BUG#14940 "MySQL choose wrong index", v.2

- Make the range-et-al optimizer produce E(#table records after table 
                                           condition is applied),
- Make the join optimizer use this value,
- Add "filtered" column to EXPLAIN EXTENDED to show 
  fraction of records left after table condition is applied
- Adjust test results, add comments


mysql-test/r/archive_gis.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/auto_increment.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/bdb_gis.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/bench_count_distinct.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/binlog_stm_blackhole.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/case.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/cast.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/compress.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ctype_collate.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ctype_cp1250_ch.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/date_formats.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/distinct.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/fulltext.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_compress.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_crypt.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_default.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_encrypt.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_gconcat.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_group.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_if.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_in.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_like.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_math.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_op.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_regexp.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_set.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_str.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_system.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_test.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/func_time.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/gis.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/group_by.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/group_min_max.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/having.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/heap.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/heap_hash.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/index_merge.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/index_merge_innodb.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/index_merge_ror.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/innodb_gis.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/insert_update.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/join.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/join_nested.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/key_diff.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/myisam.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ndb_gis.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/negation_elimination.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/null.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/olap.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/partition_pruning.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/query_cache.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/row.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/rpl_get_lock.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/rpl_master_pos_wait.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/select.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ssl.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/ssl_compress.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/subselect.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/type_blob.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/union.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/varbinary.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/variables.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/r/view.result:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/ctype_cp1250_ch.test:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/func_like.test:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/group_min_max.test:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/index_merge_ror.test:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/index_merge_ror_cpk.test:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/join.test:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
mysql-test/t/partition_pruning.test:
  BUG#14940: Adjust the test results: EXPLAIN EXTENDED now has extra "filtered" column
sql/opt_range.cc:
  BUG#14940: Make range/index_merge/group-min-max optimizer produce TABLE::quick_condition_rows -
    estimate of #records that will match the table condition.
sql/sql_class.cc:
  BUG#14940: Add "filtered" column to output of EXPLAIN EXTENDED
sql/sql_select.cc:
  BUG#14940: 
  - Make the join optimizer to use TABLE::quick_condition_rows=
    = E(#table records after filtering with table condition) 
  - Add "filtered" column to output of EXPLAIN EXTENDED
sql/sql_select.h:
  BUG#14940: Added comments
sql/table.h:
  BUG#14940: Added comments

mysql-test/r/archive_gis.result

@@ -233,8 +233,8 @@ fid	AsText(Envelope(g))
 120	POLYGON((0 0,10 0,10 10,0 10,0 0))
 121	POLYGON((3 6,44 6,44 9,3 9,3 6))
 explain extended select Dimension(g), GeometryType(g), IsEmpty(g), AsText(Envelope(g)) from gis_geometry;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_geometry	ALL	NULL	NULL	NULL	NULL	21	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_geometry	ALL	NULL	NULL	NULL	NULL	21	100.00	
 Warnings:
 Note	1003	select dimension(`test`.`gis_geometry`.`g`) AS `Dimension(g)`,geometrytype(`test`.`gis_geometry`.`g`) AS `GeometryType(g)`,isempty(`test`.`gis_geometry`.`g`) AS `IsEmpty(g)`,astext(envelope(`test`.`gis_geometry`.`g`)) AS `AsText(Envelope(g))` from `test`.`gis_geometry`
 SELECT fid, X(g) FROM gis_point ORDER by fid;
@@ -250,8 +250,8 @@ fid	Y(g)
 103	20
 104	20
 explain extended select X(g),Y(g) FROM gis_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_point	ALL	NULL	NULL	NULL	NULL	4	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_point	ALL	NULL	NULL	NULL	NULL	4	100.00	
 Warnings:
 Note	1003	select x(`test`.`gis_point`.`g`) AS `X(g)`,y(`test`.`gis_point`.`g`) AS `Y(g)` from `test`.`gis_point`
 SELECT fid, AsText(StartPoint(g)) FROM gis_line ORDER by fid;
@@ -285,8 +285,8 @@ fid	IsClosed(g)
 106	1
 107	0
 explain extended select AsText(StartPoint(g)),AsText(EndPoint(g)),GLength(g),NumPoints(g),AsText(PointN(g, 2)),IsClosed(g) FROM gis_line;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_line	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_line	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select astext(startpoint(`test`.`gis_line`.`g`)) AS `AsText(StartPoint(g))`,astext(endpoint(`test`.`gis_line`.`g`)) AS `AsText(EndPoint(g))`,glength(`test`.`gis_line`.`g`) AS `GLength(g)`,numpoints(`test`.`gis_line`.`g`) AS `NumPoints(g)`,astext(pointn(`test`.`gis_line`.`g`,2)) AS `AsText(PointN(g, 2))`,isclosed(`test`.`gis_line`.`g`) AS `IsClosed(g)` from `test`.`gis_line`
 SELECT fid, AsText(Centroid(g)) FROM gis_polygon ORDER by fid;
@@ -315,8 +315,8 @@ fid	AsText(InteriorRingN(g, 1))
 109	LINESTRING(10 10,20 10,20 20,10 20,10 10)
 110	NULL
 explain extended select AsText(Centroid(g)),Area(g),AsText(ExteriorRing(g)),NumInteriorRings(g),AsText(InteriorRingN(g, 1)) FROM gis_polygon;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_polygon	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_polygon	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select astext(centroid(`test`.`gis_polygon`.`g`)) AS `AsText(Centroid(g))`,area(`test`.`gis_polygon`.`g`) AS `Area(g)`,astext(exteriorring(`test`.`gis_polygon`.`g`)) AS `AsText(ExteriorRing(g))`,numinteriorrings(`test`.`gis_polygon`.`g`) AS `NumInteriorRings(g)`,astext(interiorringn(`test`.`gis_polygon`.`g`,1)) AS `AsText(InteriorRingN(g, 1))` from `test`.`gis_polygon`
 SELECT fid, IsClosed(g) FROM gis_multi_line ORDER by fid;
@@ -354,8 +354,8 @@ fid	NumGeometries(g)
 120	2
 121	2
 explain extended SELECT fid, NumGeometries(g) from gis_multi_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select `test`.`gis_multi_point`.`fid` AS `fid`,numgeometries(`test`.`gis_multi_point`.`g`) AS `NumGeometries(g)` from `test`.`gis_multi_point`
 SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point ORDER by fid;
@@ -382,8 +382,8 @@ fid	AsText(GeometryN(g, 1))
 120	POINT(0 0)
 121	POINT(44 6)
 explain extended SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select `test`.`gis_multi_point`.`fid` AS `fid`,astext(geometryn(`test`.`gis_multi_point`.`g`,2)) AS `AsText(GeometryN(g, 2))` from `test`.`gis_multi_point`
 SELECT g1.fid as first, g2.fid as second,
@@ -401,9 +401,9 @@ Within(g1.g, g2.g) as w, Contains(g1.g, g2.g) as c, Overlaps(g1.g, g2.g) as o,
 Equals(g1.g, g2.g) as e, Disjoint(g1.g, g2.g) as d, Touches(g1.g, g2.g) as t,
 Intersects(g1.g, g2.g) as i, Crosses(g1.g, g2.g) as r
 FROM gis_geometrycollection g1, gis_geometrycollection g2 ORDER BY first, second;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	g1	ALL	NULL	NULL	NULL	NULL	2	Using temporary; Using filesort
-1	SIMPLE	g2	ALL	NULL	NULL	NULL	NULL	2	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	g1	ALL	NULL	NULL	NULL	NULL	2	100.00	Using temporary; Using filesort
+1	SIMPLE	g2	ALL	NULL	NULL	NULL	NULL	2	100.00	
 Warnings:
 Note	1003	select `test`.`g1`.`fid` AS `first`,`test`.`g2`.`fid` AS `second`,within(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `w`,contains(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `c`,overlaps(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `o`,equals(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `e`,disjoint(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `d`,touches(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `t`,intersects(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `i`,crosses(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `r` from `test`.`gis_geometrycollection` `g1` join `test`.`gis_geometrycollection` `g2` order by `test`.`g1`.`fid`,`test`.`g2`.`fid`
 DROP TABLE gis_point, gis_line, gis_polygon, gis_multi_point, gis_multi_line, gis_multi_polygon, gis_geometrycollection, gis_geometry;

mysql-test/r/auto_increment.result

@@ -140,8 +140,8 @@ select last_insert_id();
 last_insert_id()
 255
 explain extended select last_insert_id();
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache last_insert_id() AS `last_insert_id()`
 insert into t1 set i = 254;

mysql-test/r/bdb_gis.result

@@ -233,8 +233,8 @@ fid	AsText(Envelope(g))
 120	POLYGON((0 0,10 0,10 10,0 10,0 0))
 121	POLYGON((3 6,44 6,44 9,3 9,3 6))
 explain extended select Dimension(g), GeometryType(g), IsEmpty(g), AsText(Envelope(g)) from gis_geometry;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_geometry	ALL	NULL	NULL	NULL	NULL	21	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_geometry	ALL	NULL	NULL	NULL	NULL	21	100.00	
 Warnings:
 Note	1003	select dimension(`test`.`gis_geometry`.`g`) AS `Dimension(g)`,geometrytype(`test`.`gis_geometry`.`g`) AS `GeometryType(g)`,isempty(`test`.`gis_geometry`.`g`) AS `IsEmpty(g)`,astext(envelope(`test`.`gis_geometry`.`g`)) AS `AsText(Envelope(g))` from `test`.`gis_geometry`
 SELECT fid, X(g) FROM gis_point ORDER by fid;
@@ -250,8 +250,8 @@ fid	Y(g)
 103	20
 104	20
 explain extended select X(g),Y(g) FROM gis_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_point	ALL	NULL	NULL	NULL	NULL	4	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_point	ALL	NULL	NULL	NULL	NULL	4	100.00	
 Warnings:
 Note	1003	select x(`test`.`gis_point`.`g`) AS `X(g)`,y(`test`.`gis_point`.`g`) AS `Y(g)` from `test`.`gis_point`
 SELECT fid, AsText(StartPoint(g)) FROM gis_line ORDER by fid;
@@ -285,8 +285,8 @@ fid	IsClosed(g)
 106	1
 107	0
 explain extended select AsText(StartPoint(g)),AsText(EndPoint(g)),GLength(g),NumPoints(g),AsText(PointN(g, 2)),IsClosed(g) FROM gis_line;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_line	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_line	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select astext(startpoint(`test`.`gis_line`.`g`)) AS `AsText(StartPoint(g))`,astext(endpoint(`test`.`gis_line`.`g`)) AS `AsText(EndPoint(g))`,glength(`test`.`gis_line`.`g`) AS `GLength(g)`,numpoints(`test`.`gis_line`.`g`) AS `NumPoints(g)`,astext(pointn(`test`.`gis_line`.`g`,2)) AS `AsText(PointN(g, 2))`,isclosed(`test`.`gis_line`.`g`) AS `IsClosed(g)` from `test`.`gis_line`
 SELECT fid, AsText(Centroid(g)) FROM gis_polygon ORDER by fid;
@@ -315,8 +315,8 @@ fid	AsText(InteriorRingN(g, 1))
 109	LINESTRING(10 10,20 10,20 20,10 20,10 10)
 110	NULL
 explain extended select AsText(Centroid(g)),Area(g),AsText(ExteriorRing(g)),NumInteriorRings(g),AsText(InteriorRingN(g, 1)) FROM gis_polygon;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_polygon	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_polygon	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select astext(centroid(`test`.`gis_polygon`.`g`)) AS `AsText(Centroid(g))`,area(`test`.`gis_polygon`.`g`) AS `Area(g)`,astext(exteriorring(`test`.`gis_polygon`.`g`)) AS `AsText(ExteriorRing(g))`,numinteriorrings(`test`.`gis_polygon`.`g`) AS `NumInteriorRings(g)`,astext(interiorringn(`test`.`gis_polygon`.`g`,1)) AS `AsText(InteriorRingN(g, 1))` from `test`.`gis_polygon`
 SELECT fid, IsClosed(g) FROM gis_multi_line ORDER by fid;
@@ -354,8 +354,8 @@ fid	NumGeometries(g)
 120	2
 121	2
 explain extended SELECT fid, NumGeometries(g) from gis_multi_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select `test`.`gis_multi_point`.`fid` AS `fid`,numgeometries(`test`.`gis_multi_point`.`g`) AS `NumGeometries(g)` from `test`.`gis_multi_point`
 SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point ORDER by fid;
@@ -382,8 +382,8 @@ fid	AsText(GeometryN(g, 1))
 120	POINT(0 0)
 121	POINT(44 6)
 explain extended SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select `test`.`gis_multi_point`.`fid` AS `fid`,astext(geometryn(`test`.`gis_multi_point`.`g`,2)) AS `AsText(GeometryN(g, 2))` from `test`.`gis_multi_point`
 SELECT g1.fid as first, g2.fid as second,
@@ -401,9 +401,9 @@ Within(g1.g, g2.g) as w, Contains(g1.g, g2.g) as c, Overlaps(g1.g, g2.g) as o,
 Equals(g1.g, g2.g) as e, Disjoint(g1.g, g2.g) as d, Touches(g1.g, g2.g) as t,
 Intersects(g1.g, g2.g) as i, Crosses(g1.g, g2.g) as r
 FROM gis_geometrycollection g1, gis_geometrycollection g2 ORDER BY first, second;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	g1	ALL	NULL	NULL	NULL	NULL	2	Using temporary; Using filesort
-1	SIMPLE	g2	ALL	NULL	NULL	NULL	NULL	2	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	g1	ALL	NULL	NULL	NULL	NULL	2	100.00	Using temporary; Using filesort
+1	SIMPLE	g2	ALL	NULL	NULL	NULL	NULL	2	100.00	
 Warnings:
 Note	1003	select `test`.`g1`.`fid` AS `first`,`test`.`g2`.`fid` AS `second`,within(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `w`,contains(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `c`,overlaps(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `o`,equals(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `e`,disjoint(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `d`,touches(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `t`,intersects(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `i`,crosses(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `r` from `test`.`gis_geometrycollection` `g1` join `test`.`gis_geometrycollection` `g2` order by `test`.`g1`.`fid`,`test`.`g2`.`fid`
 DROP TABLE gis_point, gis_line, gis_polygon, gis_multi_point, gis_multi_line, gis_multi_polygon, gis_geometrycollection, gis_geometry;

mysql-test/r/bench_count_distinct.result

@@ -4,8 +4,8 @@ select count(distinct n) from t1;
 count(distinct n)
 100
 explain extended select count(distinct n) from t1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	n	4	NULL	200	Using index
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	index	NULL	n	4	NULL	200	100.00	Using index
 Warnings:
 Note	1003	select count(distinct `test`.`t1`.`n`) AS `count(distinct n)` from `test`.`t1`
 drop table t1;

