merge

mysql-test/r/fulltext.result:
  Auto merged
mysql-test/r/func_group.result:
  Auto merged
mysql-test/t/fulltext.test:
  Auto merged
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/item_timefunc.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_select.h:
  Auto merged
sql/sql_show.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged

mysql-test/r/auto_increment.result

@@ -112,6 +112,11 @@ insert into t1 set i = null;
 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
+Warnings:
+Note	1003	select high_priority no_cache 255 AS `last_insert_id()`
 insert into t1 set i = 254;
 ERROR 23000: Duplicate entry '254' for key 1
 select last_insert_id();

mysql-test/r/bench_count_distinct.result

@@ -3,4 +3,9 @@ create table t1(n int not null, key(n)) delay_key_write = 1;
 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
+Warnings:
+Note	1003	select high_priority count(distinct test.t1.n) AS `count(distinct n)` from test.t1
 drop table t1;

mysql-test/r/case.result

@@ -23,6 +23,11 @@ false
 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
+Warnings:
+Note	1003	select high_priority (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;
 CASE 2.0 when 1 then "one" WHEN 2.0 then "two" ELSE "more" END
 two
@@ -57,6 +62,11 @@ fcase	count(*)
 0	2
 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
+Warnings:
+Note	1003	select high_priority (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;
 fcase	count(*)
 nothing	2
@@ -122,6 +132,14 @@ CREATE TABLE t1 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');
+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
+Warnings:
+Note	1003	select high_priority 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'latin1_bin'),_latin1'b') AS `COALESCE('a' COLLATE latin1_bin,'b')`
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (

mysql-test/r/cast.result

@@ -16,6 +16,11 @@ cast(-5 as unsigned) -1	cast(-5 as unsigned) + 1
 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
+Warnings:
+Note	1003	select high_priority ~(5) AS `~5`,cast(~(5) as signed) AS `cast(~5 as signed)`
 select cast(5 as unsigned) -6.0;
 cast(5 as unsigned) -6.0
 -1.0

mysql-test/r/ctype_collate.result

@@ -521,6 +521,11 @@ character_set_client	latin1
 SELECT charset('a'),collation('a'),coercibility('a'),'a'='A';
 charset('a')	collation('a')	coercibility('a')	'a'='A'
 latin1	latin1_swedish_ci	3	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
+Warnings:
+Note	1003	select high_priority 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;
 SHOW VARIABLES LIKE 'collation_client';
 Variable_name	Value

mysql-test/r/ctype_utf8.result

@@ -47,6 +47,9 @@ locate(_utf8 0xD091, _utf8 0xD0B0D0B1D0B2 collate utf8_bin)
 select locate(_utf8 0xD0B1, _utf8 0xD0B0D091D0B2 collate utf8_bin);
 locate(_utf8 0xD0B1, _utf8 0xD0B0D091D0B2 collate utf8_bin)
 0
+select length(_utf8 0xD0B1), bit_length(_utf8 0xD0B1), char_length(_utf8 0xD0B1);
+length(_utf8 0xD0B1)	bit_length(_utf8 0xD0B1)	char_length(_utf8 0xD0B1)
+2	16	1
 select 'a' like 'a';
 'a' like 'a'
 1

mysql-test/r/date_formats.result

@@ -155,3 +155,8 @@ a
 select get_format(DATETIME, 'eur') as a;
 a
 %Y-%m-%d-%H.%i.%s
+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
+Warnings:
+Note	1003	select high_priority makedate(1997,1) AS `makedate(1997,1)`,addtime(_latin1'31.12.97 11.59.59.999999 PM',_latin1'31.12.97 11.59.59.999999 PM') 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',_latin1'31.12.97 11.59.59.999999 PM') 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")`

mysql-test/r/derived.result

@@ -227,6 +227,4 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	eq_ref	PRIMARY	PRIMARY	4	THEMAX.E2	1	Using where
 2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
 3	DEPENDENT SUBQUERY	B	ALL	NULL	NULL	NULL	NULL	2	Using where
-Warnings:
-Note	1275	Field or reference 'A.E2' of SELECT #3 was resolved in SELECT #2
 drop table t1;

mysql-test/r/fulltext.result

@@ -9,6 +9,11 @@ select * from t1 where MATCH(a,b) AGAINST ("collections");
 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
+Warnings:
+Note	1003	select high_priority 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");
 a	b
 Full-text indexes	are called collections
@@ -65,6 +70,11 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 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
+Warnings:
+Note	1003	select high_priority 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);
 a	b
 MySQL has now support	for full-text search

mysql-test/r/func_compress.result

@@ -7,9 +7,19 @@ length(@test_compress_string)
 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
+Warnings:
+Note	1003	select high_priority 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
+Warnings:
+Note	1003	select high_priority 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));
 uncompressed_length(compress(@test_compress_string))
 117

mysql-test/r/func_default.result

+drop table if exists t1,t2;
+create table t1(str varchar(10) default 'def',strnull varchar(10),intg int default '10',rel double default '3.14');
+insert into t1 values ('','',0,0.0);
+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	
+Warnings:
+Note	1003	select high_priority 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);
+str	strnull	intg	rel
+		0	0
+explain select * from t1 where str <> default(str);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	
+drop table t1;

mysql-test/r/func_gconcat.result

@@ -14,6 +14,11 @@ grp	group_concat(c)
 1	a
 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
+Warnings:
+Note	1003	select high_priority test.t1.grp AS `grp`,group_concat(test.t1.c seperator ',') AS `group_concat(c)` from test.t1 group by test.t1.grp
 select grp,group_concat(a,c) from t1 group by grp;
 grp	group_concat(a,c)
 1	1a
@@ -79,6 +84,11 @@ grp	group_concat(distinct c order by c desc)
 1	a
 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
+Warnings:
+Note	1003	select high_priority test.t1.grp AS `grp`,group_concat(distinct test.t1.c order by test.t1.c seperator ',') 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;
 grp	group_concat(c order by c separator ",")
 1	a
@@ -94,6 +104,11 @@ grp	group_concat(distinct c order by c separator ",")
 1	a
 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
+Warnings:
+Note	1003	select high_priority test.t1.grp AS `grp`,group_concat(distinct test.t1.c order by test.t1.c seperator ',') 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;
 grp	group_concat(distinct c order by c desc separator ",")
 1	a

mysql-test/r/func_group.result

@@ -597,11 +597,16 @@ a	count(b)	sum(b)	avg(b)	std(b)	min(b)	max(b)	bit_and(b)	bit_or(b)
 1	0	NULL	NULL	NULL	NULL	NULL	0	0
 2	1	1	1.0000	0.0000	1	1	0	1
 3	1	1	1.0000	0.0000	1	1	1	1
-select SQL_BIG_RESULT a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
-a	count(b)	sum(b)	avg(b)	std(b)	min(b)	max(b)	bit_and(b)	bit_or(b)
-1	0	NULL	NULL	NULL	NULL	NULL	18446744073709551615	0
-2	1	1	1.0000	0.0000	1	1	1	1
-3	1	1	1.0000	0.0000	1	1	1	1
+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;
+a	count(b)	sum(b)	avg(b)	std(b)	min(b)	max(b)	bit_and(b)	bit_or(b)	bit_xor(b)
+1	0	NULL	NULL	NULL	NULL	NULL	18446744073709551615	0	0
+2	1	1	1.0000	0.0000	1	1	1	1	1
+3	1	1	1.0000	0.0000	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
+Warnings:
+Note	1003	select high_priority 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;
 create table t1 (USR_ID integer not null, MAX_REQ integer not null, constraint PK_SEA_USER primary key (USR_ID)) type=InnoDB;
 insert into t1 values (1, 3);

mysql-test/r/func_if.result

@@ -39,6 +39,25 @@ a
 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
+Warnings:
+Note	1003	select high_priority if((test.t1.u = 1),test.t1.st,(test.t1.st collate _latin1'BINARY')) AS `s` from test.t1 where (test.t1.st like _latin1'%a%') order by if((test.t1.u = 1),test.t1.st,(test.t1.st collate _latin1'BINARY'))
+select nullif(u=0, 'test') from t1;
+nullif(u=0, 'test')
+NULL
+NULL
+NULL
+NULL
+NULL
+1
+1
+explain extended select nullif(u=0, 'test') from t1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	7	
+Warnings:
+Note	1003	select high_priority nullif((test.t1.u = 0),_latin1'test') AS `nullif(u=0, 'test')` from test.t1
 drop table t1;
 create table t1 (num  double(12,2));
 insert into t1 values (144.54);

mysql-test/r/func_in.result

@@ -142,6 +142,11 @@ a	c	c
 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
+Warnings:
+Note	1003	select high_priority 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'latin1_bin')))
 drop table t1;
 select '1.0' in (1,2);
 '1.0' in (1,2)

mysql-test/r/func_math.result

 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
+Warnings:
+Note	1003	select high_priority 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
+Warnings:
+Note	1003	select high_priority 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
+Warnings:
+Note	1003	select high_priority 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
+Warnings:
+Note	1003	select high_priority 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);
 round(5.64,1)	round(5.64,2)	round(5.64,-1)	round(5.64,-2)
 5.6	5.64	10	0
 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
+Warnings:
+Note	1003	select high_priority 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)
 10.000000	10.000000	NULL	NULL	NULL	2.000000	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
+Warnings:
+Note	1003	select high_priority 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)
 10.000000	10.000000	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
+Warnings:
+Note	1003	select high_priority 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)
 3.000000	3.906891	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
+Warnings:
+Note	1003	select high_priority 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)
 2.000000	1.255273	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
+Warnings:
+Note	1003	select high_priority 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)
 10.000000	16.000000
+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
+Warnings:
+Note	1003	select high_priority pow(10,log10(10)) AS `pow(10,log10(10))`,pow(2,4) AS `power(2,4)`
 set @@rand_seed1=10000000,@@rand_seed2=1000000;
 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
+Warnings:
+Note	1003	select high_priority no_cache rand(999999) AS `rand(999999)`,rand() AS `rand()`
 select pi(),sin(pi()/2),cos(pi()/2),abs(tan(pi())),cot(1),asin(1),acos(0),atan(1);
 pi()	sin(pi()/2)	cos(pi()/2)	abs(tan(pi()))	cot(1)	asin(1)	acos(0)	atan(1)
 3.141593	1.000000	0.000000	0.000000	0.64209262	1.570796	1.570796	0.785398
+explain extended select pi(),sin(pi()/2),cos(pi()/2),abs(tan(pi())),cot(1),asin(1),acos(0),atan(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
+Warnings:
+Note	1003	select high_priority pi() AS `pi()`,sin((pi() / 2)) AS `sin(pi()/2)`,cos((pi() / 2)) AS `cos(pi()/2)`,abs(tan(pi())) AS `abs(tan(pi()))`,(1 / tan(1)) AS `cot(1)`,asin(1) AS `asin(1)`,acos(0) AS `acos(0)`,atan(1) AS `atan(1)`
 select degrees(pi()),radians(360);
 degrees(pi())	radians(360)
 180	6.2831853071796
+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
+Warnings:
+Note	1003	select high_priority degrees(pi()) AS `degrees(pi())`,radians(360) AS `radians(360)`

mysql-test/r/func_op.result

 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	1.60	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
+Warnings:
+Note	1003	select high_priority (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
+Warnings:
+Note	1003	select high_priority (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;
 1 << 32	1 << 63	1 << 64	4 >> 2	4 >> 63	1<< 63 >> 60
 4294967296	9223372036854775808	0	1	0	8

mysql-test/r/func_regexp.result

@@ -36,6 +36,11 @@ insert into t1 (xxx) values('this is a test of some long text to see what happen
 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	
+Warnings:
+Note	1003	select high_priority 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 ');
 xxx
 this is a test of some long text to see what happens

mysql-test/r/func_set.result

 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;
 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
+Warnings:
+Note	1003	select high_priority 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 find_in_set("b","a,b,c"),find_in_set("c","a,b,c"),find_in_set("dd","a,bbb,dd"),find_in_set("bbb","a,bbb,dd");
 find_in_set("b","a,b,c")	find_in_set("c","a,b,c")	find_in_set("dd","a,bbb,dd")	find_in_set("bbb","a,bbb,dd")
 2	3	3	2

mysql-test/r/func_str.result

@@ -12,9 +12,15 @@ length('\n\t\r\b\0\_\%\\')
 select bit_length('\n\t\r\b\0\_\%\\');
 bit_length('\n\t\r\b\0\_\%\\')
 80
-select concat('monty',' was here ','again'),length('hello'),char(ascii('h'));
-concat('monty',' was here ','again')	length('hello')	char(ascii('h'))
-monty was here again	5	h
+select char_length('\n\t\r\b\0\_\%\\');
+char_length('\n\t\r\b\0\_\%\\')
+10
+select length(_latin1'\n\t\n\b\0\\_\\%\\');
+length(_latin1'\n\t\n\b\0\\_\\%\\')
+10
+select concat('monty',' was here ','again'),length('hello'),char(ascii('h')),ord('h');
+concat('monty',' was here ','again')	length('hello')	char(ascii('h'))	ord('h')
+monty was here again	5	h	104
 select locate('he','hello'),locate('he','hello',2),locate('lo','hello',2) ;
 locate('he','hello')	locate('he','hello',2)	locate('lo','hello',2)
 1	0	4
@@ -99,6 +105,9 @@ NULL
 select md5('hello');
 md5('hello')
 5d41402abc4b2a76b9719d911017c592
+select crc32("123");
+crc32("123")
+2286445522
 select sha('abc');
 sha('abc')
 a9993e364706816aba3e25717850c26c9cd0d89d
@@ -579,3 +588,8 @@ CONCAT("</a>",RPAD("",(55 - LENGTH(title)),"."))
 NULL
 </a>..........................
 DROP TABLE t1;
+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");
+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
+Warnings:
+Note	1003	select high_priority 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)`,(_latin1'HE' collate _latin1'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'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\t\r\b\0\\_\\%\\') AS `length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n\t\r\b\0\\_\\%\\') AS `bit_length('\n\t\r\b\0\_\%\\')`,bit_length(_latin1'\n\t\r\b\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")`