mysql-test/r/binlog_stm_blackhole.result

@@ -70,8 +70,8 @@ a	b
 Only MyISAM tables	support collections
 Full-text indexes	are called collections
 explain extended select * from t1 where MATCH(a,b) AGAINST ("collections");
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	fulltext	a	a	0		1	Using where
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	fulltext	a	a	0		1	100.00	Using where
 Warnings:
 Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (match `test`.`t1`.`a`,`test`.`t1`.`b` against (_latin1'collections'))
 select * from t1 where MATCH(a,b) AGAINST ("indexes");

mysql-test/r/case.result

@@ -24,8 +24,8 @@ select CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END;
 CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END
 one
 explain extended select CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select (case 1 when 1 then _latin1'one' when 2 then _latin1'two' else _latin1'more' end) AS `CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END`
 select CASE 2.0 when 1 then "one" WHEN 2.0 then "two" ELSE "more" END;
@@ -63,8 +63,8 @@ fcase	count(*)
 2	1
 3	1
 explain extended select case a when 1 then 2 when 2 then 3 else 0 end as fcase, count(*) from t1 group by fcase;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	4	Using temporary; Using filesort
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	4	100.00	Using temporary; Using filesort
 Warnings:
 Note	1003	select (case `test`.`t1`.`a` when 1 then 2 when 2 then 3 else 0 end) AS `fcase`,count(0) AS `count(*)` from `test`.`t1` group by (case `test`.`t1`.`a` when 1 then 2 when 2 then 3 else 0 end)
 select case a when 1 then "one" when 2 then "two" else "nothing" end as fcase, count(*) from t1 group by fcase;
@@ -144,8 +144,8 @@ explain extended SELECT
 COALESCE(1), COALESCE(1.0),COALESCE('a'),
 COALESCE(1,1.0), COALESCE(1,'1'),COALESCE(1.1,'1'),
 COALESCE('a' COLLATE latin1_bin,'b');
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select coalesce(1) AS `COALESCE(1)`,coalesce(1.0) AS `COALESCE(1.0)`,coalesce(_latin1'a') AS `COALESCE('a')`,coalesce(1,1.0) AS `COALESCE(1,1.0)`,coalesce(1,_latin1'1') AS `COALESCE(1,'1')`,coalesce(1.1,_latin1'1') AS `COALESCE(1.1,'1')`,coalesce((_latin1'a' collate latin1_bin),_latin1'b') AS `COALESCE('a' COLLATE latin1_bin,'b')`
 SHOW CREATE TABLE t1;

mysql-test/r/cast.result

@@ -19,8 +19,8 @@ select ~5, cast(~5 as signed);
 ~5	cast(~5 as signed)
 18446744073709551610	-6
 explain extended select ~5, cast(~5 as signed);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select ~(5) AS `~5`,cast(~(5) as signed) AS `cast(~5 as signed)`
 select cast(5 as unsigned) -6.0;

mysql-test/r/compress.result

@@ -1505,8 +1505,8 @@ select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1)
 count(*)	min(fld4)	max(fld4)	sum(fld1)	avg(fld1)	std(fld1)	variance(fld1)
 70	absentee	vest	17788966	254128.0857	3272.5940	10709871.3069
 explain extended select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>"";
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	Using where
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	100.00	Using where
 Warnings:
 Note	1003	select count(0) AS `count(*)`,min(`test`.`t2`.`fld4`) AS `min(fld4)`,max(`test`.`t2`.`fld4`) AS `max(fld4)`,sum(`test`.`t2`.`fld1`) AS `sum(fld1)`,avg(`test`.`t2`.`fld1`) AS `avg(fld1)`,std(`test`.`t2`.`fld1`) AS `std(fld1)`,variance(`test`.`t2`.`fld1`) AS `variance(fld1)` from `test`.`t2` where ((`test`.`t2`.`companynr` = 34) and (`test`.`t2`.`fld4` <> _latin1''))
 select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 group by companynr limit 3;

mysql-test/r/ctype_collate.result

@@ -516,8 +516,8 @@ SELECT charset('a'),collation('a'),coercibility('a'),'a'='A';
 charset('a')	collation('a')	coercibility('a')	'a'='A'
 latin1	latin1_swedish_ci	4	1
 explain extended SELECT charset('a'),collation('a'),coercibility('a'),'a'='A';
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select charset(_latin1'a') AS `charset('a')`,collation(_latin1'a') AS `collation('a')`,coercibility(_latin1'a') AS `coercibility('a')`,(_latin1'a' = _latin1'A') AS `'a'='A'`
 SET CHARACTER SET koi8r;

mysql-test/r/ctype_cp1250_ch.result

+drop table if exists t1;
 SHOW COLLATION LIKE 'cp1250_czech_cs';
 Collation	Charset	Id	Default	Compiled	Sortlen
 cp1250_czech_cs	cp1250	34		Yes	2

mysql-test/r/date_formats.result

@@ -434,8 +434,8 @@ NULL
 Warnings:
 Error	1411	Incorrect datetime value: '15-01-2001 12:59:59' for function str_to_time
 explain extended select makedate(1997,1), addtime("31.12.97 11.59.59.999999 PM", "1 1.1.1.000002"),subtime("31.12.97 11.59.59.999999 PM", "1 1.1.1.000002"),timediff("01.01.97 11:59:59.000001 PM","31.12.95 11:59:59.000002 PM"),cast(str_to_date("15-01-2001 12:59:59", "%d-%m-%Y %H:%i:%S") as TIME), maketime(23,11,12),microsecond("1997-12-31 23:59:59.000001");
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select makedate(1997,1) AS `makedate(1997,1)`,addtime(_latin1'31.12.97 11.59.59.999999 PM',_latin1'1 1.1.1.000002') AS `addtime("31.12.97 11.59.59.999999 PM", "1 1.1.1.000002")`,subtime(_latin1'31.12.97 11.59.59.999999 PM',_latin1'1 1.1.1.000002') AS `subtime("31.12.97 11.59.59.999999 PM", "1 1.1.1.000002")`,timediff(_latin1'01.01.97 11:59:59.000001 PM',_latin1'31.12.95 11:59:59.000002 PM') AS `timediff("01.01.97 11:59:59.000001 PM","31.12.95 11:59:59.000002 PM")`,cast(str_to_date(_latin1'15-01-2001 12:59:59',_latin1'%d-%m-%Y %H:%i:%S') as time) AS `cast(str_to_date("15-01-2001 12:59:59", "%d-%m-%Y %H:%i:%S") as TIME)`,maketime(23,11,12) AS `maketime(23,11,12)`,microsecond(_latin1'1997-12-31 23:59:59.000001') AS `microsecond("1997-12-31 23:59:59.000001")`
 create table t1 (d date);

mysql-test/r/distinct.result

@@ -175,7 +175,7 @@ explain SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	PRIMARY	NULL	NULL	NULL	4	Using temporary
 1	SIMPLE	t3	ref	a	a	5	test.t1.b	2	Using where; Using index
-1	SIMPLE	t2	index	a	a	4	NULL	4	Using where; Using index; Distinct
+1	SIMPLE	t2	index	a	a	4	NULL	5	Using where; Using index; Distinct
 SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
 a
 1
@@ -212,7 +212,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	index	NULL	PRIMARY	4	NULL	4	Using index
 explain SELECT distinct a from t3 order by a desc limit 2;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t3	index	NULL	a	5	NULL	10	Using index
+1	SIMPLE	t3	index	NULL	a	5	NULL	204	Using index
 explain SELECT distinct a,b from t3 order by a+1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	204	Using temporary; Using filesort

mysql-test/r/fulltext.result

@@ -14,8 +14,8 @@ a	b
 Only MyISAM tables	support collections
 Full-text indexes	are called collections
 explain extended select * from t1 where MATCH(a,b) AGAINST ("collections");
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	fulltext	a	a	0		1	Using where
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	fulltext	a	a	0		1	100.00	Using where
 Warnings:
 Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (match `test`.`t1`.`a`,`test`.`t1`.`b` against (_latin1'collections'))
 select * from t1 where MATCH(a,b) AGAINST ("indexes");
@@ -84,8 +84,8 @@ select * from t1 where MATCH(a,b) AGAINST("support -collections" IN BOOLEAN MODE
 a	b
 MySQL has now support	for full-text search
 explain extended select * from t1 where MATCH(a,b) AGAINST("support -collections" IN BOOLEAN MODE);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	fulltext	a	a	0		1	Using where
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	fulltext	a	a	0		1	100.00	Using where
 Warnings:
 Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (match `test`.`t1`.`a`,`test`.`t1`.`b` against (_latin1'support -collections' in boolean mode))
 select * from t1 where MATCH(a,b) AGAINST("support  collections" IN BOOLEAN MODE);

mysql-test/r/func_compress.result

@@ -8,16 +8,16 @@ select uncompress(compress(@test_compress_string));
 uncompress(compress(@test_compress_string))
 string for test compress function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 
 explain extended select uncompress(compress(@test_compress_string));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache uncompress(compress((@test_compress_string))) AS `uncompress(compress(@test_compress_string))`
 select uncompressed_length(compress(@test_compress_string))=length(@test_compress_string);
 uncompressed_length(compress(@test_compress_string))=length(@test_compress_string)
 1
 explain extended select uncompressed_length(compress(@test_compress_string))=length(@test_compress_string);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache (uncompressed_length(compress((@test_compress_string))) = length((@test_compress_string))) AS `uncompressed_length(compress(@test_compress_string))=length(@test_compress_string)`
 select uncompressed_length(compress(@test_compress_string));

mysql-test/r/func_crypt.result

@@ -88,8 +88,8 @@ select old_password(' i 	 d k f a ');
 old_password(' i 	 d k f a ')
 5c078dc54ca0fcca
 explain extended select password('idkfa '), old_password('idkfa');
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select password(_latin1'idkfa ') AS `password('idkfa ')`,old_password(_latin1'idkfa') AS `old_password('idkfa')`
 select encrypt('1234','_.');

mysql-test/r/func_default.result

@@ -5,8 +5,8 @@ select default(str), default(strnull), default(intg), default(rel) from t1;
 default(str)	default(strnull)	default(intg)	default(rel)
 def	NULL	10	3.14
 explain extended select default(str), default(strnull), default(intg), default(rel) from t1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	100.00	
 Warnings:
 Note	1003	select default(`test`.`t1`.`str`) AS `default(str)`,default(`test`.`t1`.`strnull`) AS `default(strnull)`,default(`test`.`t1`.`intg`) AS `default(intg)`,default(`test`.`t1`.`rel`) AS `default(rel)` from `test`.`t1`
 select * from t1 where str <> default(str);

mysql-test/r/func_encrypt.result

@@ -179,7 +179,7 @@ NULL
 Warnings:
 Error	1108	Incorrect parameters to procedure 'des_decrypt'
 explain extended select des_decrypt(des_encrypt("hello",4),'password2'), des_decrypt(des_encrypt("hello","hidden"));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	in_rows	rows	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select des_decrypt(des_encrypt(_latin1'hello',4),_latin1'password2') AS `des_decrypt(des_encrypt("hello",4),'password2')`,des_decrypt(des_encrypt(_latin1'hello',_latin1'hidden')) AS `des_decrypt(des_encrypt("hello","hidden"))`

mysql-test/r/func_gconcat.result

@@ -15,8 +15,8 @@ grp	group_concat(c)
 2	b,c
 3	E,C,D,d,d,D
 explain extended select grp,group_concat(c) from t1 group by grp;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	9	Using filesort
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	9	100.00	Using filesort
 Warnings:
 Note	1003	select `test`.`t1`.`grp` AS `grp`,group_concat(`test`.`t1`.`c` separator ',') AS `group_concat(c)` from `test`.`t1` group by `test`.`t1`.`grp`
 select grp,group_concat(a,c) from t1 group by grp;
@@ -90,8 +90,8 @@ grp	group_concat(distinct c order by c desc)
 2	c,b
 3	E,D,C
 explain extended select grp,group_concat(distinct c order by c desc) from t1 group by grp;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	9	Using filesort
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	9	100.00	Using filesort
 Warnings:
 Note	1003	select `test`.`t1`.`grp` AS `grp`,group_concat(distinct `test`.`t1`.`c` order by `test`.`t1`.`c` DESC separator ',') AS `group_concat(distinct c order by c desc)` from `test`.`t1` group by `test`.`t1`.`grp`
 select grp,group_concat(c order by c separator ",") from t1 group by grp;
@@ -110,8 +110,8 @@ grp	group_concat(distinct c order by c separator ",")
 2	b,c
 3	C,D,E
 explain extended select grp,group_concat(distinct c order by c separator ",") from t1 group by grp;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	9	Using filesort
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	9	100.00	Using filesort
 Warnings:
 Note	1003	select `test`.`t1`.`grp` AS `grp`,group_concat(distinct `test`.`t1`.`c` order by `test`.`t1`.`c` ASC separator ',') AS `group_concat(distinct c order by c separator ",")` from `test`.`t1` group by `test`.`t1`.`grp`
 select grp,group_concat(distinct c order by c desc separator ",") from t1 group by grp;

mysql-test/r/func_group.result

@@ -287,8 +287,8 @@ a	count(b)	sum(b)	avg(b)	std(b)	min(b)	max(b)	bit_and(b)	bit_or(b)	bit_xor(b)
 2	1	1	1.00000	0.00000	1	1	1	1	1
 3	1	1	1.00000	0.00000	1	1	1	1	1
 explain extended select SQL_BIG_RESULT a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b), bit_xor(b) from t1 group by a;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	Using filesort
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	100.00	Using filesort
 Warnings:
 Note	1003	select sql_big_result `test`.`t1`.`a` AS `a`,count(`test`.`t1`.`b`) AS `count(b)`,sum(`test`.`t1`.`b`) AS `sum(b)`,avg(`test`.`t1`.`b`) AS `avg(b)`,std(`test`.`t1`.`b`) AS `std(b)`,min(`test`.`t1`.`b`) AS `min(b)`,max(`test`.`t1`.`b`) AS `max(b)`,bit_and(`test`.`t1`.`b`) AS `bit_and(b)`,bit_or(`test`.`t1`.`b`) AS `bit_or(b)`,bit_xor(`test`.`t1`.`b`) AS `bit_xor(b)` from `test`.`t1` group by `test`.`t1`.`a`
 drop table t1;

mysql-test/r/func_if.result

@@ -40,8 +40,8 @@ a
 aa
 aaa
 explain extended select if(u=1,st,binary st) s from t1 where st like "%a%" order by s;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	7	Using where; Using filesort
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where; Using filesort
 Warnings:
 Note	1003	select if((`test`.`t1`.`u` = 1),`test`.`t1`.`st`,cast(`test`.`t1`.`st` as char charset binary)) AS `s` from `test`.`t1` where (`test`.`t1`.`st` like _latin1'%a%') order by if((`test`.`t1`.`u` = 1),`test`.`t1`.`st`,cast(`test`.`t1`.`st` as char charset binary))
 select nullif(u, 1) from t1;
@@ -54,8 +54,8 @@ NULL
 0
 0
 explain extended select nullif(u, 1) from t1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	7	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	7	100.00	
 Warnings:
 Note	1003	select nullif(`test`.`t1`.`u`,1) AS `nullif(u, 1)` from `test`.`t1`
 drop table t1;

mysql-test/r/func_in.result

@@ -143,8 +143,8 @@ select * from t1 where 'a' in (a,b,c collate latin1_bin);
 a	b	c
 a	c	c
 explain extended select * from t1 where 'a' in (a,b,c collate latin1_bin);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	Using where
 Warnings:
 Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where (_latin1'a' in (`test`.`t1`.`a`,`test`.`t1`.`b`,(`test`.`t1`.`c` collate latin1_bin)))
 drop table t1;

mysql-test/r/func_like.result

 drop table if exists t1;
 create table t1 (a varchar(10), key(a));
 insert into t1 values ("a"),("abc"),("abcd"),("hello"),("test");
-explain select * from t1 where a like 'abc%';
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	a	a	13	NULL	5	Using where; Using index
-explain select * from t1 where a like concat('abc','%');
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	a	a	13	NULL	5	Using where; Using index
+explain extended select * from t1 where a like 'abc%';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	index	a	a	13	NULL	5	20.00	Using where; Using index
+Warnings:
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` like _latin1'abc%')
+explain extended select * from t1 where a like concat('abc','%');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	index	a	a	13	NULL	5	20.00	Using where; Using index
+Warnings:
+Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` like concat(_latin1'abc',_latin1'%'))
 select * from t1 where a like "abc%";
 a
 abc

mysql-test/r/func_math.result

@@ -3,32 +3,32 @@ select floor(5.5),floor(-5.5);
 floor(5.5)	floor(-5.5)
 5	-6
 explain extended select floor(5.5),floor(-5.5);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select floor(5.5) AS `floor(5.5)`,floor(-(5.5)) AS `floor(-5.5)`
 select ceiling(5.5),ceiling(-5.5);
 ceiling(5.5)	ceiling(-5.5)
 6	-5
 explain extended select ceiling(5.5),ceiling(-5.5);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select ceiling(5.5) AS `ceiling(5.5)`,ceiling(-(5.5)) AS `ceiling(-5.5)`
 select truncate(52.64,1),truncate(52.64,2),truncate(52.64,-1),truncate(52.64,-2), truncate(-52.64,1),truncate(-52.64,-1);
 truncate(52.64,1)	truncate(52.64,2)	truncate(52.64,-1)	truncate(52.64,-2)	truncate(-52.64,1)	truncate(-52.64,-1)
 52.6	52.64	50	0	-52.6	-50
 explain extended select truncate(52.64,1),truncate(52.64,2),truncate(52.64,-1),truncate(52.64,-2), truncate(-52.64,1),truncate(-52.64,-1);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select truncate(52.64,1) AS `truncate(52.64,1)`,truncate(52.64,2) AS `truncate(52.64,2)`,truncate(52.64,-(1)) AS `truncate(52.64,-1)`,truncate(52.64,-(2)) AS `truncate(52.64,-2)`,truncate(-(52.64),1) AS `truncate(-52.64,1)`,truncate(-(52.64),-(1)) AS `truncate(-52.64,-1)`
 select round(5.5),round(-5.5);
 round(5.5)	round(-5.5)
 6	-6
 explain extended select round(5.5),round(-5.5);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select round(5.5,0) AS `round(5.5)`,round(-(5.5),0) AS `round(-5.5)`
 select round(5.64,1),round(5.64,2),round(5.64,-1),round(5.64,-2);
@@ -38,48 +38,48 @@ select abs(-10), sign(-5), sign(5), sign(0);
 abs(-10)	sign(-5)	sign(5)	sign(0)
 10	-1	1	0
 explain extended select abs(-10), sign(-5), sign(5), sign(0);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select abs(-(10)) AS `abs(-10)`,sign(-(5)) AS `sign(-5)`,sign(5) AS `sign(5)`,sign(0) AS `sign(0)`
 select log(exp(10)),exp(log(sqrt(10))*2),log(-1),log(NULL),log(1,1),log(3,9),log(-1,2),log(NULL,2);
 log(exp(10))	exp(log(sqrt(10))*2)	log(-1)	log(NULL)	log(1,1)	log(3,9)	log(-1,2)	log(NULL,2)
 10	10	NULL	NULL	NULL	2	NULL	NULL
 explain extended select log(exp(10)),exp(log(sqrt(10))*2),log(-1),log(NULL),log(1,1),log(3,9),log(-1,2),log(NULL,2);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select log(exp(10)) AS `log(exp(10))`,exp((log(sqrt(10)) * 2)) AS `exp(log(sqrt(10))*2)`,log(-(1)) AS `log(-1)`,log(NULL) AS `log(NULL)`,log(1,1) AS `log(1,1)`,log(3,9) AS `log(3,9)`,log(-(1),2) AS `log(-1,2)`,log(NULL,2) AS `log(NULL,2)`
 select ln(exp(10)),exp(ln(sqrt(10))*2),ln(-1),ln(0),ln(NULL);
 ln(exp(10))	exp(ln(sqrt(10))*2)	ln(-1)	ln(0)	ln(NULL)
 10	10	NULL	NULL	NULL
 explain extended select ln(exp(10)),exp(ln(sqrt(10))*2),ln(-1),ln(0),ln(NULL);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select ln(exp(10)) AS `ln(exp(10))`,exp((ln(sqrt(10)) * 2)) AS `exp(ln(sqrt(10))*2)`,ln(-(1)) AS `ln(-1)`,ln(0) AS `ln(0)`,ln(NULL) AS `ln(NULL)`
 select log2(8),log2(15),log2(-2),log2(0),log2(NULL);
 log2(8)	log2(15)	log2(-2)	log2(0)	log2(NULL)
 3	3.9068905956085	NULL	NULL	NULL
 explain extended select log2(8),log2(15),log2(-2),log2(0),log2(NULL);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select log2(8) AS `log2(8)`,log2(15) AS `log2(15)`,log2(-(2)) AS `log2(-2)`,log2(0) AS `log2(0)`,log2(NULL) AS `log2(NULL)`
 select log10(100),log10(18),log10(-4),log10(0),log10(NULL);
 log10(100)	log10(18)	log10(-4)	log10(0)	log10(NULL)
 2	1.2552725051033	NULL	NULL	NULL
 explain extended select log10(100),log10(18),log10(-4),log10(0),log10(NULL);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select log10(100) AS `log10(100)`,log10(18) AS `log10(18)`,log10(-(4)) AS `log10(-4)`,log10(0) AS `log10(0)`,log10(NULL) AS `log10(NULL)`
 select pow(10,log10(10)),power(2,4);
 pow(10,log10(10))	power(2,4)
 10	16
 explain extended select pow(10,log10(10)),power(2,4);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select pow(10,log10(10)) AS `pow(10,log10(10))`,pow(2,4) AS `power(2,4)`
 set @@rand_seed1=10000000,@@rand_seed2=1000000;
@@ -87,16 +87,16 @@ select rand(999999),rand();
 rand(999999)	rand()
 0.014231365187309	0.028870999839968
 explain extended select rand(999999),rand();
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache rand(999999) AS `rand(999999)`,rand() AS `rand()`
 select pi(),format(sin(pi()/2),6),format(cos(pi()/2),6),format(abs(tan(pi())),6),format(cot(1),6),format(asin(1),6),format(acos(0),6),format(atan(1),6);
 pi()	format(sin(pi()/2),6)	format(cos(pi()/2),6)	format(abs(tan(pi())),6)	format(cot(1),6)	format(asin(1),6)	format(acos(0),6)	format(atan(1),6)
 3.141593	1.000000	0.000000	0.000000	0.642093	1.570796	1.570796	0.785398
 explain extended select pi(),format(sin(pi()/2),6),format(cos(pi()/2),6),format(abs(tan(pi())),6),format(cot(1),6),format(asin(1),6),format(acos(0),6),format(atan(1),6);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select pi() AS `pi()`,format(sin((pi() / 2)),6) AS `format(sin(pi()/2),6)`,format(cos((pi() / 2)),6) AS `format(cos(pi()/2),6)`,format(abs(tan(pi())),6) AS `format(abs(tan(pi())),6)`,format((1 / tan(1)),6) AS `format(cot(1),6)`,format(asin(1),6) AS `format(asin(1),6)`,format(acos(0),6) AS `format(acos(0),6)`,format(atan(1),6) AS `format(atan(1),6)`
 select degrees(pi()),radians(360);
@@ -124,8 +124,8 @@ select format(4.55, 1), format(4.551, 1);
 format(4.55, 1)	format(4.551, 1)
 4.6	4.6
 explain extended select degrees(pi()),radians(360);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select degrees(pi()) AS `degrees(pi())`,radians(360) AS `radians(360)`
 select rand(rand);

mysql-test/r/func_op.result

@@ -2,16 +2,16 @@ select 1+1,1-1,1+1*2,8/5,8%5,mod(8,5),mod(8,5)|0,-(1+1)*-2;
 1+1	1-1	1+1*2	8/5	8%5	mod(8,5)	mod(8,5)|0	-(1+1)*-2
 2	0	3	1.6000	3	3	3	4
 explain extended select 1+1,1-1,1+1*2,8/5,8%5,mod(8,5),mod(8,5)|0,-(1+1)*-2;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select (1 + 1) AS `1+1`,(1 - 1) AS `1-1`,(1 + (1 * 2)) AS `1+1*2`,(8 / 5) AS `8/5`,(8 % 5) AS `8%5`,(8 % 5) AS `mod(8,5)`,((8 % 5) | 0) AS `mod(8,5)|0`,(-((1 + 1)) * -(2)) AS `-(1+1)*-2`
 select 1 | (1+1),5 & 3,bit_count(7) ;
 1 | (1+1)	5 & 3	bit_count(7)
 3	1	3
 explain extended select 1 | (1+1),5 & 3,bit_count(7) ;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select (1 | (1 + 1)) AS `1 | (1+1)`,(5 & 3) AS `5 & 3`,bit_count(7) AS `bit_count(7)`
 select 1 << 32,1 << 63, 1 << 64, 4 >> 2, 4 >> 63, 1<< 63 >> 60;

mysql-test/r/func_regexp.result

@@ -37,8 +37,8 @@ select * from t1 where xxx regexp('is a test of some long text to');
 xxx
 this is a test of some long text to see what happens
 explain extended select * from t1 where xxx regexp('is a test of some long text to');
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	100.00	
 Warnings:
 Note	1003	select `test`.`t1`.`xxx` AS `xxx` from `test`.`t1` where (`test`.`t1`.`xxx` regexp _latin1'is a test of some long text to')
 select * from t1 where xxx regexp('is a test of some long text to ');

mysql-test/r/func_set.result

@@ -2,8 +2,8 @@ select interval(55,10,20,30,40,50,60,70,80,90,100),interval(3,1,1+1,1+1+1+1),fie
 interval(55,10,20,30,40,50,60,70,80,90,100)	interval(3,1,1+1,1+1+1+1)	field("IBM","NCA","ICL","SUN","IBM","DIGITAL")	field("A","B","C")	elt(2,"ONE","TWO","THREE")	interval(0,1,2,3,4)	elt(1,1,2,3)|0	elt(1,1.1,1.2,1.3)+0
 5	2	4	0	TWO	0	1	1.1
 explain extended select INTERVAL(55,10,20,30,40,50,60,70,80,90,100),interval(3,1,1+1,1+1+1+1),field("IBM","NCA","ICL","SUN","IBM","DIGITAL"),field("A","B","C"),elt(2,"ONE","TWO","THREE"),interval(0,1,2,3,4),elt(1,1,2,3)|0,elt(1,1.1,1.2,1.3)+0;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select interval((55,10,20,30,40,50,60,70,80,90,100)) AS `INTERVAL(55,10,20,30,40,50,60,70,80,90,100)`,interval((3,1,(1 + 1),(((1 + 1) + 1) + 1))) AS `interval(3,1,1+1,1+1+1+1)`,field(_latin1'IBM',_latin1'NCA',_latin1'ICL',_latin1'SUN',_latin1'IBM',_latin1'DIGITAL') AS `field("IBM","NCA","ICL","SUN","IBM","DIGITAL")`,field(_latin1'A',_latin1'B',_latin1'C') AS `field("A","B","C")`,elt(2,_latin1'ONE',_latin1'TWO',_latin1'THREE') AS `elt(2,"ONE","TWO","THREE")`,interval((0,1,2,3,4)) AS `interval(0,1,2,3,4)`,(elt(1,1,2,3) | 0) AS `elt(1,1,2,3)|0`,(elt(1,1.1,1.2,1.3) + 0) AS `elt(1,1.1,1.2,1.3)+0`
 SELECT INTERVAL(13, 7, 14, 21, 28, 35, 42, 49, 56);