mysql-test/r/func_system.result

@@ -37,6 +37,11 @@ version()>=_latin1"3.23.29"
 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
+Warnings:
+Note	1003	select high_priority no_cache database() AS `database()`,user() AS `user()`
 create table t1 (version char(40)) select database(), user(), version() as 'version';
 show create table t1;
 Table	Create Table

mysql-test/r/func_test.result

@@ -44,19 +44,47 @@ select -1.49 or -1.49,0.6 or 0.6;
 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
+Warnings:
+Note	1003	select high_priority (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;
 1 XOR 1	1 XOR 0	0 XOR 1	0 XOR 0	NULL XOR 1	1 XOR NULL	0 XOR NULL
 0	1	1	0	NULL	NULL	NULL
 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
+Warnings:
+Note	1003	select high_priority (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
+Warnings:
+Note	1003	select high_priority ((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);
 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 noticed after reading const tables
+Warnings:
+Note	1003	select high_priority test.t1.a AS `a` from test.t1 where (1 xor 1)
+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	
+Warnings:
+Note	1003	select high_priority -(test.t1.a) AS `- a` from test.t1
 drop table t1;
 select 5 between 0 and 10 between 0 and 1,(5 between 0 and 10) between 0 and 1;
 5 between 0 and 10 between 0 and 1	(5 between 0 and 10) between 0 and 1
@@ -73,6 +101,11 @@ _koi8r'a' = _koi8r'A'
 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
+Warnings:
+Note	1003	select high_priority (_koi8r'a' = (_koi8r'A' collate _latin1'koi8r_general_ci')) AS `_koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci`
 select _koi8r'a' = _koi8r'A' COLLATE koi8r_bin;
 _koi8r'a' = _koi8r'A' COLLATE koi8r_bin
 0

mysql-test/r/func_time.result

@@ -486,3 +486,8 @@ strcmp(date_format(utc_timestamp(),"%Y-%m-%d"), utc_date())=0
 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
+Warnings:
+Note	1003	select high_priority 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(to_days(curdate())) - weekday(to_days(now()))) AS `weekday(curdate())-weekday(now())`,dayname(to_days(_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)`

mysql-test/r/group_by.result

@@ -284,9 +284,11 @@ select spid,count(*) from t1 where spid between 1 and 2 group by spid desc;
 spid	count(*)
 2	2
 1	1
-explain select sql_big_result spid,sum(userid) from t1 group by spid desc;
+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
+Warnings:
+Note	1003	select high_priority 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;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	8	

mysql-test/r/having.result

@@ -8,6 +8,11 @@ b
 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
+Warnings:
+Note	1003	select high_priority count(test.t1.a) AS `b` from test.t1 where (test.t1.a = 0) having (count(test.t1.a) >= 0)
 drop table t1;
 CREATE TABLE t1 (
 raw_id int(10) NOT NULL default '0',

mysql-test/r/insert_update.result

@@ -56,4 +56,14 @@ a	b	c	VALUES(a)
 5	0	30	NULL
 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	
+Warnings:
+Note	1003	select high_priority 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
+Warnings:
+Note	1003	select high_priority test.t1.a AS `a`,test.t1.b AS `b`,test.t1.c AS `c` from test.t1
 DROP TABLE t1;

mysql-test/r/null.result

@@ -2,6 +2,11 @@ drop table if exists t1;
 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;
 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
+Warnings:
+Note	1003	select high_priority 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;
 1 | NULL	1 & NULL	1+NULL	1-NULL
 NULL	NULL	NULL	NULL
@@ -23,6 +28,11 @@ field(NULL,"a","b","c")
 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;
 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
+Warnings:
+Note	1003	select high_priority (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;
 NULL AND NULL	1 AND NULL	NULL AND 1	NULL OR NULL	0 OR NULL	NULL OR 0
 NULL	NULL	NULL	NULL	NULL	NULL
@@ -35,6 +45,11 @@ NULL AND 0	0 and NULL
 select inet_ntoa(null),inet_aton(null),inet_aton("122.256"),inet_aton("122.226."),inet_aton("");
 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
+Warnings:
+Note	1003	select high_priority 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);
 insert into t1 values (null);
 select * from t1 where x != 0;

mysql-test/r/olap.result

@@ -81,9 +81,11 @@ TV	2	2000	200
 TV	2	NULL	200
 TV	NULL	NULL	600
 NULL	NULL	NULL	7785
-explain select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup;
+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 temporary; Using filesort
+Warnings:
+Note	1003	select high_priority 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;
 product	country_id	sum(profit)
 TV	1	400

mysql-test/r/query_cache.result

@@ -300,6 +300,11 @@ select USER() from t1;
 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
+Warnings:
+Note	1003	select high_priority no_cache benchmark(1,1) AS `benchmark(1,1)` from test.t1
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	0

mysql-test/r/row.result

@@ -40,6 +40,11 @@ ERROR 21000: Operand should contain 2 column(s)
 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
+Warnings:
+Note	1003	select high_priority ((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);
 (1,2,3)=(0,NULL,3)
 0

mysql-test/r/rpl000001.result

@@ -40,10 +40,20 @@ create table t1(n int);
 select get_lock("hold_slave",10);
 get_lock("hold_slave",10)
 1
+explain extended select get_lock("hold_slave",10);
+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
+Warnings:
+Note	1003	select high_priority no_cache get_lock(_latin1'hold_slave',10) AS `get_lock("hold_slave",10)`
 start slave;
 select release_lock("hold_slave");
 release_lock("hold_slave")
 1
+explain extended select release_lock("hold_slave");
+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
+Warnings:
+Note	1003	select high_priority no_cache release_lock(_latin1'hold_slave') AS `release_lock("hold_slave")`
 unlock tables;
 create table t2(id int);
 insert into t2 values(connection_id());

mysql-test/r/rpl_get_lock.result

@@ -18,9 +18,14 @@ get_lock("lock",3)
 select * from t1;
 n
 1
-select is_free_lock("lock");
-is_free_lock("lock")
-0
+select is_free_lock("lock"), is_used_lock("lock");
+is_free_lock("lock")	is_used_lock("lock")
+0	6
+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
+Warnings:
+Note	1003	select high_priority 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");
 is_free_lock("lock2")
 1

mysql-test/r/rpl_master_pos_wait.result

@@ -7,6 +7,11 @@ start slave;
 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
+Warnings:
+Note	1003	select high_priority 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);
 stop slave sql_thread;
 master_pos_wait('master-bin.999999',0)

mysql-test/r/select.result

@@ -1466,6 +1466,11 @@ companynr	count(*)
 select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>"";
 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
+Warnings:
+Note	1003	select high_priority 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;
 companynr	count(*)	min(fld4)	max(fld4)	sum(fld1)	avg(fld1)	std(fld1)	variance(fld1)
 00	82	Anthony	windmills	10355753	126289.6707	115550.9757	13352027981.7087

mysql-test/r/type_blob.result

@@ -492,6 +492,14 @@ collation(load_file('../../std_data/words.dat')),
 coercibility(load_file('../../std_data/words.dat'));
 charset(load_file('../../std_data/words.dat'))	collation(load_file('../../std_data/words.dat'))	coercibility(load_file('../../std_data/words.dat'))
 binary	binary	3
+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
+Warnings:
+Note	1003	select high_priority 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;
 select if(imagem is null, "ERROR", "OK"),length(imagem) from t1 where id = 1;
 if(imagem is null, "ERROR", "OK")	length(imagem)

mysql-test/r/union.result

@@ -86,10 +86,12 @@ a	b
 1	a
 (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 SELECT's can not be used  in global ORDER clause
-explain (select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1) order by b desc;
+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
+Warnings:
+Note	1003	(select high_priority 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;
 a	b
 1	a
@@ -463,10 +465,12 @@ create table t1 (a int not null primary key auto_increment, b int, key(b));
 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 (select * from t1 where a=1) union (select * from t2 where a=1);
+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	
+Warnings:
+Note	1003	(select high_priority 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);
 a	b
 1	10

mysql-test/r/varbinary.result

@@ -11,9 +11,11 @@ x'31'	X'ffff'+0
 create table t1 (ID int(8) unsigned zerofill not null auto_increment,UNIQ bigint(21) unsigned zerofill not null,primary key (ID),unique (UNIQ) );
 insert into t1 set UNIQ=0x38afba1d73e6a18a;
 insert into t1 set UNIQ=123;
-explain select * from t1 where UNIQ=0x38afba1d73e6a18a;
+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	
+Warnings:
+Note	1003	select high_priority test.t1.ID AS `ID`,test.t1.UNIQ AS `UNIQ` from test.t1 where (test.t1.UNIQ = 4084688022709641610)
 drop table t1;
 select x'hello';
 ERROR 42000: You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near 'x'hello'' at line 1

mysql-test/r/variables.result

@@ -22,6 +22,11 @@ NULL	NULL	NULL	NULL
 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
+Warnings:
+Note	1003	select high_priority no_cache (@t1:=((@t2:=1) + (@t3:=4))) AS `@t1:=(@t2:=1)+@t3:=4`,(@t1) AS `@t1`,(@t2) AS `@t2`,(@t3) AS `@t3`
 select @t5;
 @t5
 1.23456
@@ -76,9 +81,19 @@ select @@VERSION=version();
 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
+Warnings:
+Note	1003	select high_priority 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
+Warnings:
+Note	1003	select high_priority no_cache 345 AS `@@IDENTITY`,345 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";
 set global concurrent_insert=ON;
 show variables like 'concurrent_insert';

mysql-test/t/auto_increment.test

@@ -80,6 +80,7 @@ create table t1 (i tinyint unsigned not null auto_increment primary key);
 insert into t1 set i = 254;
 insert into t1 set i = null;
 select last_insert_id();
+explain extended select last_insert_id();
 --error 1062
 insert into t1 set i = 254;
 select last_insert_id();

mysql-test/t/bench_count_distinct.test

@@ -16,4 +16,5 @@ while ($1)
 }
 enable_query_log;
 select count(distinct n) from t1;
+explain extended select count(distinct n) from t1;
 drop table t1;

mysql-test/t/case.test

@@ -14,6 +14,7 @@ select CASE "b" when "a" then 1 when binary "B" then 2 WHEN "b" then "ok" END;
 select CASE concat("a","b") when concat("ab","") then "a" when "b" then "b" end;
 select CASE when 1=0 then "true" else "false" END;
 select CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END;
+explain extended select 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;
 select (CASE "two" when "one" then "1" WHEN "two" then "2" END) | 0;
 select (CASE "two" when "one" then 1.00 WHEN "two" then 2.00 END) +0.0;
@@ -30,6 +31,7 @@ select case when 1<0 then "TRUE" else "FALSE" END;
 create table t1 (a int);
 insert into t1 values(1),(2),(3),(4);
 select case a when 1 then 2 when 2 then 3 else 0 end as fcase, count(*) from t1 group by fcase;
+explain extended select case a when 1 then 2 when 2 then 3 else 0 end as fcase, count(*) from t1 group by fcase;
 select case a when 1 then "one" when 2 then "two" else "nothing" end as fcase, count(*) from t1 group by fcase;
 drop table t1;
 
@@ -98,5 +100,9 @@ CREATE TABLE t1 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');
+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');
 SHOW CREATE TABLE t1;
 DROP TABLE t1;

mysql-test/t/cast.test

@@ -8,6 +8,7 @@ select CONVERT('-1',UNSIGNED);
 select cast(-5 as unsigned) | 1, cast(-5 as unsigned) & -1;
 select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
 select ~5, cast(~5 as signed);
+explain extended select ~5, cast(~5 as signed);
 select cast(5 as unsigned) -6.0;
 select cast("A" as binary) = "a", cast(BINARY "a" as CHAR) = "A";
 select cast("2001-1-1" as DATE), cast("2001-1-1" as DATETIME);

mysql-test/t/ctype_collate.test

@@ -139,6 +139,7 @@ SHOW FIELDS FROM  t1;
 SET CHARACTER SET 'latin1';
 SHOW VARIABLES LIKE 'character_set_client';
 SELECT charset('a'),collation('a'),coercibility('a'),'a'='A';
+explain extended SELECT charset('a'),collation('a'),coercibility('a'),'a'='A';
 
 SET CHARACTER SET koi8r;
 SHOW VARIABLES LIKE 'collation_client';

mysql-test/t/ctype_many.test

@@ -147,6 +147,12 @@ UPDATE t1 SET utf8_f=CONVERT(koi8_ru_f USING utf8);
 SET CHARACTER SET koi8r;
 SELECT * FROM t1;
 