mysql-test/r/func_str.result

@@ -811,8 +811,8 @@ select substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2),substring_index("1abcd
 substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2)	substring_index("1abcd;2abcd;3abcd;4abcd", ';', -2)
 1abcd;2abcd	3abcd;4abcd
 explain extended select md5('hello'), sha('abc'), sha1('abc'), soundex(''), 'mood' sounds like 'mud', aes_decrypt(aes_encrypt('abc','1'),'1'),concat('*',space(5),'*'), reverse('abc'), rpad('a',4,'1'), lpad('a',4,'1'),  concat_ws(',','',NULL,'a'),make_set(255,_latin2'a',_latin2'b',_latin2'c'),elt(2,1),locate("a","b",2),format(130,10),char(0),conv(130,16,10),hex(130),binary 'HE', export_set(255,_latin2'y',_latin2'n',_latin2' '),FIELD('b' COLLATE latin1_bin,'A','B'),FIND_IN_SET(_latin1'B',_latin1'a,b,c,d'),collation(conv(130,16,10)), coercibility(conv(130,16,10)),length('\n\t\r\b\0\_\%\\'),bit_length('\n\t\r\b\0\_\%\\'),bit_length('\n\t\r\b\0\_\%\\'),concat('monty',' was here ','again'),length('hello'),char(ascii('h')),ord('h'),quote(1/0),crc32("123"),replace('aaaa','a','b'),insert('txs',2,1,'hi'),left(_latin2'a',1),right(_latin2'a',1),lcase(_latin2'a'),ucase(_latin2'a'),SUBSTR('abcdefg',3,2),substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2),trim(_latin2' a '),ltrim(_latin2' a '),rtrim(_latin2' a '), decode(encode(repeat("a",100000),"monty"),"monty");
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select md5(_latin1'hello') AS `md5('hello')`,sha(_latin1'abc') AS `sha('abc')`,sha(_latin1'abc') AS `sha1('abc')`,soundex(_latin1'') AS `soundex('')`,(soundex(_latin1'mood') = soundex(_latin1'mud')) AS `'mood' sounds like 'mud'`,aes_decrypt(aes_encrypt(_latin1'abc',_latin1'1'),_latin1'1') AS `aes_decrypt(aes_encrypt('abc','1'),'1')`,concat(_latin1'*',repeat(_latin1' ',5),_latin1'*') AS `concat('*',space(5),'*')`,reverse(_latin1'abc') AS `reverse('abc')`,rpad(_latin1'a',4,_latin1'1') AS `rpad('a',4,'1')`,lpad(_latin1'a',4,_latin1'1') AS `lpad('a',4,'1')`,concat_ws(_latin1',',_latin1'',NULL,_latin1'a') AS `concat_ws(',','',NULL,'a')`,make_set(255,_latin2'a',_latin2'b',_latin2'c') AS `make_set(255,_latin2'a',_latin2'b',_latin2'c')`,elt(2,1) AS `elt(2,1)`,locate(_latin1'a',_latin1'b',2) AS `locate("a","b",2)`,format(130,10) AS `format(130,10)`,char(0) AS `char(0)`,conv(130,16,10) AS `conv(130,16,10)`,hex(130) AS `hex(130)`,cast(_latin1'HE' as char charset binary) AS `binary 'HE'`,export_set(255,_latin2'y',_latin2'n',_latin2' ') AS `export_set(255,_latin2'y',_latin2'n',_latin2' ')`,field((_latin1'b' collate latin1_bin),_latin1'A',_latin1'B') AS `FIELD('b' COLLATE latin1_bin,'A','B')`,find_in_set(_latin1'B',_latin1'a,b,c,d') AS `FIND_IN_SET(_latin1'B',_latin1'a,b,c,d')`,collation(conv(130,16,10)) AS `collation(conv(130,16,10))`,coercibility(conv(130,16,10)) AS `coercibility(conv(130,16,10))`,length(_latin1'\n	\r\0\\_\\%\\') AS `length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n	\r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n	\r\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,concat(_latin1'monty',_latin1' was here ',_latin1'again') AS `concat('monty',' was here ','again')`,length(_latin1'hello') AS `length('hello')`,char(ascii(_latin1'h')) AS `char(ascii('h'))`,ord(_latin1'h') AS `ord('h')`,quote((1 / 0)) AS `quote(1/0)`,crc32(_latin1'123') AS `crc32("123")`,replace(_latin1'aaaa',_latin1'a',_latin1'b') AS `replace('aaaa','a','b')`,insert(_latin1'txs',2,1,_latin1'hi') AS `insert('txs',2,1,'hi')`,left(_latin2'a',1) AS `left(_latin2'a',1)`,right(_latin2'a',1) AS `right(_latin2'a',1)`,lcase(_latin2'a') AS `lcase(_latin2'a')`,ucase(_latin2'a') AS `ucase(_latin2'a')`,substr(_latin1'abcdefg',3,2) AS `SUBSTR('abcdefg',3,2)`,substring_index(_latin1'1abcd;2abcd;3abcd;4abcd',_latin1';',2) AS `substring_index("1abcd;2abcd;3abcd;4abcd", ';', 2)`,trim(_latin2' a ') AS `trim(_latin2' a ')`,ltrim(_latin2' a ') AS `ltrim(_latin2' a ')`,rtrim(_latin2' a ') AS `rtrim(_latin2' a ')`,decode(encode(repeat(_latin1'a',100000))) AS `decode(encode(repeat("a",100000),"monty"),"monty")`
 SELECT lpad(12345, 5, "#");

mysql-test/r/func_system.result

@@ -38,8 +38,8 @@ select charset(version());
 charset(version())
 utf8
 explain extended select database(), user();
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache database() AS `database()`,user() AS `user()`
 create table t1 (version char(60)) select database(), user(), version() as 'version';

mysql-test/r/func_test.result

@@ -45,8 +45,8 @@ select 3 ^ 11, 1 ^ 1, 1 ^ 0, 1 ^ NULL, NULL ^ 1;
 3 ^ 11	1 ^ 1	1 ^ 0	1 ^ NULL	NULL ^ 1
 8	0	1	NULL	NULL
 explain extended select 3 ^ 11, 1 ^ 1, 1 ^ 0, 1 ^ NULL, NULL ^ 1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select (3 ^ 11) AS `3 ^ 11`,(1 ^ 1) AS `1 ^ 1`,(1 ^ 0) AS `1 ^ 0`,(1 ^ NULL) AS `1 ^ NULL`,(NULL ^ 1) AS `NULL ^ 1`
 select 1 XOR 1, 1 XOR 0, 0 XOR 1, 0 XOR 0, NULL XOR 1, 1 XOR NULL, 0 XOR NULL;
@@ -59,16 +59,16 @@ select 10 % 7, 10 mod 7, 10 div 3;
 10 % 7	10 mod 7	10 div 3
 3	3	3
 explain extended select 10 % 7, 10 mod 7, 10 div 3;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select (10 % 7) AS `10 % 7`,(10 % 7) AS `10 mod 7`,(10 DIV 3) AS `10 div 3`
 select (1 << 64)-1, ((1 << 64)-1) DIV 1, ((1 << 64)-1) DIV 2;
 (1 << 64)-1	((1 << 64)-1) DIV 1	((1 << 64)-1) DIV 2
 18446744073709551615	18446744073709551615	9223372036854775807
 explain extended select (1 << 64)-1, ((1 << 64)-1) DIV 1, ((1 << 64)-1) DIV 2;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select ((1 << 64) - 1) AS `(1 << 64)-1`,(((1 << 64) - 1) DIV 1) AS `((1 << 64)-1) DIV 1`,(((1 << 64) - 1) DIV 2) AS `((1 << 64)-1) DIV 2`
 create table t1 (a int);
@@ -76,16 +76,16 @@ insert t1 values (1);
 select * from t1 where 1 xor 1;
 a
 explain extended select * from t1 where 1 xor 1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 Warnings:
 Note	1003	select `test`.`t1`.`a` AS `a` from `test`.`t1`
 select - a from t1;
 - a
 -1
 explain extended select - a from t1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	100.00	
 Warnings:
 Note	1003	select -(`test`.`t1`.`a`) AS `- a` from `test`.`t1`
 drop table t1;
@@ -105,8 +105,8 @@ select _koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci;
 _koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci
 1
 explain extended select _koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select (_koi8r'a' = (_koi8r'A' collate koi8r_general_ci)) AS `_koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci`
 select _koi8r'a' = _koi8r'A' COLLATE koi8r_bin;

mysql-test/r/func_time.result

@@ -719,8 +719,8 @@ select strcmp(concat(utc_date(),' ',utc_time()),utc_timestamp())=0;
 strcmp(concat(utc_date(),' ',utc_time()),utc_timestamp())=0
 1
 explain extended select period_add("9602",-12),period_diff(199505,"9404"),from_days(to_days("960101")),dayofmonth("1997-01-02"), month("1997-01-02"), monthname("1972-03-04"),dayofyear("0000-00-00"),HOUR("1997-03-03 23:03:22"),MINUTE("23:03:22"),SECOND(230322),QUARTER(980303),WEEK("1998-03-03"),yearweek("2000-01-01",1),week(19950101,1),year("98-02-03"),weekday(curdate())-weekday(now()),dayname("1962-03-03"),unix_timestamp(),sec_to_time(time_to_sec("0:30:47")/6.21),curtime(),utc_time(),curdate(),utc_date(),utc_timestamp(),date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w"),from_unixtime(unix_timestamp("1994-03-02 10:11:12")),"1997-12-31 23:59:59" + INTERVAL 1 SECOND,"1998-01-01 00:00:00" - INTERVAL 1 SECOND,INTERVAL 1 DAY + "1997-12-31", extract(YEAR FROM "1999-01-02 10:11:12"),date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache period_add(_latin1'9602',-(12)) AS `period_add("9602",-12)`,period_diff(199505,_latin1'9404') AS `period_diff(199505,"9404")`,from_days(to_days(_latin1'960101')) AS `from_days(to_days("960101"))`,dayofmonth(_latin1'1997-01-02') AS `dayofmonth("1997-01-02")`,month(_latin1'1997-01-02') AS `month("1997-01-02")`,monthname(_latin1'1972-03-04') AS `monthname("1972-03-04")`,dayofyear(_latin1'0000-00-00') AS `dayofyear("0000-00-00")`,hour(_latin1'1997-03-03 23:03:22') AS `HOUR("1997-03-03 23:03:22")`,minute(_latin1'23:03:22') AS `MINUTE("23:03:22")`,second(230322) AS `SECOND(230322)`,quarter(980303) AS `QUARTER(980303)`,week(_latin1'1998-03-03',0) AS `WEEK("1998-03-03")`,yearweek(_latin1'2000-01-01',1) AS `yearweek("2000-01-01",1)`,week(19950101,1) AS `week(19950101,1)`,year(_latin1'98-02-03') AS `year("98-02-03")`,(weekday(curdate()) - weekday(now())) AS `weekday(curdate())-weekday(now())`,dayname(_latin1'1962-03-03') AS `dayname("1962-03-03")`,unix_timestamp() AS `unix_timestamp()`,sec_to_time((time_to_sec(_latin1'0:30:47') / 6.21)) AS `sec_to_time(time_to_sec("0:30:47")/6.21)`,curtime() AS `curtime()`,utc_time() AS `utc_time()`,curdate() AS `curdate()`,utc_date() AS `utc_date()`,utc_timestamp() AS `utc_timestamp()`,date_format(_latin1'1997-01-02 03:04:05',_latin1'%M %W %D %Y %y %m %d %h %i %s %w') AS `date_format("1997-01-02 03:04:05", "%M %W %D %Y %y %m %d %h %i %s %w")`,from_unixtime(unix_timestamp(_latin1'1994-03-02 10:11:12')) AS `from_unixtime(unix_timestamp("1994-03-02 10:11:12"))`,(_latin1'1997-12-31 23:59:59' + interval 1 second) AS `"1997-12-31 23:59:59" + INTERVAL 1 SECOND`,(_latin1'1998-01-01 00:00:00' - interval 1 second) AS `"1998-01-01 00:00:00" - INTERVAL 1 SECOND`,(_latin1'1997-12-31' + interval 1 day) AS `INTERVAL 1 DAY + "1997-12-31"`,extract(year from _latin1'1999-01-02 10:11:12') AS `extract(YEAR FROM "1999-01-02 10:11:12")`,(_latin1'1997-12-31 23:59:59' + interval 1 second) AS `date_add("1997-12-31 23:59:59",INTERVAL 1 SECOND)`
 SET @TMP=NOW();
@@ -808,8 +808,8 @@ drop table t1;
 End of 4.1 tests
 explain extended select timestampdiff(SQL_TSI_WEEK, '2001-02-01', '2001-05-01') as a1,
 timestampdiff(SQL_TSI_FRAC_SECOND, '2001-02-01 12:59:59.120000', '2001-05-01 12:58:58.119999') as a2;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select timestampdiff(WEEK,_latin1'2001-02-01',_latin1'2001-05-01') AS `a1`,timestampdiff(SECOND_FRAC,_latin1'2001-02-01 12:59:59.120000',_latin1'2001-05-01 12:58:58.119999') AS `a2`
 select time_format('100:00:00', '%H %k %h %I %l');

mysql-test/r/gis.result

@@ -225,8 +225,8 @@ fid	AsText(Envelope(g))
 120	POLYGON((0 0,10 0,10 10,0 10,0 0))
 121	POLYGON((3 6,44 6,44 9,3 9,3 6))
 explain extended select Dimension(g), GeometryType(g), IsEmpty(g), AsText(Envelope(g)) from gis_geometry;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_geometry	ALL	NULL	NULL	NULL	NULL	21	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_geometry	ALL	NULL	NULL	NULL	NULL	21	100.00	
 Warnings:
 Note	1003	select dimension(`test`.`gis_geometry`.`g`) AS `Dimension(g)`,geometrytype(`test`.`gis_geometry`.`g`) AS `GeometryType(g)`,isempty(`test`.`gis_geometry`.`g`) AS `IsEmpty(g)`,astext(envelope(`test`.`gis_geometry`.`g`)) AS `AsText(Envelope(g))` from `test`.`gis_geometry`
 SELECT fid, X(g) FROM gis_point;
@@ -242,8 +242,8 @@ fid	Y(g)
 103	20
 104	20
 explain extended select X(g),Y(g) FROM gis_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_point	ALL	NULL	NULL	NULL	NULL	4	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_point	ALL	NULL	NULL	NULL	NULL	4	100.00	
 Warnings:
 Note	1003	select x(`test`.`gis_point`.`g`) AS `X(g)`,y(`test`.`gis_point`.`g`) AS `Y(g)` from `test`.`gis_point`
 SELECT fid, AsText(StartPoint(g)) FROM gis_line;
@@ -277,8 +277,8 @@ fid	IsClosed(g)
 106	1
 107	0
 explain extended select AsText(StartPoint(g)),AsText(EndPoint(g)),GLength(g),NumPoints(g),AsText(PointN(g, 2)),IsClosed(g) FROM gis_line;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_line	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_line	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select astext(startpoint(`test`.`gis_line`.`g`)) AS `AsText(StartPoint(g))`,astext(endpoint(`test`.`gis_line`.`g`)) AS `AsText(EndPoint(g))`,glength(`test`.`gis_line`.`g`) AS `GLength(g)`,numpoints(`test`.`gis_line`.`g`) AS `NumPoints(g)`,astext(pointn(`test`.`gis_line`.`g`,2)) AS `AsText(PointN(g, 2))`,isclosed(`test`.`gis_line`.`g`) AS `IsClosed(g)` from `test`.`gis_line`
 SELECT fid, AsText(Centroid(g)) FROM gis_polygon;
@@ -307,8 +307,8 @@ fid	AsText(InteriorRingN(g, 1))
 109	LINESTRING(10 10,20 10,20 20,10 20,10 10)
 110	NULL
 explain extended select AsText(Centroid(g)),Area(g),AsText(ExteriorRing(g)),NumInteriorRings(g),AsText(InteriorRingN(g, 1)) FROM gis_polygon;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_polygon	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_polygon	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select astext(centroid(`test`.`gis_polygon`.`g`)) AS `AsText(Centroid(g))`,area(`test`.`gis_polygon`.`g`) AS `Area(g)`,astext(exteriorring(`test`.`gis_polygon`.`g`)) AS `AsText(ExteriorRing(g))`,numinteriorrings(`test`.`gis_polygon`.`g`) AS `NumInteriorRings(g)`,astext(interiorringn(`test`.`gis_polygon`.`g`,1)) AS `AsText(InteriorRingN(g, 1))` from `test`.`gis_polygon`
 SELECT fid, IsClosed(g) FROM gis_multi_line;
@@ -346,8 +346,8 @@ fid	NumGeometries(g)
 120	2
 121	2
 explain extended SELECT fid, NumGeometries(g) from gis_multi_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select `test`.`gis_multi_point`.`fid` AS `fid`,numgeometries(`test`.`gis_multi_point`.`g`) AS `NumGeometries(g)` from `test`.`gis_multi_point`
 SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point;
@@ -374,8 +374,8 @@ fid	AsText(GeometryN(g, 1))
 120	POINT(0 0)
 121	POINT(44 6)
 explain extended SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select `test`.`gis_multi_point`.`fid` AS `fid`,astext(geometryn(`test`.`gis_multi_point`.`g`,2)) AS `AsText(GeometryN(g, 2))` from `test`.`gis_multi_point`
 SELECT g1.fid as first, g2.fid as second,
@@ -393,9 +393,9 @@ Within(g1.g, g2.g) as w, Contains(g1.g, g2.g) as c, Overlaps(g1.g, g2.g) as o,
 Equals(g1.g, g2.g) as e, Disjoint(g1.g, g2.g) as d, Touches(g1.g, g2.g) as t,
 Intersects(g1.g, g2.g) as i, Crosses(g1.g, g2.g) as r
 FROM gis_geometrycollection g1, gis_geometrycollection g2 ORDER BY first, second;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	g1	ALL	NULL	NULL	NULL	NULL	2	Using temporary; Using filesort
-1	SIMPLE	g2	ALL	NULL	NULL	NULL	NULL	2	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	g1	ALL	NULL	NULL	NULL	NULL	2	100.00	Using temporary; Using filesort
+1	SIMPLE	g2	ALL	NULL	NULL	NULL	NULL	2	100.00	
 Warnings:
 Note	1003	select `test`.`g1`.`fid` AS `first`,`test`.`g2`.`fid` AS `second`,within(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `w`,contains(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `c`,overlaps(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `o`,equals(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `e`,disjoint(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `d`,touches(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `t`,intersects(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `i`,crosses(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `r` from `test`.`gis_geometrycollection` `g1` join `test`.`gis_geometrycollection` `g2` order by `test`.`g1`.`fid`,`test`.`g2`.`fid`
 DROP TABLE gis_point, gis_line, gis_polygon, gis_multi_point, gis_multi_line, gis_multi_polygon, gis_geometrycollection, gis_geometry;
@@ -436,26 +436,26 @@ SELECT AsText(GeometryFromWKB(AsWKB(GeometryFromText('POINT(1 4)'))));
 AsText(GeometryFromWKB(AsWKB(GeometryFromText('POINT(1 4)'))))
 POINT(1 4)
 explain extended SELECT AsText(GeometryFromWKB(AsWKB(GeometryFromText('POINT(1 4)'))));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select astext(geometryfromwkb(aswkb(geometryfromtext(_latin1'POINT(1 4)')))) AS `AsText(GeometryFromWKB(AsWKB(GeometryFromText('POINT(1 4)'))))`
 explain extended SELECT AsText(GeometryFromWKB(AsWKB(PointFromText('POINT(1 4)'))));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select astext(geometryfromwkb(aswkb(geometryfromtext(_latin1'POINT(1 4)')))) AS `AsText(GeometryFromWKB(AsWKB(PointFromText('POINT(1 4)'))))`
 SELECT SRID(GeomFromText('LineString(1 1,2 2)',101));
 SRID(GeomFromText('LineString(1 1,2 2)',101))
 101
 explain extended SELECT SRID(GeomFromText('LineString(1 1,2 2)',101));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select srid(geometryfromtext(_latin1'LineString(1 1,2 2)',101)) AS `SRID(GeomFromText('LineString(1 1,2 2)',101))`
 explain extended select issimple(MultiPoint(Point(3, 6), Point(4, 10))), issimple(Point(3, 6));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select issimple(multipoint(point(3,6),point(4,10))) AS `issimple(MultiPoint(Point(3, 6), Point(4, 10)))`,issimple(point(3,6)) AS `issimple(Point(3, 6))`
 create table t1 (a geometry not null);