+#
+# codecovarage for Item_func_conv_charset3
+#
+select CONVERT(koi8_ru_f, 'cp1251_general_ci', 'utf8_general_ci'), comment from t1;
+explain extended select CONVERT(koi8_ru_f, 'cp1251_general_ci', 'utf8_general_ci'), comment from t1;
+
 ALTER TABLE t1 ADD bin_f CHAR(32) BYTE NOT NULL;
 UPDATE t1 SET bin_f=koi8_ru_f;
 SELECT COUNT(DISTINCT bin_f),COUNT(DISTINCT koi8_ru_f),COUNT(DISTINCT utf8_f) FROM t1;

mysql-test/t/ctype_utf8.test

@@ -23,6 +23,8 @@ select locate(_utf8 0xD0B1, _utf8 0xD0B0D091D0B2);
 select locate(_utf8 0xD091, _utf8 0xD0B0D0B1D0B2 collate utf8_bin);
 select locate(_utf8 0xD0B1, _utf8 0xD0B0D091D0B2 collate utf8_bin);
 
+select length(_utf8 0xD0B1), bit_length(_utf8 0xD0B1), char_length(_utf8 0xD0B1);
+
 select 'a' like 'a';
 select 'A' like 'a';
 select 'A' like 'a' collate utf8_bin;

mysql-test/t/date_formats.test

@@ -80,3 +80,4 @@ select get_format(DATE, 'USA') as a;
 select get_format(TIME, 'internal') as a;
 select get_format(DATETIME, 'eur') as a;
 
+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");

mysql-test/t/fulltext.test

@@ -16,6 +16,7 @@ INSERT INTO t1 VALUES('MySQL has now support', 'for full-text search'),
 # nl search
 
 select * from t1 where MATCH(a,b) AGAINST ("collections");
+explain extended select * from t1 where MATCH(a,b) AGAINST ("collections");
 select * from t1 where MATCH(a,b) AGAINST ("indexes");
 select * from t1 where MATCH(a,b) AGAINST ("indexes collections");
 select * from t1 where MATCH(a,b) AGAINST ("only");
@@ -42,6 +43,7 @@ explain select * from t1 where MATCH(a,b) AGAINST ("collections")>0 and a like '
 # boolean search
 
 select * from t1 where MATCH(a,b) AGAINST("support -collections" IN BOOLEAN MODE);
+explain extended select * from t1 where MATCH(a,b) AGAINST("support -collections" IN BOOLEAN MODE);
 select * from t1 where MATCH(a,b) AGAINST("support  collections" IN BOOLEAN MODE);
 select * from t1 where MATCH(a,b) AGAINST("support +collections" IN BOOLEAN MODE);
 select * from t1 where MATCH(a,b) AGAINST("sear*" IN BOOLEAN MODE);

mysql-test/t/func_compress.test

@@ -7,7 +7,9 @@ select @test_compress_string:='string for test compress function aaaaaaaaaaaaaaa
 select length(@test_compress_string);
 
 select uncompress(compress(@test_compress_string));
+explain extended select uncompress(compress(@test_compress_string));
 select uncompressed_length(compress(@test_compress_string))=length(@test_compress_string);
+explain extended select uncompressed_length(compress(@test_compress_string))=length(@test_compress_string);
 select uncompressed_length(compress(@test_compress_string));
 select length(compress(@test_compress_string))<length(@test_compress_string);
 

mysql-test/t/func_default.test

+--disable_warnings
+drop table if exists t1,t2;
+--enable_warnings
+
+
+create table t1(str varchar(10) default 'def',strnull varchar(10),intg int default '10',rel double default '3.14');
+
+insert into t1 values ('','',0,0.0);
+select default(str), default(strnull), default(intg), default(rel) from t1;
+explain extended select default(str), default(strnull), default(intg), default(rel) from t1;
+select * from t1 where str <> default(str);
+explain select * from t1 where str <> default(str);
+
+#TODO: uncomment when bug will be fixed
+#create table t2 select default(str), default(strnull), default(intg), default(rel) from t1;
+#show create table from t1;
+#insert into t2 select select default(str), default(strnull), default(intg), default(rel) from t1;
+
+drop table t1;
\ No newline at end of file

mysql-test/t/func_gconcat.test

@@ -18,6 +18,7 @@ insert into t1 values (3,9,"D","c");
 
 # Test of MySQL simple request
 select grp,group_concat(c) from t1 group by grp;
+explain extended select grp,group_concat(c) from t1 group by grp;
 select grp,group_concat(a,c) from t1 group by grp;
 select grp,group_concat("(",a,":",c,")") from t1 group by grp;
 
@@ -33,9 +34,11 @@ select grp,group_concat(c order by 1) from t1 group by grp;
 select grp,group_concat(c order by "c") from t1 group by grp;
 select grp,group_concat(distinct c order by c) from t1 group by grp;
 select grp,group_concat(distinct c order by c desc) from t1 group by grp;
+explain extended select grp,group_concat(distinct c order by c desc) from t1 group by grp;
 select grp,group_concat(c order by c separator ",") from t1 group by grp;
 select grp,group_concat(c order by c desc separator ",") from t1 group by grp;
 select grp,group_concat(distinct c order by c separator ",") from t1 group by grp;
+explain extended select grp,group_concat(distinct c order by c separator ",") from t1 group by grp;
 select grp,group_concat(distinct c order by c desc separator ",") from t1 group by grp;
 
 # Test of SQL_LIST objects

mysql-test/t/func_group.test

@@ -346,7 +346,8 @@ select a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b)
 select SQL_BIG_RESULT a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
 insert into t1 values (3,1);
 select a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
-select SQL_BIG_RESULT a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
+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;
+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;
 drop table t1;
 --disable_warnings
 create table t1 (USR_ID integer not null, MAX_REQ integer not null, constraint PK_SEA_USER primary key (USR_ID)) type=InnoDB;

mysql-test/t/func_if.test

@@ -20,6 +20,13 @@ select if(1,st,st) s from t1 order by s;
 select if(u=1,st,st) s from t1 order by s;
 select if(u=1,binary st,st) s from t1 order by s;
 select if(u=1,st,binary st) s from t1 where st like "%a%" order by s;
+explain extended select if(u=1,st,binary st) s from t1 where st like "%a%" order by s;
+
+#
+# NULLIF test
+#
+select nullif(u=0, 'test') from t1;
+explain extended select nullif(u=0, 'test') from t1;
 drop table t1;
 
 #

mysql-test/t/func_in.test

@@ -72,6 +72,7 @@ select * from t1 where a in ('a');
 select * from t1 where 'a' collate latin1_general_ci in (a,b,c);
 select * from t1 where 'a' collate latin1_bin in (a,b,c);
 select * from t1 where 'a' in (a,b,c collate latin1_bin);
+explain extended select * from t1 where 'a' in (a,b,c collate latin1_bin);
 drop table t1;
 
 select '1.0' in (1,2);

mysql-test/t/func_math.test

@@ -3,17 +3,30 @@
 #
 
 select floor(5.5),floor(-5.5);
+explain extended select floor(5.5),floor(-5.5);
 select ceiling(5.5),ceiling(-5.5);
+explain extended select ceiling(5.5),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);
+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);
 select round(5.5),round(-5.5);
+explain extended select round(5.5),round(-5.5);
 select round(5.64,1),round(5.64,2),round(5.64,-1),round(5.64,-2);
 select abs(-10), sign(-5), sign(5), sign(0);
+explain extended select abs(-10), sign(-5), sign(5), 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);
+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);
 select ln(exp(10)),exp(ln(sqrt(10))*2),ln(-1),ln(0),ln(NULL);
+explain extended select ln(exp(10)),exp(ln(sqrt(10))*2),ln(-1),ln(0),ln(NULL);
 select log2(8),log2(15),log2(-2),log2(0),log2(NULL);
+explain extended select log2(8),log2(15),log2(-2),log2(0),log2(NULL);
 select log10(100),log10(18),log10(-4),log10(0),log10(NULL);
+explain extended select log10(100),log10(18),log10(-4),log10(0),log10(NULL);
 select pow(10,log10(10)),power(2,4);
+explain extended select pow(10,log10(10)),power(2,4);
 set @@rand_seed1=10000000,@@rand_seed2=1000000;
 select rand(999999),rand();
+explain extended select rand(999999),rand();
 select pi(),sin(pi()/2),cos(pi()/2),abs(tan(pi())),cot(1),asin(1),acos(0),atan(1);
+explain extended select pi(),sin(pi()/2),cos(pi()/2),abs(tan(pi())),cot(1),asin(1),acos(0),atan(1);
 select degrees(pi()),radians(360);
+explain extended select degrees(pi()),radians(360);

mysql-test/t/func_op.test

@@ -3,5 +3,7 @@
 # Simple operands and arithmetic grouping
 
 select 1+1,1-1,1+1*2,8/5,8%5,mod(8,5),mod(8,5)|0,-(1+1)*-2;
+explain extended select 1+1,1-1,1+1*2,8/5,8%5,mod(8,5),mod(8,5)|0,-(1+1)*-2;
 select 1 | (1+1),5 & 3,bit_count(7) ;
+explain extended select 1 | (1+1),5 & 3,bit_count(7) ;
 select 1 << 32,1 << 63, 1 << 64, 4 >> 2, 4 >> 63, 1<< 63 >> 60;

mysql-test/t/func_regexp.test

@@ -36,6 +36,7 @@ drop table t1;
 create table t1 (xxx char(128));
 insert into t1 (xxx) values('this is a test of some long text to see what happens');
 select * from t1 where xxx regexp('is a test of some long text to');
+explain extended select * from t1 where xxx regexp('is a test of some long text to');
 select * from t1 where xxx regexp('is a test of some long text to ');
 select * from t1 where xxx regexp('is a test of some long text to s');
 select * from t1 where xxx regexp('is a test of some long text to se');

mysql-test/t/func_set.test

@@ -3,6 +3,7 @@
 #
 
 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;
+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;
 select find_in_set("b","a,b,c"),find_in_set("c","a,b,c"),find_in_set("dd","a,bbb,dd"),find_in_set("bbb","a,bbb,dd");
 select find_in_set("d","a,b,c"),find_in_set("dd","a,bbb,d"),find_in_set("bb","a,bbb,dd");
 select make_set(0,'a','b','c'),make_set(-1,'a','b','c'),make_set(1,'a','b','c'),make_set(2,'a','b','c'),make_set(1+2,concat('a','b'),'c');

mysql-test/t/func_str.test

@@ -14,7 +14,9 @@ select 'hello',"'hello'",'""hello""','''h''e''l''l''o''',"hel""lo",'hel\'lo';
 select 'hello' 'monty';
 select length('\n\t\r\b\0\_\%\\');
 select bit_length('\n\t\r\b\0\_\%\\');
-select concat('monty',' was here ','again'),length('hello'),char(ascii('h'));
+select char_length('\n\t\r\b\0\_\%\\');
+select length(_latin1'\n\t\n\b\0\\_\\%\\');
+select concat('monty',' was here ','again'),length('hello'),char(ascii('h')),ord('h');
 select locate('he','hello'),locate('he','hello',2),locate('lo','hello',2) ;
 select instr('hello','HE'), instr('hello',binary 'HE'), instr(binary 'hello','HE'); 
 select position(binary 'll' in 'hello'),position('a' in binary 'hello');
@@ -46,6 +48,7 @@ select null sounds like 'null';
 select 'null' sounds like null;
 select null sounds like null;
 select md5('hello');
+select crc32("123");
 select sha('abc');
 select sha1('abc');
 select aes_decrypt(aes_encrypt('abc','1'),'1');
@@ -336,3 +339,5 @@ INSERT INTO t1 VALUES ('Congress reconvenes in September to debate welfare and a
 INSERT INTO t1 VALUES ('House passes the CAREERS bill');
 SELECT CONCAT("</a>",RPAD("",(55 - LENGTH(title)),".")) from t1;
 DROP TABLE t1;
+
+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"); 

mysql-test/t/func_system.test

@@ -17,6 +17,7 @@ select version()>="3.23.29";
 select version()>=_utf8"3.23.29";
 select version()>=_latin1"3.23.29";
 select charset(version());
+explain extended select database(), user();
 
 create table t1 (version char(40)) select database(), user(), version() as 'version';
 show create table t1;

mysql-test/t/func_test.test

@@ -19,13 +19,19 @@ select 'b' between 'a' and 'c', 'B' between 'a' and 'c';
 select 2 in (3,2,5,9,5,1),"monty" in ("david","monty","allan"), 1.2 in (1.4,1.2,1.0);
 select -1.49 or -1.49,0.6 or 0.6;
 select 3 ^ 11, 1 ^ 1, 1 ^ 0, 1 ^ NULL, NULL ^ 1;
+explain extended select 3 ^ 11, 1 ^ 1, 1 ^ 0, 1 ^ NULL, NULL ^ 1;
 select 1 XOR 1, 1 XOR 0, 0 XOR 1, 0 XOR 0, NULL XOR 1, 1 XOR NULL, 0 XOR NULL;
 select 10 % 7, 10 mod 7, 10 div 3;
+explain extended select 10 % 7, 10 mod 7, 10 div 3;
 select (1 << 64)-1, ((1 << 64)-1) DIV 1, ((1 << 64)-1) DIV 2;
+explain extended select (1 << 64)-1, ((1 << 64)-1) DIV 1, ((1 << 64)-1) DIV 2;
 
 create table t1 (a int);
 insert t1 values (1);
 select * from t1 where 1 xor 1;
+explain extended select * from t1 where 1 xor 1;
+select - a from t1;
+explain extended select - a from t1;
 drop table t1;
 