mysql-test/r/group_by.result

@@ -285,8 +285,8 @@ spid	count(*)
 2	2
 1	1
 explain extended select sql_big_result spid,sum(userid) from t1 group by spid desc;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	8	Using filesort
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	8	100.00	Using filesort
 Warnings:
 Note	1003	select sql_big_result `test`.`t1`.`spID` AS `spid`,sum(`test`.`t1`.`userID`) AS `sum(userid)` from `test`.`t1` group by `test`.`t1`.`spID` desc
 explain select sql_big_result spid,sum(userid) from t1 group by spid desc order by null;
@@ -537,11 +537,11 @@ a	b
 explain select t1.a,t2.b from t1,t2 where t1.a=t2.a group by t1.a,t2.b;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	6	Using temporary; Using filesort
-1	SIMPLE	t2	ALL	a	NULL	NULL	NULL	3	Using where
+1	SIMPLE	t2	ALL	a	NULL	NULL	NULL	4	Using where
 explain select t1.a,t2.b from t1,t2 where t1.a=t2.a group by t1.a,t2.b ORDER BY NULL;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	6	Using temporary
-1	SIMPLE	t2	ALL	a	NULL	NULL	NULL	3	Using where
+1	SIMPLE	t2	ALL	a	NULL	NULL	NULL	4	Using where
 drop table t1,t2;
 create table t1 (a int, b int);
 insert into t1 values (1, 4),(10, 40),(1, 4),(10, 43),(1, 4),(10, 41),(1, 4),(10, 43),(1, 4);

mysql-test/r/having.result

@@ -9,8 +9,8 @@ select count(a) as b from t1 where a=0 having b >=0;
 b
 0
 explain extended select count(a) as b from t1 where a=0 having b >=0;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
 Warnings:
 Note	1003	select count(`test`.`t1`.`a`) AS `b` from `test`.`t1` where 0 having (`b` >= 0)
 drop table t1;

mysql-test/r/heap.result

@@ -166,7 +166,7 @@ alter table t1 add column new_col char(1) not null, add key (btn,new_col), drop
 update t1 set new_col=left(btn,1);
 explain select * from t1 where btn="a";
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	btn	NULL	NULL	NULL	11	Using where
+1	SIMPLE	t1	ALL	btn	NULL	NULL	NULL	14	Using where
 explain select * from t1 where btn="a" and new_col="a";
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	btn	btn	11	const,const	2	Using where

mysql-test/r/heap_hash.result

@@ -166,7 +166,7 @@ alter table t1 add column new_col char(1) not null, add key using HASH (btn,new_
 update t1 set new_col=left(btn,1);
 explain select * from t1 where btn="a";
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	btn	NULL	NULL	NULL	11	Using where
+1	SIMPLE	t1	ALL	btn	NULL	NULL	NULL	14	Using where
 explain select * from t1 where btn="a" and new_col="a";
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	btn	btn	11	const,const	2	Using where

mysql-test/r/index_merge.result

@@ -397,10 +397,10 @@ count(*)
 8704
 explain select * from t1 WHERE cola = 'foo' AND colb = 'bar';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	cola,colb	cola,colb	3,3	NULL	24	Using intersect(cola,colb); Using where
+1	SIMPLE	t1	index_merge	cola,colb	cola,colb	3,3	NULL	32	Using intersect(cola,colb); Using where
 explain select * from t1 force index(cola,colb) WHERE cola = 'foo' AND colb = 'bar';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	cola,colb	cola,colb	3,3	NULL	24	Using intersect(cola,colb); Using where
+1	SIMPLE	t1	index_merge	cola,colb	cola,colb	3,3	NULL	32	Using intersect(cola,colb); Using where
 drop table t1;
 create table t0 (a int);
 insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

mysql-test/r/index_merge_innodb.result

@@ -109,7 +109,7 @@ count(*)
 explain select count(*) from t1 where 
 key1a = 2 and key1b is null and  key2a = 2 and key2b is null;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	i1,i2	i1,i2	10,10	NULL	3	Using intersect(i1,i2); Using where; Using index
+1	SIMPLE	t1	index_merge	i1,i2	i1,i2	10,10	NULL	4	Using intersect(i1,i2); Using where; Using index
 select count(*) from t1 where 
 key1a = 2 and key1b is null and key2a = 2 and key2b is null;
 count(*)
@@ -117,7 +117,7 @@ count(*)
 explain select count(*) from t1 where 
 key1a = 2 and key1b is null and key3a = 2 and key3b is null;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	i1,i3	i1,i3	10,10	NULL	3	Using intersect(i1,i3); Using where; Using index
+1	SIMPLE	t1	index_merge	i1,i3	i1,i3	10,10	NULL	4	Using intersect(i1,i3); Using where; Using index
 select count(*) from t1 where 
 key1a = 2 and key1b is null and key3a = 2 and key3b is null;
 count(*)

mysql-test/r/index_merge_ror.result

@@ -4,7 +4,7 @@ count(*)
 64801
 explain select key1,key2 from t1 where key1=100 and key2=100;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	58	Using intersect(key1,key2); Using where; Using index
+1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	77	Using intersect(key1,key2); Using where; Using index
 select key1,key2 from t1 where key1=100 and key2=100;
 key1	key2
 100	100
@@ -18,14 +18,14 @@ insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, -1, -1, 'key1
 insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 100, 100, 'key4-key3');
 explain select key1,key2,filler1 from t1 where key1=100 and key2=100;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	58	Using intersect(key1,key2); Using where
+1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	77	Using intersect(key1,key2); Using where
 select key1,key2,filler1 from t1 where key1=100 and key2=100;
 key1	key2	filler1
 100	100	key1-key2-key3-key4
 100	100	key1-key2
 explain select key1,key2 from t1 where key1=100 and key2=100;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	58	Using intersect(key1,key2); Using where; Using index
+1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	77	Using intersect(key1,key2); Using where; Using index
 select key1,key2 from t1 where key1=100 and key2=100;
 key1	key2
 100	100
@@ -84,7 +84,7 @@ select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=1
 key1	key2	key3	key4	filler1
 explain select key1,key2 from t1 where key1=100 and key2=100;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	57	Using intersect(key1,key2); Using where; Using index
+1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	76	Using intersect(key1,key2); Using where; Using index
 select key1,key2 from t1 where key1=100 and key2=100;
 key1	key2
 insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-1');
@@ -121,10 +121,10 @@ key1	key2	key3	key4	filler1
 -1	-1	200	-1	key3
 explain select * from t1 where st_a=1 and st_b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	st_a,st_b	4,4	NULL	2637	Using intersect(st_a,st_b); Using where
+1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	st_a,st_b	4,4	NULL	3515	Using intersect(st_a,st_b); Using where
 explain select st_a,st_b from t1 where st_a=1 and st_b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	st_a,st_b	4,4	NULL	2637	Using intersect(st_a,st_b); Using where; Using index
+1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	st_a,st_b	4,4	NULL	3515	Using intersect(st_a,st_b); Using where; Using index
 explain select st_a from t1 ignore index (st_a) where st_a=1 and st_b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,stb_swt1a_2b,stb_swt1b,st_b	st_b	4	const	15093	Using where
@@ -136,35 +136,35 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	stb_swt1a_2b,stb_swt1b,st_b	stb_swt1a_2b	8	const,const	3879	Using where
 explain select * from t1 where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt12a,stb_swt1a_2b	12,12	NULL	44	Using intersect(sta_swt12a,stb_swt1a_2b); Using where
+1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt12a,stb_swt1a_2b	12,12	NULL	58	Using intersect(sta_swt12a,stb_swt1a_2b); Using where
 explain select * from t1 ignore index (sta_swt21a, stb_swt1a_2b) 
 where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,st_a,stb_swt1b,st_b	sta_swt12a,stb_swt1b	12,8	NULL	44	Using intersect(sta_swt12a,stb_swt1b); Using where
+1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,st_a,stb_swt1b,st_b	sta_swt12a,stb_swt1b	12,8	NULL	58	Using intersect(sta_swt12a,stb_swt1b); Using where
 explain select * from t1 ignore index (sta_swt21a, sta_swt12a, stb_swt1a_2b) 
 where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt1a,sta_swt2a,st_a,stb_swt1b,st_b	sta_swt1a,sta_swt2a,stb_swt1b	8,8,8	NULL	43	Using intersect(sta_swt1a,sta_swt2a,stb_swt1b); Using where
+1	SIMPLE	t1	index_merge	sta_swt1a,sta_swt2a,st_a,stb_swt1b,st_b	sta_swt1a,sta_swt2a,stb_swt1b	8,8,8	NULL	57	Using intersect(sta_swt1a,sta_swt2a,stb_swt1b); Using where
 explain select * from t1 ignore index (sta_swt21a, sta_swt12a, stb_swt1a_2b, stb_swt1b) 
 where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt1a,sta_swt2a,st_a,st_b	sta_swt1a,sta_swt2a,st_b	8,8,4	NULL	168	Using intersect(sta_swt1a,sta_swt2a,st_b); Using where
+1	SIMPLE	t1	index_merge	sta_swt1a,sta_swt2a,st_a,st_b	sta_swt1a,sta_swt2a,st_b	8,8,4	NULL	223	Using intersect(sta_swt1a,sta_swt2a,st_b); Using where
 explain select * from t1 
 where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt12a,stb_swt1a_2b	12,12	NULL	44	Using intersect(sta_swt12a,stb_swt1a_2b); Using where
+1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt12a,stb_swt1a_2b	12,12	NULL	58	Using intersect(sta_swt12a,stb_swt1a_2b); Using where
 explain select * from t1 
 where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt1a,stb_swt1b	8,8	NULL	174	Using intersect(sta_swt1a,stb_swt1b); Using where
+1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt1a,stb_swt1b	8,8	NULL	232	Using intersect(sta_swt1a,stb_swt1b); Using where
 explain select st_a from t1 
 where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt1a,stb_swt1b	8,8	NULL	174	Using intersect(sta_swt1a,stb_swt1b); Using where; Using index
+1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt1a,stb_swt1b	8,8	NULL	232	Using intersect(sta_swt1a,stb_swt1b); Using where; Using index
 explain select st_a from t1 
 where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt1a,stb_swt1b	8,8	NULL	174	Using intersect(sta_swt1a,stb_swt1b); Using where; Using index
+1	SIMPLE	t1	index_merge	sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b	sta_swt1a,stb_swt1b	8,8	NULL	232	Using intersect(sta_swt1a,stb_swt1b); Using where; Using index
 drop table t0,t1;
 create table t2 (
 a char(10),