 #
@@ -41,6 +47,7 @@ select 1 and 0 or 2, 2 or 1 and 0;
 #
 select _koi8r'a' = _koi8r'A';
 select _koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci;
+explain extended select _koi8r'a' = _koi8r'A' COLLATE koi8r_general_ci;
 select _koi8r'a' = _koi8r'A' COLLATE koi8r_bin;
 select _koi8r'a' COLLATE koi8r_general_ci = _koi8r'A';
 select _koi8r'a' COLLATE koi8r_bin = _koi8r'A';

mysql-test/t/func_time.test

@@ -7,6 +7,7 @@ drop table if exists t1,t2,t3;
 
 select from_days(to_days("960101")),to_days(960201)-to_days("19960101"),to_days(date_add(curdate(), interval 1 day))-to_days(curdate()),weekday("1997-11-29");
 select period_add("9602",-12),period_diff(199505,"9404") ;
+
 select now()-now(),weekday(curdate())-weekday(now()),unix_timestamp()-unix_timestamp(now());
 select from_unixtime(unix_timestamp("1994-03-02 10:11:12")),from_unixtime(unix_timestamp("1994-03-02 10:11:12"),"%Y-%m-%d %h:%i:%s"),from_unixtime(unix_timestamp("1994-03-02 10:11:12"))+0;
 select sec_to_time(9001),sec_to_time(9001)+0,time_to_sec("15:12:22"),
@@ -231,3 +232,5 @@ select strcmp(date_format(date_sub(localtimestamp(), interval 3 hour),"%Y-%m-%d"
 select strcmp(date_format(utc_timestamp(),"%T"), utc_time())=0;
 select strcmp(date_format(utc_timestamp(),"%Y-%m-%d"), utc_date())=0;
 select strcmp(concat(utc_date(),' ',utc_time()),utc_timestamp())=0;
+
+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);

mysql-test/t/group_by.test

@@ -260,7 +260,7 @@ explain select spid,count(*) from t1 where spid between 1 and 2 group by spid;
 explain select spid,count(*) from t1 where spid between 1 and 2 group by spid order by null;
 select spid,count(*) from t1 where spid between 1 and 2 group by spid;
 select spid,count(*) from t1 where spid between 1 and 2 group by spid desc;
-explain select sql_big_result spid,sum(userid) from t1 group by spid desc;
+explain extended select sql_big_result spid,sum(userid) from t1 group by spid desc;
 explain select sql_big_result spid,sum(userid) from t1 group by spid desc order by null;
 select sql_big_result spid,sum(userid) from t1 group by spid desc;
 explain select sql_big_result score,count(*) from t1 group by score desc;

mysql-test/t/having.test

@@ -10,6 +10,7 @@ select count(a) as b from t1 where a=0 having b > 0;
 insert into t1 values (null);
 select count(a) as b from t1 where a=0 having b > 0;
 select count(a) as b from t1 where a=0 having b >=0;
+explain extended select count(a) as b from t1 where a=0 having b >=0;
 drop table t1; 
 
 #

mysql-test/t/insert_update.test

@@ -23,4 +23,6 @@ INSERT t1 SET a=5 ON DUPLICATE KEY UPDATE b=0;
 SELECT * FROM t1;
 INSERT t1 VALUES (2,1,11), (7,4,40) ON DUPLICATE KEY UPDATE c=c+VALUES(a);
 SELECT *, VALUES(a) FROM t1;
+explain extended SELECT *, VALUES(a) FROM t1;
+explain extended select * from t1 where values(a);
 DROP TABLE t1;

mysql-test/t/null.test

@@ -8,6 +8,7 @@ drop table if exists t1;
 #
 
 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;
+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;
 select 1 | NULL,1 & NULL,1+NULL,1-NULL;
 select NULL=NULL,NULL<>NULL,IFNULL(NULL,1.1)+0,IFNULL(NULL,1) | 0;
 select strcmp("a",NULL),(1<NULL)+0.0,NULL regexp "a",null like "a%","a%" like null;
@@ -15,10 +16,12 @@ select concat("a",NULL),replace(NULL,"a","b"),replace("string","i",NULL),replace
 select repeat("a",0),repeat("ab",5+5),repeat("ab",-1),reverse(NULL);
 select field(NULL,"a","b","c");
 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;
+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;
 SELECT NULL AND NULL, 1 AND NULL, NULL AND 1, NULL OR NULL, 0 OR NULL, NULL OR 0;
 SELECT (NULL OR NULL) IS NULL;
 select NULL AND 0, 0 and NULL;
 select inet_ntoa(null),inet_aton(null),inet_aton("122.256"),inet_aton("122.226."),inet_aton("");
+explain extended select inet_ntoa(null),inet_aton(null),inet_aton("122.256"),inet_aton("122.226."),inet_aton("");
 
 create table t1 (x int);
 insert into t1 values (null);

mysql-test/t/olap.test

@@ -32,7 +32,7 @@ select product, sum(profit),avg(profit) from t1 group by product with rollup;
 # Sub totals
 select product, country_id , year, sum(profit) from t1 group by product, country_id, year;
 select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup;
-explain select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup;
+explain extended select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup;
 select product, country_id , sum(profit) from t1 group by product desc, country_id with rollup;
 
 # limit

mysql-test/t/query_cache.test

@@ -184,6 +184,7 @@ select RAND() from t1;
 select UNIX_TIMESTAMP() from t1;
 select USER() from t1;
 select benchmark(1,1) from t1;
+explain extended select benchmark(1,1) from t1;
 show status like "Qcache_queries_in_cache";
 #
 # Tests when the cache is filled

mysql-test/t/row.test

@@ -18,6 +18,7 @@ select (1,2,(3,4)) IN ((3,2,(3,4)), (1,2,(3,4)));
 -- error 1240
 select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,4));
 select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)));
+explain extended select 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);
 SELECT (1,2,3)=(1,NULL,3);

mysql-test/t/rpl000001.test

@@ -62,10 +62,12 @@ enable_query_log;
 # Try to cause a large relay log lag on the slave 
 connection slave;
 select get_lock("hold_slave",10);
+explain extended select get_lock("hold_slave",10);
 start slave;
 #hope this is long enough for I/O thread to fetch over 16K relay log data
 sleep 3;
 select release_lock("hold_slave");
+explain extended select release_lock("hold_slave");
 unlock tables;
 
 connection master;

mysql-test/t/rpl_get_lock.test

@@ -5,6 +5,7 @@ insert into t1 values(get_lock("lock",2));
 dirty_close master;
 connection master1;
 select get_lock("lock",2);
+
 select release_lock("lock");
 #ignore 
 disable_query_log;
@@ -21,7 +22,8 @@ connection slave;
 sync_with_master;
 select get_lock("lock",3);
 select * from t1;
-select is_free_lock("lock");
+select is_free_lock("lock"), is_used_lock("lock");
+explain extended select is_free_lock("lock"), is_used_lock("lock");
 # Check lock functions
 select is_free_lock("lock2");
 select is_free_lock(NULL);

mysql-test/t/rpl_master_pos_wait.test

@@ -7,6 +7,7 @@ sync_with_master;
 # Ask for a master log that has certainly not been reached yet
 # timeout= 2 seconds
 select master_pos_wait('master-bin.999999',0,2);
+explain extended select master_pos_wait('master-bin.999999',0,2);
 # Testcase for bug 651 (master_pos_wait() hangs if slave idle and STOP SLAVE).
 send select master_pos_wait('master-bin.999999',0);
 connection slave1;

mysql-test/t/select.test

@@ -1596,6 +1596,7 @@ select count(*) from t1;
 select companynr,count(*),sum(fld1) from t2 group by companynr;
 select companynr,count(*) from t2 group by companynr order by companynr desc limit 5;
 select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>"";
+explain extended select count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 where companynr = 34 and fld4<>"";
 select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 group by companynr limit 3;
 select companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10;
 select /*! SQL_SMALL_RESULT */ companynr,t2nr,count(price),sum(price),min(price),max(price),avg(price) from t3 where companynr = 37 group by companynr,t2nr limit 10;

mysql-test/t/type_blob.test

@@ -298,6 +298,10 @@ select
   charset(load_file('../../std_data/words.dat')),
   collation(load_file('../../std_data/words.dat')),
   coercibility(load_file('../../std_data/words.dat'));
+explain extended select 
+  charset(load_file('../../std_data/words.dat')),
+  collation(load_file('../../std_data/words.dat')),
+  coercibility(load_file('../../std_data/words.dat'));
 update t1 set imagem=load_file('../../std_data/words.dat') where id=1;
 select if(imagem is null, "ERROR", "OK"),length(imagem) from t1 where id = 1;
 drop table t1;

mysql-test/t/union.test

@@ -25,7 +25,7 @@ select 't1',b,count(*) from t1 group by b UNION select 't2',b,count(*) from t2 g
 (select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1) order by b desc;
 --error 1249
 (select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1) order by t1.b;
-explain (select a,b from t1 limit 2)  union all (select a,b from t2 order by a limit 1) order by b desc;
+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;
 (select sql_calc_found_rows  a,b from t1 limit 2)  union all (select a,b from t2 order by a) limit 2;
 select found_rows();
 select sql_calc_found_rows  a,b from t1  union all select a,b from t2 limit 2;
@@ -275,7 +275,7 @@ 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 (select * from t1 where a=1) union (select * from t2 where a=1);
+explain extended (select * from t1 where a=1) union (select * from t2 where a=1);
 (select * from t1 where a=5) union (select * from t2 where a=1);
 (select * from t1 where a=5 and a=6) union (select * from t2 where a=1);
 (select t1.a,t1.b from t1,t2 where t1.a=5) union (select * from t2 where a=1);

mysql-test/t/varbinary.test

@@ -18,7 +18,7 @@ select x'31',X'ffff'+0;
 create table t1 (ID int(8) unsigned zerofill not null auto_increment,UNIQ bigint(21) unsigned zerofill not null,primary key (ID),unique (UNIQ) );
 insert into t1 set UNIQ=0x38afba1d73e6a18a;
 insert into t1 set UNIQ=123; 
-explain select * from t1 where UNIQ=0x38afba1d73e6a18a;
+explain extended select * from t1 where UNIQ=0x38afba1d73e6a18a;
 drop table t1;
 
 #

mysql-test/t/variables.test

@@ -16,6 +16,7 @@ select @test_int,@test_double,@test_string,@test_string2;
 set @test_int=null,@test_double=null,@test_string=null,@test_string2=null;
 select @test_int,@test_double,@test_string,@test_string2;
 select @t1:=(@t2:=1)+@t3:=4,@t1,@t2,@t3;
+explain extended select @t1:=(@t2:=1)+@t3:=4,@t1,@t2,@t3;
 select @t5;
 
 #
@@ -52,7 +53,9 @@ select @@local.max_join_size, @@global.max_join_size;
 select @@identity,  length(@@version)>0;
 select @@VERSION=version();
 select last_insert_id(345);
+explain extended select last_insert_id(345);
 select @@IDENTITY,last_insert_id(), @@identity;
+explain extended select @@IDENTITY,last_insert_id(), @@identity;
 
 set big_tables=OFF, big_tables=ON, big_tables=0, big_tables=1, big_tables="OFF", big_tables="ON";
 

sql/item.cc

@@ -87,6 +87,19 @@ Item::Item(THD *c_thd, Item &item):
   thd->free_list= this;
 }
 
+
+void Item::print_item_w_name(String *str)
+{
+  print(str);
+  if (name)
+  {
+    str->append(" AS `", 5);
+    str->append(name);
+    str->append('`');
+  }
+}
+
+
 // Constructor used by Item_field & Item_ref (see Item comment)
 Item_ident::Item_ident(THD *thd, Item_ident &item):
   Item(thd, item),
@@ -422,6 +435,7 @@ bool Item_field::eq(const Item *item, bool binary_cmp) const
 						    db_name))))));
 }
 
+
 table_map Item_field::used_tables() const
 {
   if (field->table->const_table)
@@ -429,6 +443,7 @@ table_map Item_field::used_tables() const
   return (depended_from ? OUTER_REF_TABLE_BIT : field->table->map);
 }
 
+
 Item *Item_field::get_tmp_table_item(THD *thd)
 {
   Item_field *new_item= new Item_field(thd, *this);
@@ -437,6 +452,7 @@ Item *Item_field::get_tmp_table_item(THD *thd)
   return new_item;
 }
 
+
 String *Item_int::val_str(String *str)
 {
   str->set(value, default_charset());
@@ -445,28 +461,24 @@ String *Item_int::val_str(String *str)
 
 void Item_int::print(String *str)
 {
-  if (!name)
-  {
-    str_value.set(value, default_charset());
-    name=str_value.c_ptr();
-  }
-  str->append(name);
+  // latin1 is good enough for numbers
+  str_value.set(value, &my_charset_latin1);
+  str->append(str_value);
 }
 
+
 String *Item_uint::val_str(String *str)
 {
   str->set((ulonglong) value, default_charset());
   return str;
 }
 
+
 void Item_uint::print(String *str)
 {
-  if (!name)
-  {
-    str_value.set((ulonglong) value, default_charset());
-    name=str_value.c_ptr();
-  }
-  str->append(name);
+  // latin1 is good enough for numbers
+  str_value.set((ulonglong) value, default_charset());
+  str->append(str_value);
 }
 