mysql-test/r/innodb_gis.result

@@ -233,8 +233,8 @@ fid	AsText(Envelope(g))
 120	POLYGON((0 0,10 0,10 10,0 10,0 0))
 121	POLYGON((3 6,44 6,44 9,3 9,3 6))
 explain extended select Dimension(g), GeometryType(g), IsEmpty(g), AsText(Envelope(g)) from gis_geometry;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_geometry	ALL	NULL	NULL	NULL	NULL	21	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_geometry	ALL	NULL	NULL	NULL	NULL	21	100.00	
 Warnings:
 Note	1003	select dimension(`test`.`gis_geometry`.`g`) AS `Dimension(g)`,geometrytype(`test`.`gis_geometry`.`g`) AS `GeometryType(g)`,isempty(`test`.`gis_geometry`.`g`) AS `IsEmpty(g)`,astext(envelope(`test`.`gis_geometry`.`g`)) AS `AsText(Envelope(g))` from `test`.`gis_geometry`
 SELECT fid, X(g) FROM gis_point ORDER by fid;
@@ -250,8 +250,8 @@ fid	Y(g)
 103	20
 104	20
 explain extended select X(g),Y(g) FROM gis_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_point	ALL	NULL	NULL	NULL	NULL	4	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_point	ALL	NULL	NULL	NULL	NULL	4	100.00	
 Warnings:
 Note	1003	select x(`test`.`gis_point`.`g`) AS `X(g)`,y(`test`.`gis_point`.`g`) AS `Y(g)` from `test`.`gis_point`
 SELECT fid, AsText(StartPoint(g)) FROM gis_line ORDER by fid;
@@ -285,8 +285,8 @@ fid	IsClosed(g)
 106	1
 107	0
 explain extended select AsText(StartPoint(g)),AsText(EndPoint(g)),GLength(g),NumPoints(g),AsText(PointN(g, 2)),IsClosed(g) FROM gis_line;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_line	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_line	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select astext(startpoint(`test`.`gis_line`.`g`)) AS `AsText(StartPoint(g))`,astext(endpoint(`test`.`gis_line`.`g`)) AS `AsText(EndPoint(g))`,glength(`test`.`gis_line`.`g`) AS `GLength(g)`,numpoints(`test`.`gis_line`.`g`) AS `NumPoints(g)`,astext(pointn(`test`.`gis_line`.`g`,2)) AS `AsText(PointN(g, 2))`,isclosed(`test`.`gis_line`.`g`) AS `IsClosed(g)` from `test`.`gis_line`
 SELECT fid, AsText(Centroid(g)) FROM gis_polygon ORDER by fid;
@@ -315,8 +315,8 @@ fid	AsText(InteriorRingN(g, 1))
 109	LINESTRING(10 10,20 10,20 20,10 20,10 10)
 110	NULL
 explain extended select AsText(Centroid(g)),Area(g),AsText(ExteriorRing(g)),NumInteriorRings(g),AsText(InteriorRingN(g, 1)) FROM gis_polygon;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_polygon	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_polygon	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select astext(centroid(`test`.`gis_polygon`.`g`)) AS `AsText(Centroid(g))`,area(`test`.`gis_polygon`.`g`) AS `Area(g)`,astext(exteriorring(`test`.`gis_polygon`.`g`)) AS `AsText(ExteriorRing(g))`,numinteriorrings(`test`.`gis_polygon`.`g`) AS `NumInteriorRings(g)`,astext(interiorringn(`test`.`gis_polygon`.`g`,1)) AS `AsText(InteriorRingN(g, 1))` from `test`.`gis_polygon`
 SELECT fid, IsClosed(g) FROM gis_multi_line ORDER by fid;
@@ -354,8 +354,8 @@ fid	NumGeometries(g)
 120	2
 121	2
 explain extended SELECT fid, NumGeometries(g) from gis_multi_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select `test`.`gis_multi_point`.`fid` AS `fid`,numgeometries(`test`.`gis_multi_point`.`g`) AS `NumGeometries(g)` from `test`.`gis_multi_point`
 SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point ORDER by fid;
@@ -382,8 +382,8 @@ fid	AsText(GeometryN(g, 1))
 120	POINT(0 0)
 121	POINT(44 6)
 explain extended SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	gis_multi_point	ALL	NULL	NULL	NULL	NULL	3	100.00	
 Warnings:
 Note	1003	select `test`.`gis_multi_point`.`fid` AS `fid`,astext(geometryn(`test`.`gis_multi_point`.`g`,2)) AS `AsText(GeometryN(g, 2))` from `test`.`gis_multi_point`
 SELECT g1.fid as first, g2.fid as second,
@@ -401,9 +401,9 @@ Within(g1.g, g2.g) as w, Contains(g1.g, g2.g) as c, Overlaps(g1.g, g2.g) as o,
 Equals(g1.g, g2.g) as e, Disjoint(g1.g, g2.g) as d, Touches(g1.g, g2.g) as t,
 Intersects(g1.g, g2.g) as i, Crosses(g1.g, g2.g) as r
 FROM gis_geometrycollection g1, gis_geometrycollection g2 ORDER BY first, second;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	g1	ALL	NULL	NULL	NULL	NULL	2	Using temporary; Using filesort
-1	SIMPLE	g2	ALL	NULL	NULL	NULL	NULL	2	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	g1	ALL	NULL	NULL	NULL	NULL	2	100.00	Using temporary; Using filesort
+1	SIMPLE	g2	ALL	NULL	NULL	NULL	NULL	2	100.00	
 Warnings:
 Note	1003	select `test`.`g1`.`fid` AS `first`,`test`.`g2`.`fid` AS `second`,within(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `w`,contains(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `c`,overlaps(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `o`,equals(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `e`,disjoint(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `d`,touches(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `t`,intersects(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `i`,crosses(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `r` from `test`.`gis_geometrycollection` `g1` join `test`.`gis_geometrycollection` `g2` order by `test`.`g1`.`fid`,`test`.`g2`.`fid`
 DROP TABLE gis_point, gis_line, gis_polygon, gis_multi_point, gis_multi_line, gis_multi_polygon, gis_geometrycollection, gis_geometry;

mysql-test/r/insert_update.result

@@ -57,13 +57,13 @@ a	b	c	VALUES(a)
 8	9	60	NULL
 2	1	11	NULL
 explain extended SELECT *, VALUES(a) FROM t1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	100.00	
 Warnings:
 Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c`,values(`test`.`t1`.`a`) AS `VALUES(a)` from `test`.`t1`
 explain extended select * from t1 where values(a);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
 Warnings:
 Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1`
 DROP TABLE t1;

mysql-test/r/join.result

@@ -764,3 +764,15 @@ natural join t5;
 y	c	b	a	z
 1	3	2	1	4
 drop table t1, t2, t3, t4, t5;
+create table t1 (a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t2 (a int, b int, filler char(100), key(a), key(b));
+create table t3 (a int, b int, filler char(100), key(a), key(b));
+insert into t2 
+select @a:= A.a + 10*(B.a + 10*C.a), @a, 'filler' from t1 A, t1 B, t1 C;
+insert into t3 select * from t2 where a < 800;
+explain select * from t2,t3 where t2.a < 200 and t2.b=t3.b;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	ALL	a,b	NULL	NULL	NULL	1000	Using where
+1	SIMPLE	t3	ref	b	b	5	test.t2.b	1	Using where
+drop table t1, t2, t3;

mysql-test/r/key_diff.result

@@ -36,7 +36,7 @@ a	a	a	a
 explain select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	5	
-1	SIMPLE	t2	ALL	b	NULL	NULL	NULL	4	Using where
+1	SIMPLE	t2	ALL	b	NULL	NULL	NULL	5	Using where
 select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B order by binary t1.a,t2.a;
 a	b	a	b
 A	B	a	a

mysql-test/r/myisam.result

@@ -346,11 +346,11 @@ t1	1	c_2	2	a	A	5	NULL	NULL		BTREE
 explain select * from t1,t2 where t1.a=t2.a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	a	NULL	NULL	NULL	2	
-1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	4	Using where
+1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	5	Using where
 explain select * from t1,t2 force index(a) where t1.a=t2.a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	a	NULL	NULL	NULL	2	
-1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	4	Using where
+1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	5	Using where
 explain select * from t1 force index(a),t2 force index(a) where t1.a=t2.a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	a	NULL	NULL	NULL	2	
@@ -362,7 +362,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 explain select * from t1,t2 force index(c) where t1.a=t2.a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	2	
-1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	4	Using where
+1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	5	Using where
 explain select * from t1 where a=0 or a=2;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	5	Using where

mysql-test/r/negation_elimination.result

@@ -384,8 +384,8 @@ NULL	NULL
 2	1
 3	1
 explain extended select a, not(not(a)), not(a <= 2 and not(a)), not(a not like "1"), not (a not in (1,2)), not(a != 2) from t1 where not(not(a)) having not(not(a));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	a	5	NULL	5	Using where; Using index
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	index	NULL	a	5	NULL	5	100.00	Using where; Using index
 Warnings:
 Note	1003	select `test`.`t1`.`a` AS `a`,(`test`.`t1`.`a` <> 0) AS `not(not(a))`,((`test`.`t1`.`a` > 2) or `test`.`t1`.`a`) AS `not(a <= 2 and not(a))`,(`test`.`t1`.`a` like _latin1'1') AS `not(a not like "1")`,(`test`.`t1`.`a` in (1,2)) AS `not (a not in (1,2))`,(`test`.`t1`.`a` = 2) AS `not(a != 2)` from `test`.`t1` where `test`.`t1`.`a` having `test`.`t1`.`a`
 drop table t1;

mysql-test/r/null.result

@@ -3,8 +3,8 @@ select null,\N,isnull(null),isnull(1/0),isnull(1/0 = null),ifnull(null,1),ifnull
 NULL	NULL	isnull(null)	isnull(1/0)	isnull(1/0 = null)	ifnull(null,1)	ifnull(null,"TRUE")	ifnull("TRUE","ERROR")	1/0 is null	1 is not null
 NULL	NULL	1	1	1	1	TRUE	TRUE	1	1
 explain extended select null,\N,isnull(null),isnull(1/0),isnull(1/0 = null),ifnull(null,1),ifnull(null,"TRUE"),ifnull("TRUE","ERROR"),1/0 is null,1 is not null;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select NULL AS `NULL`,NULL AS `NULL`,isnull(NULL) AS `isnull(null)`,isnull((1 / 0)) AS `isnull(1/0)`,isnull(((1 / 0) = NULL)) AS `isnull(1/0 = null)`,ifnull(NULL,1) AS `ifnull(null,1)`,ifnull(NULL,_latin1'TRUE') AS `ifnull(null,"TRUE")`,ifnull(_latin1'TRUE',_latin1'ERROR') AS `ifnull("TRUE","ERROR")`,isnull((1 / 0)) AS `1/0 is null`,(1 is not null) AS `1 is not null`
 select 1 | NULL,1 & NULL,1+NULL,1-NULL;
@@ -29,8 +29,8 @@ select 2 between null and 1,2 between 3 AND NULL,NULL between 1 and 2,2 between
 2 between null and 1	2 between 3 AND NULL	NULL between 1 and 2	2 between NULL and 3	2 between 1 AND null
 0	0	NULL	NULL	NULL
 explain extended select 2 between null and 1,2 between 3 AND NULL,NULL between 1 and 2,2 between NULL and 3, 2 between 1 AND null;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select (2 between NULL and 1) AS `2 between null and 1`,(2 between 3 and NULL) AS `2 between 3 AND NULL`,(NULL between 1 and 2) AS `NULL between 1 and 2`,(2 between NULL and 3) AS `2 between NULL and 3`,(2 between 1 and NULL) AS `2 between 1 AND null`
 SELECT NULL AND NULL, 1 AND NULL, NULL AND 1, NULL OR NULL, 0 OR NULL, NULL OR 0;
@@ -46,8 +46,8 @@ select inet_ntoa(null),inet_aton(null),inet_aton("122.256"),inet_aton("122.226."
 inet_ntoa(null)	inet_aton(null)	inet_aton("122.256")	inet_aton("122.226.")	inet_aton("")
 NULL	NULL	NULL	NULL	NULL
 explain extended select inet_ntoa(null),inet_aton(null),inet_aton("122.256"),inet_aton("122.226."),inet_aton("");
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select inet_ntoa(NULL) AS `inet_ntoa(null)`,inet_aton(NULL) AS `inet_aton(null)`,inet_aton(_latin1'122.256') AS `inet_aton("122.256")`,inet_aton(_latin1'122.226.') AS `inet_aton("122.226.")`,inet_aton(_latin1'') AS `inet_aton("")`
 create table t1 (x int);

mysql-test/r/olap.result

@@ -87,8 +87,8 @@ TV	2	NULL	200
 TV	NULL	NULL	600
 NULL	NULL	NULL	7785
 explain extended select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	15	Using filesort
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	15	100.00	Using filesort
 Warnings:
 Note	1003	select `test`.`t1`.`product` AS `product`,`test`.`t1`.`country_id` AS `country_id`,`test`.`t1`.`year` AS `year`,sum(`test`.`t1`.`profit`) AS `sum(profit)` from `test`.`t1` group by `test`.`t1`.`product`,`test`.`t1`.`country_id`,`test`.`t1`.`year` with rollup
 select product, country_id , sum(profit) from t1 group by product desc, country_id with rollup;

mysql-test/r/partition_pruning.result

@@ -460,27 +460,67 @@ id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 explain partitions select * from t2 where b = 4;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	p0,p1,p2,p3,p4	ref	b	b	5	const	76	Using where
+explain extended select * from t2 where b = 6;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	ref	b	b	5	const	76	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` = 6)
 explain partitions select * from t2 where b = 6;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	p0,p1,p2,p3,p4	ref	b	b	5	const	76	Using where
+explain extended select * from t2 where b in (1,3,5);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	ALL	b	NULL	NULL	NULL	910	40.66	Using where
+Warnings:
+Note	1003	select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` in (1,3,5))
 explain partitions select * from t2 where b in (1,3,5);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where
+explain extended select * from t2 where b in (2,4,6);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	ALL	b	NULL	NULL	NULL	910	25.05	Using where
+Warnings:
+Note	1003	select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` in (2,4,6))
 explain partitions select * from t2 where b in (2,4,6);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where
+explain extended select * from t2 where b in (7,8,9);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	ALL	b	NULL	NULL	NULL	910	36.70	Using where
+Warnings:
+Note	1003	select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` in (7,8,9))
 explain partitions select * from t2 where b in (7,8,9);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where
+explain extended select * from t2 where b > 5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	ALL	b	NULL	NULL	NULL	910	44.84	Using where
+Warnings:
+Note	1003	select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` > 5)
 explain partitions select * from t2 where b > 5;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where
+explain extended select * from t2 where b > 5 and b < 8;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	ALL	b	NULL	NULL	NULL	910	22.09	Using where
+Warnings:
+Note	1003	select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where ((`test`.`t2`.`b` > 5) and (`test`.`t2`.`b` < 8))
 explain partitions select * from t2 where b > 5 and b < 8;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where
+explain extended select * from t2 where b > 5 and b < 7;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	range	b	b	5	NULL	76	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where ((`test`.`t2`.`b` > 5) and (`test`.`t2`.`b` < 7))
 explain partitions select * from t2 where b > 5 and b < 7;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	p0,p1,p2,p3,p4	range	b	b	5	NULL	76	Using where
+explain extended select * from t2 where b > 0 and b < 5;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	ALL	b	NULL	NULL	NULL	910	41.65	Using where
+Warnings:
+Note	1003	select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where ((`test`.`t2`.`b` > 0) and (`test`.`t2`.`b` < 5))
 explain partitions select * from t2 where b > 0 and b < 5;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where

mysql-test/r/query_cache.result

@@ -230,8 +230,8 @@ CURRENT_USER()
 select benchmark(1,1) from t1;
 benchmark(1,1)
 explain extended select benchmark(1,1) from t1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	0	const row not found
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	0	0.00	const row not found
 Warnings:
 Note	1003	select sql_no_cache benchmark(1,1) AS `benchmark(1,1)` from `test`.`t1`
 show status like "Qcache_queries_in_cache";