 
@@ -476,10 +488,46 @@ String *Item_real::val_str(String *str)
   return str;
 }
 
+
 void Item_string::print(String *str)
 {
+  str->append('_');
+  str->append(collation.collation->csname);
   str->append('\'');
-  str->append(full_name());
+  char *st= (char*)str_value.ptr(), *end= st+str_value.length();
+  for(; st < end; st++)
+  {
+    uchar c= *st;
+    switch (c)
+    {
+    case '\\':
+      str->append("\\\\", 2);
+      break;
+    case '\0':
+      str->append("\\0", 2);
+      break;
+    case '\'':
+      str->append("\\'", 2);
+      break;
+    case '\n':
+      str->append("\\n", 2);
+      break;
+    case '\r':
+      str->append("\\r", 2);
+      break;
+    case '\t':
+      str->append("\\t", 2);
+      break;
+    case '\b':
+      str->append("\\b", 2);
+      break;
+    case 26: //Ctrl-Z
+      str->append("\\z", 2);
+      break;
+    default:
+      str->append(c);
+    }
+  }
   str->append('\'');
 }
 
@@ -700,7 +748,7 @@ String *Item_param::query_val_str(String* str)
       make_datetime(str, &ltime, is_time_only, 0,
 		    tmp_format->format, tmp_format->format_length, 0);
     }
-    str->append("'");
+    str->append('\'');
   }
   return str;
 }
@@ -777,7 +825,7 @@ static void mark_as_dependent(THD *thd, SELECT_LEX *last, SELECT_LEX *current,
   // store pointer on SELECT_LEX from wich item is dependent
   item->depended_from= last;
   current->mark_as_dependent(last);
-  if (thd->lex.describe)
+  if (thd->lex.describe & DESCRIBE_EXTENDED)
   {
     char warn_buff[MYSQL_ERRMSG_SIZE];
     sprintf(warn_buff, ER(ER_WARN_FIELD_RESOLVED),
@@ -1533,6 +1581,34 @@ bool Item_ref::fix_fields(THD *thd,TABLE_LIST *tables, Item **reference)
 }
 
 
+void Item_ref::print(String *str)
+{
+  if (ref && *ref)
+    (*ref)->print(str);
+  else
+    Item_ident::print(str);
+}
+
+
+void Item_ref_null_helper::print(String *str)
+{
+  str->append("<ref_null_helper>(", 18);
+  if (ref && *ref)
+    (*ref)->print(str);
+  else
+    str->append('?');
+  str->append(')');
+}
+
+
+void Item_null_helper::print(String *str)
+{
+  str->append("<null_helper>(", 14);
+  store->print(str);
+  str->append(')');
+}
+
+
 bool Item_default_value::eq(const Item *item, bool binary_cmp) const
 {
   return item->type() == DEFAULT_VALUE_ITEM && 
@@ -1574,10 +1650,10 @@ void Item_default_value::print(String *str)
 {
   if (!arg)
   {
-    str->append("DEFAULT");
+    str->append("default", 7);
     return;
   }
-  str->append("DEFAULT(");
+  str->append("default(", 8);
   arg->print(str);
   str->append(')');
 }
@@ -1630,7 +1706,7 @@ bool Item_insert_value::fix_fields(THD *thd, struct st_table_list *table_list, I
 
 void Item_insert_value::print(String *str)
 {
-  str->append("VALUE(");
+  str->append("values(", 7);
   arg->print(str);
   str->append(')');
 }
@@ -1754,6 +1830,34 @@ Item_cache* Item_cache::get_cache(Item_result type)
   }
 }
 
+
+void Item_cache::print(String *str)
+{
+  str->append("<cache>(", 8);
+  if (example)
+    example->print(str);
+  else
+    Item::print(str);
+  str->append(')');
+}
+
+
+void Item_cache_int::store(Item *item)
+{
+  value= item->val_int_result();
+  null_value= item->null_value;
+  collation.set(item->collation);
+}
+
+
+void Item_cache_real::store(Item *item)
+{
+  value= item->val_result();
+  null_value= item->null_value;
+  collation.set(item->collation);
+}
+
+
 void Item_cache_str::store(Item *item)
 {
   value_buff.set(buffer, sizeof(buffer), item->collation.collation);
@@ -1804,6 +1908,7 @@ bool Item_cache_row::allocate(uint num)
 
 bool Item_cache_row::setup(Item * item)
 {
+  example= item;
   if (!values && allocate(item->cols()))
     return 1;
   for (uint i= 0; i < item_count; i++)

sql/item.h

@@ -182,6 +182,7 @@ public:
   { return decimals != NOT_FIXED_DEC ? (DBL_DIG+2+decimals_par) : DBL_DIG+8;}
   virtual bool const_item() const { return used_tables() == 0; }
   virtual void print(String *str_arg) { str_arg->append(full_name()); }
+  void print_item_w_name(String *);
   virtual void update_used_tables() {}
   virtual void split_sum_func(Item **ref_pointer_array, List<Item> &fields) {}
   virtual bool get_date(TIME *ltime,bool fuzzydate);
@@ -318,6 +319,7 @@ public:
   bool basic_const_item() const { return 1; }
   Item *new_item() { return new Item_null(name); }
   bool is_null() { return 1; }
+  void print(String *str) { str->append("NULL", 4); }
 };
 
 class Item_param :public Item
@@ -368,6 +370,7 @@ public:
   String *query_val_str(String *str);
   enum_field_types field_type() const { return MYSQL_TYPE_STRING; }
   Item *new_item() { return new Item_param(pos_in_query); }
+  void print(String *str) { str->append('?'); }
 };
 
 class Item_int :public Item
@@ -640,6 +643,7 @@ public:
     (*ref)->save_in_field(result_field, no_conversions);
   }
   Item *real_item() { return *ref; }
+  void print(String *str);
 };
 
 class Item_in_subselect;
@@ -655,15 +659,7 @@ public:
   longlong val_int();
   String* val_str(String* s);
   bool get_date(TIME *ltime, bool fuzzydate);
-  void print(String *str)
-  {
-    str->append("ref_null_helper(");
-    if (ref && *ref)
-      (*ref)->print(str);
-    else
-      str->append('?');
-    str->append(')');
-  }
+  void print(String *str);
 };
 
 class Item_null_helper :public Item_ref_null_helper
@@ -675,6 +671,7 @@ public:
     :Item_ref_null_helper(master, &store, table_name_par, field_name_par),
      store(item)
     {}
+  void print(String *str);
 };
 
 /*
@@ -856,14 +853,16 @@ public:
 
 class Item_cache: public Item
 {
+protected:
+  Item *example;
   table_map used_table_map;
 public:
-  Item_cache(): used_table_map(0) {fixed= 1; null_value= 1;}
+  Item_cache(): example(0), used_table_map(0) {fixed= 1; null_value= 1;}
 
   void set_used_tables(table_map map) { used_table_map= map; }
 
   virtual bool allocate(uint i) { return 0; };
-  virtual bool setup(Item *) { return 0; };
+  virtual bool setup(Item *item) { example= item;  return 0; };
   virtual void store(Item *)= 0;
   void set_len_n_dec(uint32 max_len, uint8 dec)
   {
@@ -873,6 +872,7 @@ public:
   enum Type type() const { return CACHE_ITEM; }
   static Item_cache* get_cache(Item_result type);
   table_map used_tables() const { return used_table_map; }
+  void print(String *str);
 };
 
 class Item_cache_int: public Item_cache
@@ -881,12 +881,7 @@ class Item_cache_int: public Item_cache
 public:
   Item_cache_int(): Item_cache() {}
   
-  void store(Item *item)
-  {
-    value= item->val_int_result();
-    null_value= item->null_value;
-    collation.set(item->collation);
-  }
+  void store(Item *item);
   double val() { return (double) value; }
   longlong val_int() { return value; }
   String* val_str(String *str) { str->set(value, default_charset()); return str; }
@@ -899,12 +894,7 @@ class Item_cache_real: public Item_cache
 public:
   Item_cache_real(): Item_cache() {}
   
-  void store(Item *item)
-  {
-    value= item->val_result();
-    null_value= item->null_value;
-    collation.set(item->collation);
-  }
+  void store(Item *item);
   double val() { return value; }
   longlong val_int() { return (longlong) (value+(value > 0 ? 0.5 : -0.5)); }
   String* val_str(String *str)

sql/item_cmpfunc.cc

@@ -113,6 +113,14 @@ longlong Item_func_not_all::val_int()
   return (!null_value && value == 0) ? 1 : 0;
 }
 
+void Item_func_not_all::print(String *str)
+{
+  if (show)
+    Item_func::print(str);
+  else
+    args[0]->print(str);
+}
+
 /*
   Convert a constant expression or string to an integer.
   This is done when comparing DATE's of different formats and
@@ -707,6 +715,18 @@ longlong Item_func_between::val_int()
   return 0;
 }
 
+
+void Item_func_between::print(String *str)
+{
+  str->append('(');
+  args[0]->print(str);
+  str->append(" between ", 9);
+  args[1]->print(str);
+  str->append(" and ", 5);
+  args[2]->print(str);
+  str->append(')');
+}
+
 void
 Item_func_ifnull::fix_length_and_dec()
 {
@@ -863,7 +883,7 @@ Item_func_nullif::fix_length_and_dec()
 }
 
 /*
-  nullif () returns NULL if arguments are different, else it returns the
+  nullif () returns NULL if arguments are equal, else it returns the
   first argument.
   Note that we have to evaluate the first argument twice as the compare
   may have been done with a different type than return value
@@ -1100,7 +1120,27 @@ void Item_func_case::fix_length_and_dec()
 
 void Item_func_case::print(String *str)
 {
-  str->append("case ");				// Not yet complete
+  str->append("(case ", 6);
+  if (first_expr_num != -1)
+  {
+    args[first_expr_num]->print(str);
+    str->append(' ');
+  }
+  for (uint i=0 ; i < ncases ; i+=2)
+  {
+    str->append("when ", 5);
+    args[i]->print(str);
+    str->append(" then ", 6);
+    args[i+1]->print(str);
+    str->append(' ');
+  }
+  if (else_expr_num != -1)
+  {
+    str->append("else ", 5);
+    args[else_expr_num]->print(str);
+    str->append(' ');
+  }
+  str->append("end)", 4);
 }
 
 /*
@@ -1507,8 +1547,15 @@ void Item_func_in::fix_length_and_dec()
 void Item_func_in::print(String *str)
 {
   str->append('(');
-  Item_func::print(str);
-  str->append(')');
+  args[0]->print(str);
+  str->append(" in (", 5);
+  for (uint i=1 ; i < arg_count ; i++)
+  {
+    if (i > 1)
+      str->append(',');
+    args[i]->print(str);
+  }
+  str->append("))", 2);
 }
 
 
@@ -1882,12 +1929,21 @@ void Item_is_not_null_test::update_used_tables()
   }
 }
 
+
 longlong Item_func_isnotnull::val_int()
 {
   return args[0]->is_null() ? 0 : 1;
 }
 
 
+void Item_func_isnotnull::print(String *str)
+{
+  str->append('(');
+  args[0]->print(str);
+  str->append(" is not null)", 13);
+}
+
+
 longlong Item_func_like::val_int()
 {
   String* res = args[0]->val_str(&tmp_value1);

sql/item_cmpfunc.h

@@ -105,7 +105,7 @@ public:
     Item_in_optimizer return NULL, else it evaluate Item_in_subselect.
   */
   longlong val_int();
-  const char *func_name() const { return "IN_OPTIMIZER"; }
+  const char *func_name() const { return "<in_optimizer>"; }
   Item_cache **get_cache() { return &cache; }
 };
 
@@ -162,12 +162,15 @@ class Item_func_not_all :public Item_func_not
 {
   bool abort_on_null;
 public:
-  Item_func_not_all(Item *a) :Item_func_not(a), abort_on_null(0) {}
+  bool show;
+
+  Item_func_not_all(Item *a) :Item_func_not(a), abort_on_null(0), show(0) {}
   virtual void top_level_item() { abort_on_null= 1; }
   bool top_level() { return abort_on_null; }
   longlong val_int();
   enum Functype functype() const { return NOT_ALL_FUNC; }
-  const char *func_name() const { return "not_all"; }
+  const char *func_name() const { return "<not>"; }
+  void print(String *str);
 };
 
 class Item_func_eq :public Item_bool_rowready_func2
@@ -272,6 +275,7 @@ public:
   enum Functype functype() const   { return BETWEEN; }
   const char *func_name() const { return "between"; }
   void fix_length_and_dec();
+  void print(String *str);
 };
 
 
@@ -354,6 +358,7 @@ public:
   enum Item_result result_type () const { return cached_result_type; }
   void fix_length_and_dec();
   const char *func_name() const { return "nullif"; }
+  void print(String *str) { Item_func::print(str); }
   table_map not_null_tables() const { return 0; }
 };
 
@@ -714,7 +719,7 @@ public:
   {}
   enum Functype functype() const { return ISNOTNULLTEST_FUNC; }
   longlong val_int();
-  const char *func_name() const { return "is_not_null_test"; }
+  const char *func_name() const { return "<is_not_null_test>"; }
   void update_used_tables();
 };
 
@@ -733,6 +738,7 @@ public:
   optimize_type select_optimize() const { return OPTIMIZE_NULL; }
   table_map not_null_tables() const { return 0; }
   Item *neg_transformer();
+  void print(String *str);
 };
 
 
@@ -785,7 +791,8 @@ public:
   ~Item_func_regex();
   longlong val_int();
   bool fix_fields(THD *thd, struct st_table_list *tlist, Item **ref);
-  const char *func_name() const { return "regex"; }
+  const char *func_name() const { return "regexp"; }
+  void print(String *str) { print_op(str); }
 };
 
 #else
@@ -796,6 +803,7 @@ public:
   Item_func_regex(Item *a,Item *b) :Item_bool_func(a,b) {}
   longlong val_int() { return 0;}
   const char *func_name() const { return "regex"; }
+  void print(String *str) { print_op(str); }
 };
 
 #endif /* USE_REGEX */

sql/item_create.cc

@@ -292,7 +292,7 @@ Item *create_func_period_diff(Item* a, Item *b)
 
 Item *create_func_pi(void)
 {
-  return new Item_real(NullS,M_PI,6,8);
+  return new Item_real("pi()",M_PI,6,8);
 }
 
 Item *create_func_pow(Item* a, Item *b)

sql/item_func.cc

@@ -287,13 +287,19 @@ void Item_func::print(String *str)
 {
   str->append(func_name());
   str->append('(');
+  print_args(str);
+  str->append(')');
+}
+
+
+void Item_func::print_args(String *str)
+{
   for (uint i=0 ; i < arg_count ; i++)
   {
     if (i)
       str->append(',');
     args[i]->print(str);
   }
-  str->append(')');
 }
 
 
@@ -462,6 +468,24 @@ String *Item_num_op::val_str(String *str)
 }
 
 
+void Item_func_signed::print(String *str)
+{
+  str->append("cast(", 5);
+  args[0]->print(str);
+  str->append(" as signed)", 11);
+
+}
+
+
+void Item_func_unsigned::print(String *str)
+{
+  str->append("cast(", 5);
+  args[0]->print(str);
+  str->append(" as unsigned)", 13);
+
+}
+
+
 double Item_func_plus::val()
 {
   double value=args[0]->val()+args[1]->val();
@@ -1184,6 +1208,21 @@ longlong Item_func_locate::val_int()
 }
 
 
+void Item_func_locate::print(String *str)
+{
+  str->append("locate(", 7);
+  args[1]->print(str);
+  str->append(',');
+  args[0]->print(str);
+  if (arg_count == 3)
+  {
+    str->append(',');
+    args[2]->print(str);
+  }
+  str->append(')');
+}
+
+
 longlong Item_func_field::val_int()
 {
   if (cmp_type == STRING_RESULT)
@@ -1764,7 +1803,7 @@ void item_user_lock_release(ULL *ull)
     String tmp(buf,sizeof(buf), system_charset_info);
     tmp.copy(command, strlen(command), tmp.charset());
     tmp.append(ull->key,ull->key_length);
-    tmp.append("\")");
+    tmp.append("\")", 2);
     Query_log_event qev(current_thd, tmp.ptr(), tmp.length(),1);
     qev.error_code=0; // this query is always safe to run on slave
     mysql_bin_log.write(&qev);
@@ -2049,6 +2088,19 @@ longlong Item_func_benchmark::val_int()
 }
 
 
+void Item_func_benchmark::print(String *str)
+{
+  str->append("benchmark(", 10);
+  char buffer[20];
+  // latin1 is good enough for numbers
+  String st(buffer, sizeof(buffer), &my_charset_latin1);
+  st.set((ulonglong)loop_count, &my_charset_latin1);
+  str->append(st);
+  str->append(',');
+  args[0]->print(str);
+  str->append(')');
+}
+
 #define extra_size sizeof(double)
 
 static user_var_entry *get_variable(HASH *hash, LEX_STRING &name,
@@ -2387,9 +2439,9 @@ String *Item_func_set_user_var::val_str(String *str)
 
 void Item_func_set_user_var::print(String *str)
 {
-  str->append("(@@",3);
-  str->append(name.str,name.length);
-  str->append(":=",2);
+  str->append("(@", 2);
+  str->append(name.str, name.length);
+  str->append(":=", 2);
   args[0]->print(str);
   str->append(')');
 }
@@ -2535,7 +2587,7 @@ enum Item_result Item_func_get_user_var::result_type() const
 
 void Item_func_get_user_var::print(String *str)
 {
-  str->append('@');
+  str->append("(@", 2);
   str->append(name.str,name.length);
   str->append(')');
 }
@@ -2815,6 +2867,26 @@ double Item_func_match::val()
                                                    table->record[0], 0));
 }
 
+void Item_func_match::print(String *str)
+{
+  str->append("(match ", 7);
+  List_iterator_fast<Item> li(fields);
+  Item *item;
+  bool first= 1;
+  while ((item= li++))
+  {
+    if (first)
+      first= 0;
+    else
+      str->append(',');
+    item->print(str);
+  }
+  str->append(" against (", 10);
+  args[0]->print(str);
+  if (mode == FT_BOOL)
+    str->append(" in boolean mode", 16);
+  str->append("))", 2);
+}
 
 longlong Item_func_bit_xor::val_int()
 {

sql/item_func.h

@@ -125,6 +125,7 @@ public:
   virtual void split_sum_func(Item **ref_pointer_array, List<Item> &fields);
   void print(String *str);
   void print_op(String *str);
+  void print_args(String *str);
   void fix_num_length_and_dec();
   inline bool get_arg0_date(TIME *ltime,bool fuzzy_date)
   {
@@ -215,6 +216,7 @@ public:
   longlong val_int() { return args[0]->val_int(); }
   void fix_length_and_dec()
   { max_length=args[0]->max_length; unsigned_flag=0; }
+  void print(String *str);
 };
 
 
@@ -226,6 +228,7 @@ public:
   longlong val_int() { return args[0]->val_int(); }
   void fix_length_and_dec()
   { max_length=args[0]->max_length; unsigned_flag=1; }
+  void print(String *str);
 };
 
 
@@ -607,6 +610,7 @@ public:
   const char *func_name() const { return "locate"; }
   longlong val_int();
   void fix_length_and_dec();
+  void print(String *str);
 };
 
 
@@ -663,6 +667,7 @@ public:
   longlong val_int();
   const char *func_name() const { return "|"; }
   void fix_length_and_dec() { unsigned_flag=1; }
+  void print(String *str) { print_op(str); }
 };
 
 class Item_func_bit_and :public Item_int_func
@@ -672,6 +677,7 @@ public:
   longlong val_int();
   const char *func_name() const { return "&"; }
   void fix_length_and_dec() { unsigned_flag=1; }
+  void print(String *str) { print_op(str); }
 };
 
 class Item_func_bit_count :public Item_int_func
@@ -690,6 +696,7 @@ public:
   longlong val_int();
   const char *func_name() const { return "<<"; }
   void fix_length_and_dec() { unsigned_flag=1; }
+  void print(String *str) { print_op(str); }
 };
 
 class Item_func_shift_right :public Item_int_func
@@ -698,6 +705,7 @@ public:
   Item_func_shift_right(Item *a,Item *b) :Item_int_func(a,b) {}
   longlong val_int();
   const char *func_name() const { return ">>"; }
+  void print(String *str) { print_op(str); }
 };
 
 class Item_func_bit_neg :public Item_int_func
@@ -728,6 +736,7 @@ class Item_func_benchmark :public Item_int_func
   longlong val_int();
   const char *func_name() const { return "benchmark"; }
   void fix_length_and_dec() { max_length=1; maybe_null=0; }
+  void print(String *str);
 };
 
 
@@ -1005,6 +1014,7 @@ public:
   bool eq(const Item *, bool binary_cmp) const;
   longlong val_int() { return val()!=0.0; }
   double val();
+  void print(String *str);
 
   bool fix_index();
   void init_search(bool no_order);
@@ -1018,6 +1028,7 @@ public:
   longlong val_int();
   const char *func_name() const { return "^"; }
   void fix_length_xor_dec() { unsigned_flag=1; }
+  void print(String *str) { print_op(str); }
 };
 
 class Item_func_is_free_lock :public Item_int_func
@@ -1026,7 +1037,7 @@ class Item_func_is_free_lock :public Item_int_func
 public:
   Item_func_is_free_lock(Item *a) :Item_int_func(a) {}
   longlong val_int();
-  const char *func_name() const { return "check_lock"; }
+  const char *func_name() const { return "is_free_lock"; }
   void fix_length_and_dec() { decimals=0; max_length=1; maybe_null=1;}
 };
 

sql/item_geofunc.h

@@ -118,6 +118,7 @@ public:
       case SP_EXTERIORRING:
         return "exteriorring";
       default:
+	DBUG_ASSERT(0);  // Should never happened
         return "spatial_decomp_unknown"; 
     }
   }
@@ -142,6 +143,7 @@ public:
       case SP_INTERIORRINGN:
         return "interiorringn";
       default:
+	DBUG_ASSERT(0);  // Should never happened
         return "spatial_decomp_n_unknown"; 
     }
   }
@@ -210,6 +212,7 @@ public:
     case SP_OVERLAPS_FUNC:
       return "overlaps";
     default:
+      DBUG_ASSERT(0);  // Should never happened
       return "sp_unknown"; 
     }
     }

sql/item_row.cc

@@ -118,6 +118,18 @@ bool Item_row::check_cols(uint c)
   return 0;
 }
 
+void Item_row::print(String *str)
+{
+  str->append('(');
+  for (uint i= 0; i < arg_count; i++)
+  {
+    if (i)
+      str->append(',');
+    items[i]->print(str);
+  }
+  str->append(')');
+}
+
 bool Item_row::walk(Item_processor processor, byte *arg)
 {
   for (uint i= 0; i < arg_count; i++)

sql/item_row.h

@@ -68,6 +68,7 @@ public:
   bool const_item() const { return const_item_cache; };
   enum Item_result result_type() const { return ROW_RESULT; }
   void update_used_tables();
+  void print(String *str);
 
   bool walk(Item_processor processor, byte *arg);
 

sql/item_strfunc.cc

@@ -654,6 +654,17 @@ void Item_func_concat_ws::update_used_tables()
   const_item_cache&=separator->const_item();
 }
 
+void Item_func_concat_ws::print(String *str)
+{
+  str->append("concat_ws(", 10);
+  separator->print(str);
+  if (arg_count)
+  {
+    str->append(',');
+    print_args(str);
+  }
+  str->append(')');
+}
 
 String *Item_func_reverse::val_str(String *str)
 {
@@ -1613,6 +1624,19 @@ String *Item_func_format::val_str(String *str)
 }
 
 
+void Item_func_format::print(String *str)
+{
+  str->append("format(", 7);
+  args[0]->print(str);
+  str->append(',');  
+  // latin1 is good enough for numbers
+  char buffer[20];
+  String st(buffer, sizeof(buffer), &my_charset_latin1);
+  st.set((ulonglong)decimals, &my_charset_latin1);
+  str->append(st);
+  str->append(')');
+}
+
 void Item_func_elt::fix_length_and_dec()
 {
   max_length=0;
@@ -1764,6 +1788,19 @@ String *Item_func_make_set::val_str(String *str)
 }
 
 
+void Item_func_make_set::print(String *str)
+{
+  str->append("make_set(", 9);
+  item->print(str);
+  if (arg_count)
+  {
+    str->append(',');
+    print_args(str);
+  }
+  str->append(')');
+}
+
+
 String *Item_func_char::val_str(String *str)
 {
   str->length(0);
@@ -2077,7 +2114,14 @@ void Item_func_conv_charset::fix_length_and_dec()
   max_length = args[0]->max_length*conv_charset->mbmaxlen;
 }
 
-
+void Item_func_conv_charset::print(String *str)
+{
+  str->append("convert(", 8);
+  args[0]->print(str);
+  str->append(" using ", 7);
+  str->append(conv_charset->csname);
+  str->append(')');
+}
 
 String *Item_func_conv_charset3::val_str(String *str)
 {
@@ -2271,6 +2315,14 @@ String *Item_func_hex::val_str(String *str)
 }
 
 
+void Item_func_binary::print(String *str)
+{
+  str->append("cast(", 5);
+  args[0]->print(str);
+  str->append(" as binary)", 11);
+}
+
+
 #include <my_dir.h>				// For my_stat
 
 String *Item_load_file::val_str(String *str)

sql/item_strfunc.h

@@ -112,6 +112,7 @@ public:
     return separator->walk(processor, arg) ||
       Item_str_func::walk(processor, arg);
   }
+  void print(String *str);
 };
 
 class Item_func_reverse :public Item_str_func
@@ -120,6 +121,7 @@ public:
   Item_func_reverse(Item *a) :Item_str_func(a) {}
   String *val_str(String *);
   void fix_length_and_dec();
+  const char *func_name() const { return "reverse"; }
 };
 
 
@@ -324,10 +326,12 @@ public:
   Item_func_encrypt(Item *a, Item *b): Item_str_func(a,b) {}
   String *val_str(String *);
   void fix_length_and_dec() { maybe_null=1; max_length = 13; }
+  const char *func_name() const { return "ecrypt"; }
 };
 
 #include "sql_crypt.h"
 
+
 class Item_func_encode :public Item_str_func
 {
  protected:
@@ -337,13 +341,16 @@ public:
     Item_str_func(a),sql_crypt(seed) {}
   String *val_str(String *);
   void fix_length_and_dec();
+  const char *func_name() const { return "encode"; }
 };
 
+
 class Item_func_decode :public Item_func_encode
 {
 public:
   Item_func_decode(Item *a, char *seed): Item_func_encode(a,seed) {}
   String *val_str(String *);
+  const char *func_name() const { return "decode"; }
 };
 
 
@@ -420,6 +427,7 @@ public:
     return item->walk(processor, arg) ||
       Item_str_func::walk(processor, arg);
   }
+  void print(String *str);
 };
 