mysql-test/r/row.result

@@ -46,8 +46,8 @@ select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)));
 row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)))
 NULL
 explain extended select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select ((1,2,(3,4)) in ((3,2,(3,4)),(1,2,(3,NULL)))) AS `row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)))`
 SELECT (1,2,3)=(0,NULL,3);

mysql-test/r/rpl_get_lock.result

@@ -22,8 +22,8 @@ select is_free_lock("lock"), is_used_lock("lock") = connection_id();
 is_free_lock("lock")	is_used_lock("lock") = connection_id()
 0	1
 explain extended select is_free_lock("lock"), is_used_lock("lock");
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache is_free_lock(_latin1'lock') AS `is_free_lock("lock")`,is_used_lock(_latin1'lock') AS `is_used_lock("lock")`
 select is_free_lock("lock2");

mysql-test/r/rpl_master_pos_wait.result

@@ -8,8 +8,8 @@ select master_pos_wait('master-bin.999999',0,2);
 master_pos_wait('master-bin.999999',0,2)
 -1
 explain extended select master_pos_wait('master-bin.999999',0,2);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache master_pos_wait(_latin1'master-bin.999999',0,2) AS `master_pos_wait('master-bin.999999',0,2)`
  select master_pos_wait('master-bin.999999',0);

mysql-test/r/select.result

@@ -1504,8 +1504,8 @@ select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1)
 count(*)	min(fld4)	max(fld4)	sum(fld1)	avg(fld1)	std(fld1)	variance(fld1)
 70	absentee	vest	17788966	254128.0857	3272.5940	10709871.3069
 explain extended select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>"";
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	Using where
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	100.00	Using where
 Warnings:
 Note	1003	select count(0) AS `count(*)`,min(`test`.`t2`.`fld4`) AS `min(fld4)`,max(`test`.`t2`.`fld4`) AS `max(fld4)`,sum(`test`.`t2`.`fld1`) AS `sum(fld1)`,avg(`test`.`t2`.`fld1`) AS `avg(fld1)`,std(`test`.`t2`.`fld1`) AS `std(fld1)`,variance(`test`.`t2`.`fld1`) AS `variance(fld1)` from `test`.`t2` where ((`test`.`t2`.`companynr` = 34) and (`test`.`t2`.`fld4` <> _latin1''))
 select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 group by companynr limit 3;
@@ -2363,7 +2363,7 @@ insert into t2 values (1,3), (2,3), (3,4), (4,4);
 explain select * from t1 left join t2 on a=c where d in (4);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ref	c,d	d	5	const	2	Using where
-1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	3	Using where
+1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	4	Using where
 select * from t1 left join t2 on a=c where d in (4);
 a	b	c	d
 3	2	3	4
@@ -2371,7 +2371,7 @@ a	b	c	d
 explain select * from t1 left join t2 on a=c where d = 4;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ref	c,d	d	5	const	2	Using where
-1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	3	Using where
+1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	4	Using where
 select * from t1 left join t2 on a=c where d = 4;
 a	b	c	d
 3	2	3	4
@@ -3353,7 +3353,7 @@ In next EXPLAIN, B.rows must be exactly 10:
 explain select * from t2 A, t2 B where A.a=5 and A.b=5 and A.C<5
 and B.a=5 and B.b=A.e and (B.b =1 or B.b = 3 or B.b=5);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	A	range	PRIMARY	PRIMARY	12	NULL	3	Using where
+1	SIMPLE	A	range	PRIMARY	PRIMARY	12	NULL	4	Using where
 1	SIMPLE	B	ref	PRIMARY	PRIMARY	8	const,test.A.e	10	
 drop table t1, t2;
 CREATE TABLE t1 (a int PRIMARY KEY, b int, INDEX(b));

mysql-test/r/ssl.result

@@ -1391,7 +1391,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t4	eq_ref	PRIMARY	PRIMARY	1	test.t2.companynr	1	
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	12	Using where
+1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	11	Using where
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -1399,7 +1399,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	12	Using where
+1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	11	Using where
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	
 explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -1415,7 +1415,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	Using where
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	12	Using where
+1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	11	Using where
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -1505,8 +1505,8 @@ select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1)
 count(*)	min(fld4)	max(fld4)	sum(fld1)	avg(fld1)	std(fld1)	variance(fld1)
 70	absentee	vest	17788966	254128.0857	3272.5940	10709871.3069
 explain extended select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>"";
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	Using where
+id	select_type	table	type	possible_keys	key	key_len	ref	in_rows	rows	Extra
+1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	1199	Using where
 Warnings:
 Note	1003	select count(0) AS `count(*)`,min(`test`.`t2`.`fld4`) AS `min(fld4)`,max(`test`.`t2`.`fld4`) AS `max(fld4)`,sum(`test`.`t2`.`fld1`) AS `sum(fld1)`,avg(`test`.`t2`.`fld1`) AS `avg(fld1)`,std(`test`.`t2`.`fld1`) AS `std(fld1)`,variance(`test`.`t2`.`fld1`) AS `variance(fld1)` from `test`.`t2` where ((`test`.`t2`.`companynr` = 34) and (`test`.`t2`.`fld4` <> _latin1''))
 select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 group by companynr limit 3;

mysql-test/r/ssl_compress.result

@@ -1394,7 +1394,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t4	eq_ref	PRIMARY	PRIMARY	1	test.t2.companynr	1	
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	12	Using where
+1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	11	Using where
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -1402,7 +1402,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 and companynr > 0;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	12	Using where
+1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	11	Using where
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	
 explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr is null;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -1418,7 +1418,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	Using where
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr is null;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	12	Using where
+1	SIMPLE	t4	ALL	PRIMARY	NULL	NULL	NULL	11	Using where
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	
 explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0 or companynr < 0 or companynr > 0;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -1508,8 +1508,8 @@ select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1)
 count(*)	min(fld4)	max(fld4)	sum(fld1)	avg(fld1)	std(fld1)	variance(fld1)
 70	absentee	vest	17788966	254128.0857	3272.5940	10709871.3069
 explain extended select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>"";
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	Using where
+id	select_type	table	type	possible_keys	key	key_len	ref	in_rows	rows	Extra
+1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1199	1199	Using where
 Warnings:
 Note	1003	select count(0) AS `count(*)`,min(`test`.`t2`.`fld4`) AS `min(fld4)`,max(`test`.`t2`.`fld4`) AS `max(fld4)`,sum(`test`.`t2`.`fld1`) AS `sum(fld1)`,avg(`test`.`t2`.`fld1`) AS `avg(fld1)`,std(`test`.`t2`.`fld1`) AS `std(fld1)`,variance(`test`.`t2`.`fld1`) AS `variance(fld1)` from `test`.`t2` where ((`test`.`t2`.`companynr` = 34) and (`test`.`t2`.`fld4` <> _latin1''))
 select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 group by companynr limit 3;

mysql-test/r/type_blob.result

@@ -514,8 +514,8 @@ explain extended select
 charset(load_file('../../std_data/words.dat')),
 collation(load_file('../../std_data/words.dat')),
 coercibility(load_file('../../std_data/words.dat'));
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache charset(load_file(_latin1'../../std_data/words.dat')) AS `charset(load_file('../../std_data/words.dat'))`,collation(load_file(_latin1'../../std_data/words.dat')) AS `collation(load_file('../../std_data/words.dat'))`,coercibility(load_file(_latin1'../../std_data/words.dat')) AS `coercibility(load_file('../../std_data/words.dat'))`
 update t1 set imagem=load_file('../../std_data/words.dat') where id=1;

mysql-test/r/union.result

@@ -83,10 +83,10 @@ a	b
 (select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1) order by t1.b;
 ERROR 42000: Table 't1' from one of the SELECTs cannot be used in global ORDER clause
 explain extended (select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1) order by b desc;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	4	
-2	UNION	t2	ALL	NULL	NULL	NULL	NULL	4	Using filesort
-NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	Using filesort
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	4	100.00	
+2	UNION	t2	ALL	NULL	NULL	NULL	NULL	4	100.00	Using filesort
+NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	Using filesort
 Warnings:
 Note	1003	(select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` limit 2) union all (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`a` limit 1) order by `b` desc
 (select sql_calc_found_rows  a,b from t1 limit 2)  union all (select a,b from t2 order by a) limit 2;
@@ -475,10 +475,10 @@ create table t2 (a int not null primary key auto_increment, b int);
 insert into t1 (b) values (1),(2),(2),(3);
 insert into t2 (b) values (10),(11),(12),(13);
 explain extended (select * from t1 where a=1) union (select * from t2 where a=1);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t1	const	PRIMARY	PRIMARY	4	const	1	
-2	UNION	t2	const	PRIMARY	PRIMARY	4	const	1	
-NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	const	PRIMARY	PRIMARY	4	const	1	100.00	
+2	UNION	t2	const	PRIMARY	PRIMARY	4	const	1	100.00	
+NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
 Warnings:
 Note	1003	(select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` = 1)) union (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` = 1))
 (select * from t1 where a=5) union (select * from t2 where a=1);
@@ -500,7 +500,7 @@ explain (select * from t1 where a=1 and b=10) union (select straight_join t1.a,t
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
 2	UNION	t1	index	PRIMARY	PRIMARY	4	NULL	4	Using index
-2	UNION	t2	index	PRIMARY	PRIMARY	4	NULL	3	Using where; Using index
+2	UNION	t2	index	PRIMARY	PRIMARY	4	NULL	4	Using where; Using index
 NULL	UNION RESULT	<union1,2>	ALL	NULL	NULL	NULL	NULL	NULL	
 explain (select * from t1 where a=1) union (select * from t1 where b=1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

mysql-test/r/varbinary.result

@@ -12,8 +12,8 @@ create table t1 (ID int(8) unsigned zerofill not null auto_increment,UNIQ bigint
 insert into t1 set UNIQ=0x38afba1d73e6a18a;
 insert into t1 set UNIQ=123;
 explain extended select * from t1 where UNIQ=0x38afba1d73e6a18a;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	const	UNIQ	UNIQ	8	const	1	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	const	UNIQ	UNIQ	8	const	1	100.00	
 Warnings:
 Note	1003	select `test`.`t1`.`ID` AS `ID`,`test`.`t1`.`UNIQ` AS `UNIQ` from `test`.`t1` where 1
 drop table t1;

mysql-test/r/variables.result

@@ -72,8 +72,8 @@ select @t1:=(@t2:=1)+@t3:=4,@t1,@t2,@t3;
 @t1:=(@t2:=1)+@t3:=4	@t1	@t2	@t3
 5	5	1	4
 explain extended select @t1:=(@t2:=1)+@t3:=4,@t1,@t2,@t3;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache (@t1:=((@t2:=1) + (@t3:=4))) AS `@t1:=(@t2:=1)+@t3:=4`,(@t1) AS `@t1`,(@t2) AS `@t2`,(@t3) AS `@t3`
 select @t5;
@@ -132,16 +132,16 @@ select last_insert_id(345);
 last_insert_id(345)
 345
 explain extended select last_insert_id(345);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache last_insert_id(345) AS `last_insert_id(345)`
 select @@IDENTITY,last_insert_id(), @@identity;
 @@IDENTITY	last_insert_id()	@@identity
 345	345	345
 explain extended select @@IDENTITY,last_insert_id(), @@identity;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
 Warnings:
 Note	1003	select sql_no_cache 345 AS `@@IDENTITY`,last_insert_id() AS `last_insert_id()`,345 AS `@@identity`
 set big_tables=OFF, big_tables=ON, big_tables=0, big_tables=1, big_tables="OFF", big_tables="ON";

mysql-test/r/view.result

@@ -48,8 +48,8 @@ ERROR 42S22: Unknown column 'b' in 'field list'
 select v1.b from v1;
 ERROR 42S22: Unknown column 'v1.b' in 'field list'
 explain extended select c from v1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	100.00	
 Warnings:
 Note	1003	select (`test`.`t1`.`b` + 1) AS `c` from `test`.`t1`
 create algorithm=temptable view v2 (c) as select b+1 from t1;
@@ -64,9 +64,9 @@ c
 6
 11
 explain extended select c from v2;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	
-2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	100.00	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	100.00	
 Warnings:
 Note	1003	select `v2`.`c` AS `c` from `test`.`v2`
 create view v3 (c) as select a+1 from v1;
@@ -82,8 +82,8 @@ c
 7
 12
 explain extended select c from v3;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	100.00	
 Warnings:
 Note	1003	select ((`test`.`t1`.`b` + 1) + 1) AS `c` from `test`.`t1`
 create algorithm=temptable view v4 (c) as select c+1 from v2;
@@ -95,10 +95,10 @@ c
 7
 12
 explain extended select c from v4;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	
-2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	5	
-3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	100.00	
+2	DERIVED	<derived3>	ALL	NULL	NULL	NULL	NULL	5	100.00	
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	100.00	
 Warnings:
 Note	1003	select `v4`.`c` AS `c` from `test`.`v4`
 create view v5 (c) as select c+1 from v2;
@@ -110,9 +110,9 @@ c
 7
 12
 explain extended select c from v5;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	<derived3>	ALL	NULL	NULL	NULL	NULL	5	
-3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<derived3>	ALL	NULL	NULL	NULL	NULL	5	100.00	
+3	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	100.00	
 Warnings:
 Note	1003	select (`v2`.`c` + 1) AS `c` from `test`.`v2`
 create algorithm=temptable view v6 (c) as select c+1 from v1;
@@ -124,9 +124,9 @@ c
 7
 12
 explain extended select c from v6;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	
-2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	5	100.00	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	5	100.00	
 Warnings:
 Note	1003	select `v6`.`c` AS `c` from `test`.`v6`
 show tables;
@@ -375,8 +375,8 @@ c
 20
 30
 explain extended select * from v1;
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	Using where
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	5	100.00	Using where
 Warnings:
 Note	1003	select `test`.`t1`.`b` AS `c` from `test`.`t1` where (`test`.`t1`.`a` < 3)
 update v1 set c=c+1;
@@ -1390,10 +1390,10 @@ a	a	b
 2	2	NULL
 4	NULL	NULL
 explain extended select * from t3 left join v3 on (t3.a = v3.a);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	
-1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	
-1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	100.00	
 Warnings:
 Note	1003	select `test`.`t3`.`a` AS `a`,`test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `b` from `test`.`t3` left join (`test`.`t1` left join `test`.`t2` on((`test`.`t1`.`a` = `test`.`t2`.`a`))) on((`test`.`t3`.`a` = `test`.`t1`.`a`)) where 1
 create view v1 (a) as select a from t1;
@@ -1405,10 +1405,10 @@ a	a	b
 2	2	NULL
 4	NULL	NULL
 explain extended select * from t3 left join v4 on (t3.a = v4.a);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	
-1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	
-1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	3	100.00	
+1	PRIMARY	t2	ALL	NULL	NULL	NULL	NULL	2	100.00	
 Warnings:
 Note	1003	select `test`.`t3`.`a` AS `a`,`test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `b` from `test`.`t3` left join (`test`.`t1` left join (`test`.`t2`) on((`test`.`t1`.`a` = `test`.`t2`.`a`))) on((`test`.`t3`.`a` = `test`.`t1`.`a`)) where 1
 prepare stmt1 from "select * from t3 left join v4 on (t3.a = v4.a);";

mysql-test/t/ctype_cp1250_ch.test

 -- source include/have_cp1250_ch.inc
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
 