 
@@ -435,6 +443,7 @@ public:
     max_length=args[0]->max_length+(args[0]->max_length-args[0]->decimals)/3;
   }
   const char *func_name() const { return "format"; }
+  void print(String *);
 };
 
 
@@ -520,7 +529,6 @@ class Item_func_binary :public Item_str_func
 {
 public:
   Item_func_binary(Item *a) :Item_str_func(a) {}
-  const char *func_name() const { return "binary"; }
   String *val_str(String *a)
   {
     String *tmp=args[0]->val_str(a);
@@ -534,7 +542,7 @@ public:
     collation.set(&my_charset_bin); 
     max_length=args[0]->max_length; 
   }
-  void print(String *str) { print_op(str); }
+  void print(String *str);
 };
 
 
@@ -597,7 +605,8 @@ public:
   { conv_charset=cs; }
   String *val_str(String *);
   void fix_length_and_dec();
-  const char *func_name() const { return "conv_charset"; }
+  const char *func_name() const { return "convert"; }
+  void print(String *str);
 };
 
 class Item_func_set_collation :public Item_str_func
@@ -607,7 +616,8 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   bool eq(const Item *item, bool binary_cmp) const;
-  const char *func_name() const { return "set_collation"; }
+  const char *func_name() const { return "collate"; }
+  void print(String *str) { print_op(str); }
 };
 
 class Item_func_conv_charset3 :public Item_str_func
@@ -617,7 +627,7 @@ public:
     :Item_str_func(arg1,arg2,arg3) {}
   String *val_str(String *);
   void fix_length_and_dec();
-  const char *func_name() const { return "conv_charset3"; }
+  const char *func_name() const { return "convert"; }
 };
 
 class Item_func_charset :public Item_str_func

sql/item_subselect.cc

@@ -146,21 +146,25 @@ Item::Type Item_subselect::type() const
   return SUBSELECT_ITEM;
 }
 
+
 void Item_subselect::fix_length_and_dec()
 {
   engine->fix_length_and_dec(0);
 }
 
+
 table_map Item_subselect::used_tables() const
 {
   return (table_map) (engine->dependent() ? used_tables_cache : 0L);
 }
 
+
 bool Item_subselect::const_item() const
 {
   return const_item_cache;
 }
 
+
 void Item_subselect::update_used_tables()
 {
   if (!engine->uncacheable())
@@ -171,6 +175,15 @@ void Item_subselect::update_used_tables()
   }
 }
 
+
+void Item_subselect::print(String *str)
+{
+  str->append('(');
+  engine->print(str);
+  str->append(')');
+}
+
+
 Item_singlerow_subselect::Item_singlerow_subselect(st_select_lex *select_lex)
   :Item_subselect(), value(0)
 {
@@ -184,11 +197,12 @@ Item_singlerow_subselect::Item_singlerow_subselect(st_select_lex *select_lex)
 
 Item_maxmin_subselect::Item_maxmin_subselect(Item_subselect *parent,
 					     st_select_lex *select_lex,
-					     bool max)
+					     bool max_arg)
   :Item_singlerow_subselect()
 {
   DBUG_ENTER("Item_maxmin_subselect::Item_maxmin_subselect");
-  init(select_lex, new select_max_min_finder_subselect(this, max));
+  max= max_arg;
+  init(select_lex, new select_max_min_finder_subselect(this, max_arg));
   max_columns= 1;
   maybe_null= 1;
   max_columns= 1;
@@ -203,6 +217,12 @@ Item_maxmin_subselect::Item_maxmin_subselect(Item_subselect *parent,
   DBUG_VOID_RETURN;
 }
 
+void Item_maxmin_subselect::print(String *str)
+{
+  str->append(max?"<max>":"<min>", 5);
+  Item_singlerow_subselect::print(str);
+}
+
 void Item_singlerow_subselect::reset()
 {
   null_value= 1;
@@ -245,7 +265,7 @@ Item_singlerow_subselect::select_transformer(JOIN *join)
     */
     substitution->walk(&Item::remove_dependence_processor,
 		       (byte *) select_lex->outer_select());
-    if (select_lex->where || select_lex->having)
+    if (join->conds || join->having)
     {
       Item *cond;
       if (!join->having)
@@ -365,6 +385,7 @@ String *Item_singlerow_subselect::val_str (String *str)
   }
 }
 
+
 Item_exists_subselect::Item_exists_subselect(st_select_lex *select_lex):
   Item_subselect()
 {
@@ -379,6 +400,14 @@ Item_exists_subselect::Item_exists_subselect(st_select_lex *select_lex):
   DBUG_VOID_RETURN;
 }
 
+
+void Item_exists_subselect::print(String *str)
+{
+  str->append("exists", 6);
+  Item_subselect::print(str);
+}
+
+
 bool Item_in_subselect::test_limit(SELECT_LEX_UNIT *unit)
 {
   if (unit->fake_select_lex &&
@@ -396,7 +425,7 @@ bool Item_in_subselect::test_limit(SELECT_LEX_UNIT *unit)
 
 Item_in_subselect::Item_in_subselect(Item * left_exp,
 				     st_select_lex *select_lex):
-  Item_exists_subselect(), upper_not(0)
+  Item_exists_subselect(), transformed(0), upper_not(0)
 {
   DBUG_ENTER("Item_in_subselect::Item_in_subselect");
   left_expr= left_exp;
@@ -412,8 +441,9 @@ Item_in_subselect::Item_in_subselect(Item * left_exp,
 
 Item_allany_subselect::Item_allany_subselect(Item * left_exp,
 					     compare_func_creator fn,
-					     st_select_lex *select_lex)
-  :Item_in_subselect()
+					     st_select_lex *select_lex,
+					     bool all_arg)
+  :Item_in_subselect(), all(all_arg)
 {
   DBUG_ENTER("Item_in_subselect::Item_in_subselect");
   left_expr= left_exp;
@@ -800,6 +830,7 @@ Item_in_subselect::row_value_transformer(JOIN *join,
 Item_subselect::trans_res
 Item_in_subselect::select_transformer(JOIN *join)
 {
+  transformed= 1;
   if (left_expr->cols() == 1)
     return single_value_transformer(join, left_expr,
 				    &Item_bool_func2::eq_creator);
@@ -807,12 +838,82 @@ Item_in_subselect::select_transformer(JOIN *join)
 }
 
 
+void Item_in_subselect::print(String *str)
+{
+  if (transformed)
+    str->append("<exists>", 8);
+  else
+  {
+    left_expr->print(str);
+    str->append(" in ", 4);
+  }
+  Item_subselect::print(str);
+}
+
+
 Item_subselect::trans_res
 Item_allany_subselect::select_transformer(JOIN *join)
 {
+  transformed= 1;
+  if (upper_not)
+    upper_not->show= 1;
   return single_value_transformer(join, left_expr, func);
 }
 
+
+void Item_allany_subselect::print(String *str)
+{
+  if (transformed)
+    str->append("<exists>", 8);
+  else
+  {
+    left_expr->print(str);
+    str->append(' ');
+    if (all)
+    {
+      if (func ==  &Item_bool_func2::lt_creator)
+	str->append(">=", 2);
+      else if (func ==  &Item_bool_func2::gt_creator)
+	str->append("<=", 2);
+      else if (func ==  &Item_bool_func2::le_creator)
+	str->append('>');
+      else if (func ==  &Item_bool_func2::ge_creator)
+	str->append('<');
+      else if (func ==  &Item_bool_func2::eq_creator)
+	str->append("<>", 2);
+      else if (func ==  &Item_bool_func2::ne_creator)
+	str->append('=');
+      else
+      {
+	DBUG_ASSERT(0);  // Impossible
+      }
+      str->append(" all ", 5);
+    }
+    else
+    {
+      if (func ==  &Item_bool_func2::lt_creator)
+	str->append('<');
+      else if (func ==  &Item_bool_func2::gt_creator)
+	str->append('>');
+      else if (func ==  &Item_bool_func2::le_creator)
+	str->append("<=", 2);
+      else if (func ==  &Item_bool_func2::ge_creator)
+	str->append(">=", 2);
+      else if (func ==  &Item_bool_func2::eq_creator)
+	str->append('=');
+      else if (func ==  &Item_bool_func2::ne_creator)
+	str->append("<>", 2);
+      else
+      {
+	DBUG_ASSERT(0);  // Impossible
+      }
+      str->append(" any ", 5);
+    }
+  }
+  Item_subselect::print(str);
+}
+
+
 subselect_single_select_engine::
 subselect_single_select_engine(st_select_lex *select,
 			       select_subselect *result,
@@ -1140,11 +1241,13 @@ uint subselect_single_select_engine::cols()
   return select_lex->item_list.elements;
 }
 
+
 uint subselect_union_engine::cols()
 {
   return unit->first_select()->item_list.elements;
 }
 
+
 bool subselect_single_select_engine::dependent()
 {
   return select_lex->dependent;
@@ -1155,16 +1258,19 @@ bool subselect_union_engine::dependent()
   return unit->dependent;
 }
 
+
 bool subselect_single_select_engine::uncacheable()
 {
   return select_lex->uncacheable;
 }
 
+
 bool subselect_union_engine::uncacheable()
 {
   return unit->uncacheable;
 }
 
+
 void subselect_single_select_engine::exclude()
 {
   select_lex->master_unit()->exclude_level();
@@ -1175,6 +1281,7 @@ void subselect_union_engine::exclude()
   unit->exclude_level();
 }
 
+
 void subselect_uniquesubquery_engine::exclude()
 {
   //this never should be called
@@ -1201,8 +1308,59 @@ table_map subselect_single_select_engine::upper_select_const_tables()
 			   table_list.first);
 }
 
+
 table_map subselect_union_engine::upper_select_const_tables()
 {
   return calc_const_tables((TABLE_LIST *) unit->outer_select()->
 			   table_list.first);
 }
+
+
+void subselect_single_select_engine::print(String *str)
+{
+  select_lex->print(thd, str);
+}
+
+
+void subselect_union_engine::print(String *str)
+{
+  unit->print(str);
+}
+
+
+void subselect_uniquesubquery_engine::print(String *str)
+{
+  str->append("<primary_index_lookup>(", 23);
+  tab->ref.items[0]->print(str);
+  str->append(" in ", 4);
+  str->append(tab->table->real_name);
+  KEY *key_info= tab->table->key_info+ tab->ref.key;
+  str->append(" on ", 4);
+  str->append(key_info->name);
+  if (cond)
+  {
+    str->append(" where ", 7);
+    cond->print(str);
+  }
+  str->append(')');
+}
+
+
+void subselect_indexsubquery_engine::print(String *str)
+{
+  str->append("<index_lookup>(", 15);
+  tab->ref.items[0]->print(str);
+  str->append(" in ", 4);
+  str->append(tab->table->real_name);
+  KEY *key_info= tab->table->key_info+ tab->ref.key;
+  str->append(" on ", 4);
+  str->append(key_info->name);
+  if (check_null)
+    str->append(" chicking NULL", 14);
+    if (cond)
+  {
+    str->append(" where ", 7);
+    cond->print(str);
+  }
+  str->append(')');
+}

sql/item_subselect.h

@@ -92,13 +92,7 @@ public:
   inline table_map get_used_tables_cache() { return used_tables_cache; }
   inline bool get_const_item_cache() { return const_item_cache; }
   void update_used_tables();
-  void print(String *str)
-  {
-    if (name)
-      str->append(name);
-    else
-      str->append("-subselect-");
-  }
+  void print(String *str);
   bool change_engine(subselect_engine *eng)
   {
     engine= eng;
@@ -147,9 +141,11 @@ public:
 /* used in static ALL/ANY optimisation */
 class Item_maxmin_subselect :public Item_singlerow_subselect
 {
+  bool max;
 public:
   Item_maxmin_subselect(Item_subselect *parent,
 			st_select_lex *select_lex, bool max);
+  void print(String *str);
 };
 
 /* exists subselect */
@@ -174,6 +170,7 @@ public:
   double val();
   String *val_str(String*);
   void fix_length_and_dec();
+  void print(String *str);
 
   friend class select_exists_subselect;
   friend class subselect_uniquesubquery_engine;
@@ -194,12 +191,15 @@ protected:
   Item_in_optimizer *optimizer;
   bool was_null;
   bool abort_on_null;
+  bool transformed;
 public:
   Item_func_not_all *upper_not; // point on NOT before ALL subquery
 
   Item_in_subselect(Item * left_expr, st_select_lex *select_lex);
   Item_in_subselect()
-    :Item_exists_subselect(), abort_on_null(0), upper_not(0) {}
+    :Item_exists_subselect(), abort_on_null(0), transformed(0), upper_not(0)
+     
+  {}
 
   subs_type substype() { return IN_SUBS; }
   void reset() 
@@ -219,6 +219,7 @@ public:
   String *val_str(String*);
   void top_level_item() { abort_on_null=1; }
   bool test_limit(st_select_lex_unit *unit);
+  void print(String *str);
 
   friend class Item_ref_null_helper;
   friend class Item_is_not_null_test;
@@ -233,12 +234,15 @@ protected:
   compare_func_creator func;
 
 public:
+  bool all;
+
   Item_allany_subselect(Item * left_expr, compare_func_creator f,
-		     st_select_lex *select_lex);
+		     st_select_lex *select_lex, bool all);
 
   // only ALL subquery has upper not
   subs_type substype() { return upper_not?ALL_SUBS:ANY_SUBS; }
   trans_res select_transformer(JOIN *join);
+  void print(String *str);
 };
 
 
@@ -276,6 +280,7 @@ public:
   bool may_be_null() { return maybe_null; };
   virtual table_map upper_select_const_tables()= 0;
   static table_map calc_const_tables(TABLE_LIST *);
+  virtual void print(String *str)= 0;
 };
 
 
@@ -298,6 +303,7 @@ public:
   bool uncacheable();
   void exclude();
   table_map upper_select_const_tables();
+  void print (String *str);
 };
 
 
@@ -316,6 +322,7 @@ public:
   bool uncacheable();
   void exclude();
   table_map upper_select_const_tables();
+  void print (String *str);
 };
 
 
@@ -343,6 +350,7 @@ public:
   bool uncacheable() { return 1; }
   void exclude();
   table_map upper_select_const_tables() { return 0; }
+  void print (String *str);
 };
 
 
@@ -359,4 +367,5 @@ public:
      check_null(chk_null)
   {}
   int exec();
+  void print (String *str);
 };

sql/item_sum.cc

@@ -1366,6 +1366,14 @@ longlong Item_sum_count_distinct::val_int()
   return table->file->records;
 }
 
+
+void Item_sum_count_distinct::print(String *str)
+{
+  str->append("count(distinct ", 15);
+  args[0]->print(str);
+  str->append(')');
+}
+
 /****************************************************************************
 ** Functions to handle dynamic loadable aggregates
 ** Original source by: Alexis Mikhailov <root@medinf.chuvashia.su>
@@ -1960,3 +1968,29 @@ String* Item_func_group_concat::val_str(String* str)
   }
   return &result;
 }
+
+void Item_func_group_concat::print(String *str)
+{
+  str->append("group_concat(", 13);
+  if (distinct)
+    str->append("distinct ", 9);
+  for (uint i= 0; i < arg_count; i++)
+  {
+    if (i)
+      str->append(',');
+    args[i]->print(str);
+  }
+  if (arg_count_order)
+  {
+    str->append(" order by ", 10);
+    for (uint i= 0 ; i < arg_count_order ; i++)
+    {
+      if (i)
+	str->append(',');
+      (*order[i]->item)->print(str);
+    }
+  }
+  str->append(" seperator \'", 12);
+  str->append(*separator);
+  str->append("\')", 2);
+}

sql/item_sum.h

@@ -238,6 +238,7 @@ class Item_sum_count_distinct :public Item_sum_int
   void make_unique();
   Item *copy_or_same(THD* thd);
   void no_rows_in_result() {}
+  void print(String *str);
 };
 
 
@@ -748,4 +749,5 @@ class Item_func_group_concat : public Item_sum
   String* val_str(String* str);
   Item *copy_or_same(THD* thd);
   void no_rows_in_result() {}
+  void print(String *str);
 };

sql/item_timefunc.cc

@@ -433,7 +433,7 @@ String *make_datetime(String *str, TIME *l_time,
 	length= int10_to_str(l_time->day, intbuff, 10) - intbuff;
 	str->append_with_prefill(intbuff, length, 1, '0');
 	if (l_time->day >= 10 &&  l_time->day <= 19)
-	  str->append("th");
+	  str->append("th", 2);
 	else
 	{
 	  switch (l_time->day %10) {
@@ -531,7 +531,7 @@ String *make_datetime(String *str, TIME *l_time,
 	str->append_with_prefill(intbuff, length, 2, '0');
 	if (add_second_frac)
 	{
-	  str->append(".", 1);
+	  str->append('.');
 	  length= int10_to_str(l_time->second_part, intbuff, 10) - intbuff;
 	  str->append_with_prefill(intbuff, length, 6, '0');
 	}
@@ -1644,6 +1644,36 @@ longlong Item_date_add_interval::val_int()
     ((date*100L + ltime.hour)*100L+ ltime.minute)*100L + ltime.second;
 }
 
+static const char *interval_names[]=
+{
+  "year", "month", "day", "hour", "minute",
+  "second", "microsecond", "year_month",
+  "day_hour", "day_minute", "day_second",
+  "hour_minute", "hour_second", "minute_second",
+  "day_microsecond", "hour_microsecond",
+  "minute_microsecond", "second_microsecond"
+};
+
+void Item_date_add_interval::print(String *str)
+{
+  str->append('(');
+  args[0]->print(str);
+  str->append(date_sub_interval?" - interval ":" + interval ");
+  args[1]->print(str);
+  str->append(' ');
+  str->append(interval_names[int_type]);
+  str->append(')');
+}
+
+void Item_extract::print(String *str)
+{
+  str->append("extract(", 8);
+  str->append(interval_names[int_type]);
+  str->append(" from ", 6);
+  args[0]->print(str);
+  str->append(')');
+}
+
 void Item_extract::fix_length_and_dec()
 {
   value.alloc(32);				// alloc buffer
@@ -1751,10 +1781,33 @@ bool Item_extract::eq(const Item *item, bool binary_cmp) const
 
 void Item_typecast::print(String *str)
 {
-  str->append("CAST(");
+  str->append("cast(", 5);
+  args[0]->print(str);
+  str->append(" as ", 4);
+  str->append(cast_type());
+  str->append(')');
+}
+
+void Item_char_typecast::print(String *str)
+{
+  str->append("cast(", 5);
   args[0]->print(str);
-  str->append(" AS ");
-  str->append(func_name());
+  str->append(" as char", 8);
+  if (cast_length >= 0)
+  {
+    str->append('(');
+    char buffer[20];
+    // latin1 is good enough for numbers
+    String st(buffer, sizeof(buffer), &my_charset_latin1);
+    st.set((ulonglong)cast_length, &my_charset_latin1);
+    str->append(st);
+    str->append(')');
+  }
+  if (cast_cs)
+  {
+    str->append(" charset ", 9);
+    str->append(cast_cs->name);
+  }
   str->append(')');
 }
 
@@ -2039,6 +2092,28 @@ null_date:
   return 0;
 }
 
+
+void Item_func_add_time::print(String *str)
+{
+  if (is_date)
+  {
+    DBUG_ASSERT(sign > 0);
+    str->append("timestamp(", 10);
+  }
+  else
+  {
+    if (sign > 0)
+      str->append("addtime(", 8);
+    else
+      str->append("subtime(", 8);
+  }
+  args[0]->print(str);
+  str->append(',');
+  args[0]->print(str);
+  str->append(')');
+}
+
+
 /*
   TIMEDIFF(t,s) is a time function that calculates the 
   time value between a start and end time.

sql/item_timefunc.h

@@ -285,7 +285,7 @@ public:
   Item_func_unix_timestamp() :Item_int_func() {}
   Item_func_unix_timestamp(Item *a) :Item_int_func(a) {}
   longlong val_int();
-  const char *func_name() const { return "timestamp"; }
+  const char *func_name() const { return "unix_timestamp"; }
   void fix_length_and_dec()
   {
     decimals=0;
@@ -544,13 +544,13 @@ public:
 enum interval_type
 {
   INTERVAL_YEAR, INTERVAL_MONTH, INTERVAL_DAY, INTERVAL_HOUR, INTERVAL_MINUTE,
-  INTERVAL_SECOND, INTERVAL_MICROSECOND ,INTERVAL_YEAR_MONTH, INTERVAL_DAY_HOUR,
-  INTERVAL_DAY_MINUTE, INTERVAL_DAY_SECOND, INTERVAL_HOUR_MINUTE,
-  INTERVAL_HOUR_SECOND, INTERVAL_MINUTE_SECOND, INTERVAL_DAY_MICROSECOND,
-  INTERVAL_HOUR_MICROSECOND, INTERVAL_MINUTE_MICROSECOND, INTERVAL_SECOND_MICROSECOND
+  INTERVAL_SECOND, INTERVAL_MICROSECOND ,INTERVAL_YEAR_MONTH,
+  INTERVAL_DAY_HOUR, INTERVAL_DAY_MINUTE, INTERVAL_DAY_SECOND,
+  INTERVAL_HOUR_MINUTE, INTERVAL_HOUR_SECOND, INTERVAL_MINUTE_SECOND,
+  INTERVAL_DAY_MICROSECOND, INTERVAL_HOUR_MICROSECOND,
+  INTERVAL_MINUTE_MICROSECOND, INTERVAL_SECOND_MICROSECOND
 };
 
-
 class Item_date_add_interval :public Item_date_func
 {
   const interval_type int_type;
@@ -568,6 +568,7 @@ public:
   double val() { return (double) val_int(); }
   longlong val_int();
   bool get_date(TIME *res,bool fuzzy_date);
+  void print(String *str);
 };
 
 
@@ -583,6 +584,7 @@ class Item_extract :public Item_int_func
   const char *func_name() const { return "extract"; }
   void fix_length_and_dec();
   bool eq(const Item *item, bool binary_cmp) const;
+  void print(String *str);
 };
 
 
@@ -590,7 +592,6 @@ class Item_typecast :public Item_str_func
 {
 public:
   Item_typecast(Item *a) :Item_str_func(a) {}
-  const char *func_name() const { return "char"; }
   String *val_str(String *a)
   {
     String *tmp=args[0]->val_str(a);
@@ -604,6 +605,7 @@ public:
     collation.set(default_charset());
     max_length=args[0]->max_length;
   }
+  virtual const char* cast_type() const= 0;
   void print(String *str);
 };
 
@@ -617,8 +619,10 @@ class Item_char_typecast :public Item_typecast
 public:
   Item_char_typecast(Item *a, int length_arg, CHARSET_INFO *cs_arg)
     :Item_typecast(a), cast_length(length_arg), cast_cs(cs_arg) {}
+  const char* cast_type() const { return "char"; };
   String *val_str(String *a);
   void fix_length_and_dec();
+  void print(String *str);
 };
 
 
@@ -628,7 +632,7 @@ public:
   Item_date_typecast(Item *a) :Item_typecast(a) {}
   String *val_str(String *str);
   bool get_date(TIME *ltime, bool fuzzy_date);
-  const char *func_name() const { return "date"; }
+  const char *cast_type() const { return "date"; }
   enum_field_types field_type() const { return MYSQL_TYPE_DATE; }
   Field *tmp_table_field(TABLE *t_arg)
   {
@@ -643,7 +647,7 @@ public:
   Item_time_typecast(Item *a) :Item_typecast(a) {}
   String *val_str(String *str);
   bool get_time(TIME *ltime);
-  const char *func_name() const { return "time"; }
+  const char *cast_type() const { return "time"; }
   enum_field_types field_type() const { return MYSQL_TYPE_TIME; }
   Field *tmp_table_field(TABLE *t_arg)
   {
@@ -657,7 +661,7 @@ class Item_datetime_typecast :public Item_typecast
 public:
   Item_datetime_typecast(Item *a) :Item_typecast(a) {}
   String *val_str(String *str);
-  const char *func_name() const { return "datetime"; }
+  const char *cast_type() const { return "datetime"; }
   enum_field_types field_type() const { return MYSQL_TYPE_DATETIME; }
   Field *tmp_table_field(TABLE *t_arg)
   {
@@ -694,7 +698,6 @@ public:
   Item_func_add_time(Item *a, Item *b, bool type_arg, bool neg_arg)
     :Item_str_func(a, b), is_date(type_arg) { sign= neg_arg ? -1 : 1; }
   String *val_str(String *str);
-  const char *func_name() const { return "addtime"; }
   enum_field_types field_type() const { return cached_field_type; }
   void fix_length_and_dec();
 
@@ -711,6 +714,7 @@ public:
       return (new Field_datetime(maybe_null, name, t_arg, &my_charset_bin));
     return (new Field_string(max_length, maybe_null, name, t_arg, &my_charset_bin));
   }
+  void print(String *str);
 };
 
 class Item_func_timediff :public Item_str_func

sql/item_uniq.h

@@ -29,6 +29,7 @@ public:
     :Item_real_func(list) {}
   double val() { return 0.0; }
   void fix_length_and_dec() { decimals=0; max_length=6; }
+  void print(String *str) { str->append("0.0", 3); }
 };
 
 
@@ -54,4 +55,5 @@ public:
   {
     return new Item_sum_unique_users(thd, *this);
   }
+  void print(String *str) { str->append("0.0", 3); }
 };

sql/key.cc

@@ -227,7 +227,7 @@ void key_unpack(String *to,TABLE *table,uint idx)
     {
       if (table->record[0][key_part->null_offset] & key_part->null_bit)
       {
-	to->append("NULL");
+	to->append("NULL", 4);
 	continue;
       }
     }
@@ -239,7 +239,7 @@ void key_unpack(String *to,TABLE *table,uint idx)
       to->append(tmp);
     }
     else
-      to->append("???");
+      to->append("???", 3);
   }
   DBUG_VOID_RETURN;
 }

sql/mysql_priv.h

@@ -204,6 +204,9 @@ extern CHARSET_INFO *national_charset_info, *table_alias_charset;
 #define OPTION_QUOTE_SHOW_CREATE OPTION_QUICK*2
 #define OPTION_INTERNAL_SUBTRANSACTIONS OPTION_QUOTE_SHOW_CREATE*2
 
+/* options for UNION set by the yacc parser (stored in unit->union_option) */
+#define UNION_ALL		1
+
 /* Set if we are updating a non-transaction safe table */
 #define OPTION_STATUS_NO_TRANS_UPDATE 	OPTION_INTERNAL_SUBTRANSACTIONS*2