 SHOW COLLATION LIKE 'cp1250_czech_cs';
 

mysql-test/t/func_like.test

@@ -8,8 +8,8 @@ drop table if exists t1;
 
 create table t1 (a varchar(10), key(a));
 insert into t1 values ("a"),("abc"),("abcd"),("hello"),("test");
-explain select * from t1 where a like 'abc%';
-explain select * from t1 where a like concat('abc','%');
+explain extended select * from t1 where a like 'abc%';
+explain extended select * from t1 where a like concat('abc','%');
 select * from t1 where a like "abc%";
 select * from t1 where a like concat("abc","%");
 select * from t1 where a like "ABC%";

mysql-test/t/group_min_max.test

@@ -489,7 +489,7 @@ select a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1
 -- plans
 explain select distinct a1,a2,b from t1;
 explain select distinct a1,a2,b from t1 where (a2 >= 'b') and (b = 'a');
-explain select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
+explain extended select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
 explain select distinct a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
 explain select distinct b from t1 where (a2 >= 'b') and (b = 'a');
 
@@ -497,7 +497,7 @@ explain select distinct b from t1 where (a2 >= 'b') and (b = 'a');
 explain select distinct a1,a2,b from t2;
 --replace_column 9 #
 explain select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a');
-explain select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
+explain extended select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
 --replace_column 9 #
 explain select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
 explain select distinct b from t2 where (a2 >= 'b') and (b = 'a');
@@ -568,9 +568,9 @@ select distinct b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
 
 explain select count(distinct a1,a2,b) from t1 where (a2 >= 'b') and (b = 'a');
 explain select count(distinct a1,a2,b,c) from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
-explain select count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
+explain extended select count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
 explain select count(distinct b) from t1 where (a2 >= 'b') and (b = 'a');
-explain select ord(a1) + count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a');
+explain extended select ord(a1) + count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a');
 
 select count(distinct a1,a2,b) from t1 where (a2 >= 'b') and (b = 'a');
 select count(distinct a1,a2,b,c) from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
@@ -607,19 +607,19 @@ explain select a1,a2,b,d from t1 group by a1,a2,b;
 
 -- predicate that references an attribute that is after the MIN/MAX argument
 -- in the index
-explain select a1,a2,min(b),max(b) from t1
+explain extended select a1,a2,min(b),max(b) from t1
 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (c > 'a111') group by a1,a2;
 
 -- predicate that references a non-indexed attribute
-explain select a1,a2,b,min(c),max(c) from t1
+explain extended select a1,a2,b,min(c),max(c) from t1
 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (d > 'xy2') group by a1,a2,b;
 
-explain select a1,a2,b,c from t1
+explain extended select a1,a2,b,c from t1
 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (d > 'xy2') group by a1,a2,b,c;
 
 -- non-equality predicate for a non-group select attribute
 explain select a1,a2,b,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') or (b < 'b') group by a1;
-explain select a1,a2,b from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (c > 'a111') group by a1,a2,b;
+explain extended select a1,a2,b from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (c > 'a111') group by a1,a2,b;
 
 -- non-group field with an equality predicate that references a keypart after the
 -- MIN/MAX argument
@@ -638,8 +638,8 @@ explain select a1, a2, b, c, min(d), max(d) from t1 group by a1,a2,b,c;
 
 -- other aggregate functions than MIN/MAX
 explain select a1,a2,count(a2) from t1 group by a1,a2,b;
-explain select a1,a2,count(a2) from t1 where (a1 > 'a') group by a1,a2,b;
-explain select sum(ord(a1)) from t1 where (a1 > 'a') group by a1,a2,b;
+explain extended select a1,a2,count(a2) from t1 where (a1 > 'a') group by a1,a2,b;
+explain extended select sum(ord(a1)) from t1 where (a1 > 'a') group by a1,a2,b;
 
 
 #

mysql-test/t/index_merge_ror.test

@@ -97,7 +97,6 @@ select count(*) from t1;
 # One row results tests for cases where a single row matches all conditions 
 explain select key1,key2 from t1 where key1=100 and key2=100;
 select key1,key2 from t1 where key1=100 and key2=100;
-
 explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
 select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
 

mysql-test/t/index_merge_ror_cpk.test

@@ -63,7 +63,7 @@ select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
 # Verify that CPK is always used for index intersection scans
 # (this is because it is used as a filter, not for retrieval)
 explain select * from t1 where badkey=1 and key1=10;
---replace_result 38 ROWS 37 ROWS
+--replace_column 9 ROWS
 explain select * from t1 where pk1 < 7500 and key1 = 10;
   
 # Verify that keys with 'tails' of PK members are ok.

mysql-test/t/join.test

@@ -590,3 +590,22 @@ select * from ((t3 natural join (t1 natural join t2)) natural join t4)
 drop table t1, t2, t3, t4, t5;
 
 # End of tests for WL#2486 - natural/using join
+
+#
+# BUG#14940: Make E(#rows) from "range" access be re-used by range optimizer
+#
+create table t1 (a int); 
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+create table t2 (a int, b int, filler char(100), key(a), key(b));
+create table t3 (a int, b int, filler char(100), key(a), key(b));
+
+insert into t2 
+  select @a:= A.a + 10*(B.a + 10*C.a), @a, 'filler' from t1 A, t1 B, t1 C;
+insert into t3 select * from t2 where a < 800;
+
+# The order of tables must be t2,t3:
+explain select * from t2,t3 where t2.a < 200 and t2.b=t3.b;
+
+drop table t1, t2, t3;
+

mysql-test/t/partition_pruning.test

@@ -407,13 +407,29 @@ explain partitions select * from t2 where a = 833;
 explain partitions select * from t2 where (a = 100 OR a = 900);
 explain partitions select * from t2 where (a > 100 AND a < 600);
 explain partitions select * from t2 where b = 4;
+
+explain extended select * from t2 where b = 6;
 explain partitions select * from t2 where b = 6;
+
+explain extended select * from t2 where b in (1,3,5);
 explain partitions select * from t2 where b in (1,3,5);
+
+explain extended select * from t2 where b in (2,4,6);
 explain partitions select * from t2 where b in (2,4,6);
+
+explain extended select * from t2 where b in (7,8,9);
 explain partitions select * from t2 where b in (7,8,9);
+
+explain extended select * from t2 where b > 5;
 explain partitions select * from t2 where b > 5;
+
+explain extended select * from t2 where b > 5 and b < 8;
 explain partitions select * from t2 where b > 5 and b < 8;
+
+explain extended select * from t2 where b > 5 and b < 7;
 explain partitions select * from t2 where b > 5 and b < 7;
+
+explain extended select * from t2 where b > 0 and b < 5;
 explain partitions select * from t2 where b > 0 and b < 5;
 
 flush status;

sql/sql_class.cc

@@ -852,6 +852,11 @@ int THD::send_explain_fields(select_result *result)
   item->maybe_null=1;
   field_list.push_back(item= new Item_return_int("rows", 10,
                                                  MYSQL_TYPE_LONGLONG));
+  if (lex->describe & DESCRIBE_EXTENDED)
+  {
+    field_list.push_back(item= new Item_float("filtered", 0.1234, 2, 4));
+    item->maybe_null=1;
+  }
   item->maybe_null= 1;
   field_list.push_back(new Item_empty_string("Extra", 255, cs));
   return (result->send_fields(field_list,

sql/sql_select.cc

@@ -2074,6 +2074,7 @@ make_join_statistics(JOIN *join, TABLE_LIST *tables, COND *conds,
     s->key_dependent= 0;
     if (tables->schema_table)
       table->file->stats.records= 2;
+    table->quick_condition_rows= table->file->records();
 
     s->on_expr_ref= &tables->on_expr;
     if (*s->on_expr_ref)
@@ -3754,14 +3755,24 @@ best_access_path(JOIN      *join,
   {                                             // Check full join
     ha_rows rnd_records= s->found_records;
     /*
-      If there is a restriction on the table, assume that 25% of the
-      rows can be skipped on next part.
-      This is to force tables that this table depends on before this
-      table
+      If there is a filtering condition on the table (i.e. ref analyzer found
+      at least one "table.keyXpartY= exprZ", where exprZ refers only to tables
+      preceding this table in the join order we're now considering), then 
+      assume that 25% of the rows will be filtered out by this condition.
+
+      This heuristic is supposed to force tables used in exprZ to be before
+      this table in join order.
     */
     if (found_constraint)
       rnd_records-= rnd_records/4;
 
+    /*
+      If applicable, get a more accurate estimate. Don't use the two
+      heuristics at once.
+    */
+    if (s->table->quick_condition_rows != s->found_records)
+      rnd_records= s->table->quick_condition_rows;
+
     /*
       Range optimizer never proposes a RANGE if it isn't better
       than FULL: so if RANGE is present, it's always preferred to FULL.
@@ -3773,6 +3784,10 @@ best_access_path(JOIN      *join,
         For each record we:
         - read record range through 'quick'
         - skip rows which does not satisfy WHERE constraints
+        TODO: 
+        We take into account possible use of join cache for ALL/index
+        access (see first else-branch below), but we don't take it into 
+        account here for range/index_merge access. Find out why this is so.
       */
       tmp= record_count *
         (s->quick->read_time +
@@ -4342,6 +4357,8 @@ best_extension_by_limited_search(JOIN      *join,
     return;
 
   DBUG_ENTER("best_extension_by_limited_search");
+  DBUG_EXECUTE("opt", print_plan(join, idx, read_time, record_count, idx,
+                                 "SOFAR:"););
 
   /* 
      'join' is a partial plan with lower cost than the best plan so far,
@@ -14065,6 +14082,8 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
       item_list.push_back(item_null);
     if (join->thd->lex->describe & DESCRIBE_PARTITIONS)
       item_list.push_back(item_null);
+    if (join->thd->lex->describe & DESCRIBE_EXTENDED)
+      item_list.push_back(item_null);
   
     item_list.push_back(new Item_string(message,strlen(message),cs));
     if (result->send_data(item_list))
@@ -14110,6 +14129,9 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
       }
       item_list.push_back(new Item_string(table_name_buffer, len, cs));
     }
+    /* partitions */
+    if (join->thd->lex->describe & DESCRIBE_PARTITIONS)
+      item_list.push_back(item_null);
     /* type */
     item_list.push_back(new Item_string(join_type_str[JT_ALL],
 					  strlen(join_type_str[JT_ALL]),
@@ -14122,6 +14144,9 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
     item_list.push_back(item_null);
     /* ref */
     item_list.push_back(item_null);
+    /* in_rows */
+    if (join->thd->lex->describe & DESCRIBE_EXTENDED)
+      item_list.push_back(item_null);
     /* rows */
     item_list.push_back(item_null);
     /* extra */
@@ -14277,10 +14302,33 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
 	item_list.push_back(item_null);
 	item_list.push_back(item_null);
       }
+      
       /* Add "rows" field to item_list. */
-      item_list.push_back(new Item_int((longlong) (ulonglong)
-				       join->best_positions[i]. records_read,
-				       21));
+      ha_rows examined_rows;
+      if (tab->select && tab->select->quick)
+        examined_rows= tab->select->quick->records;
+      else if (tab->type == JT_NEXT || tab->type == JT_ALL)
+        examined_rows= tab->table->file->records();
+      else
+        examined_rows=(ha_rows)join->best_positions[i].records_read; 
+ 
+      item_list.push_back(new Item_int((longlong) (ulonglong) examined_rows, 
+                                       21));
+
+      /* Add "filtered" field to item_list. */
+      if (join->thd->lex->describe & DESCRIBE_EXTENDED)
+      {
+        Item_float *filtered;
+        float f; 
+        if (examined_rows)
+          f= 100.0 * join->best_positions[i].records_read / examined_rows;
+        else
+          f= 0.0;
+        item_list.push_back((filtered= new Item_float(f)));
+        filtered->decimals= 2;
+      }
+
+
       /* Build "Extra" field and add it to item_list. */
       my_bool key_read=table->key_read;
       if ((tab->type == JT_NEXT || tab->type == JT_CONST) &&

sql/sql_select.h

@@ -128,7 +128,21 @@ typedef struct st_join_table {
   key_map	checked_keys;			/* Keys checked in find_best */
   key_map	needed_reg;
   key_map       keys;                           /* all keys with can be used */
-  ha_rows	records,found_records,read_time;
+
+  /* Either #rows in the table or 1 for const table.  */
+  ha_rows	records;
+  /*
+    Number of records that will be scanned (yes scanned, not returned) by the
+    best 'independent' access method, i.e. table scan or QUICK_*_SELECT)
+  */
+  ha_rows       found_records;
+  /*
+    Cost of accessing the table using "ALL" or range/index_merge access
+    method (but not 'index' for some reason), i.e. this matches method which
+    E(#records) is in found_records.
+  */
+  ha_rows       read_time;
+  
   table_map	dependent,key_dependent;
   uint		use_quick,index;
   uint		status;				// Save status for cache
@@ -156,15 +170,24 @@ enum_nested_loop_state sub_select_cache(JOIN *join, JOIN_TAB *join_tab, bool
 enum_nested_loop_state sub_select(JOIN *join,JOIN_TAB *join_tab, bool
                                   end_of_records);
 
-
-typedef struct st_position			/* Used in find_best */
+/*
+  Information about a position of table within a join order. Used in join
+  optimization.
+*/
+typedef struct st_position
 {
   double records_read;
+  /* 
+    Cost accessing the table in course of the entire complete join execution,
+    i.e. cost of one access method use (e.g. 'range' or 'ref' scan ) times 
+    number the access method will be invoked.
+  */
   double read_time;
   JOIN_TAB *table;
   KEYUSE *key;
 } POSITION;
 
+
 typedef struct st_rollup
 {
   enum State { STATE_NONE, STATE_INITED, STATE_READY };

sql/table.h

@@ -264,11 +264,28 @@ struct st_table {
   MY_BITMAP     *read_set, *write_set;          /* Active column sets */
   query_id_t	query_id;
 
+  /* 
+    For each key that has quick_keys.is_set(key) == TRUE: estimate of #records
+    and max #key parts that range access would use.
+  */
   ha_rows	quick_rows[MAX_KEY];
+
+  /* Bitmaps of key parts that =const for the entire join. */
   key_part_map  const_key_parts[MAX_KEY];
+
   uint		quick_key_parts[MAX_KEY];
   uint		quick_n_ranges[MAX_KEY];
 
+  /* 
+    Estimate of number of records that satisfy SARGable part of the table
+    condition, or table->file->records if no SARGable condition could be
+    constructed.
+    This value is used by join optimizer as an estimate of number of records
+    that will pass the table condition (condition that depends on fields of 
+    this table and constants)
+  */
+  ha_rows       quick_condition_rows;
+
   /*
     If this table has TIMESTAMP field with auto-set property (pointed by
     timestamp_field member) then this variable indicates during which