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Commit 19a48cdf authored by Mattias Jonsson's avatar Mattias Jonsson
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Bug#35745: SELECT COUNT(*) is not correct for some partitioned tables. 

problem was that ha_partition::records was not implemented, thus
using the default handler::records, which is not correct if the engine
does not support HA_STATS_RECORDS_IS_EXACT.
Solution was to implement ha_partition::records as a wrapper around
the underlying partitions records.

The rows column in explain partitions will now include the total
number of records in the partitioned table.

(recommit after removing out-commented code)
parent 574eefeb
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Showing with 111 additions and 82 deletions
mysql-test/r/partition.result
View file @ 19a48cdf
......@@ -1131,7 +1131,7 @@ NULL
2
explain partitions select * from t1 where a is null or a < 0 or a > 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pn,p2 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t1 pn,p2 ALL NULL NULL NULL NULL 4 Using where
drop table t1;
CREATE TABLE t1 (id INT NOT NULL PRIMARY KEY, name VARCHAR(20))
ENGINE=MyISAM DEFAULT CHARSET=latin1
......
mysql-test/r/partition_hash.result
View file @ 19a48cdf
......@@ -69,25 +69,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2,p3 ALL NULL NULL NULL NULL 9 Using where
explain partitions select * from t1 where a is null or (a >= 5 and a <= 7);
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p2,p3 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t1 p0,p2,p3 ALL NULL NULL NULL NULL 9 Using where
explain partitions select * from t1 where a is null;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 9 Using where
explain partitions select * from t1 where a is not null;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2,p3 ALL NULL NULL NULL NULL 9 Using where
explain partitions select * from t1 where a >= 1 and a < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 9 Using where
explain partitions select * from t1 where a >= 3 and a <= 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 p1,p2 ALL NULL NULL NULL NULL 9 Using where
explain partitions select * from t1 where a > 2 and a < 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t1 p1 ALL NULL NULL NULL NULL 9 Using where
explain partitions select * from t1 where a > 3 and a <= 6;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2,p3 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 p2,p3 ALL NULL NULL NULL NULL 9 Using where
explain partitions select * from t1 where a > 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2,p3 ALL NULL NULL NULL NULL 9 Using where
......
mysql-test/r/partition_pruning.result
View file @ 19a48cdf
This diff is collapsed.
mysql-test/r/partition_range.result
View file @ 19a48cdf
......@@ -57,13 +57,13 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pnull system NULL NULL NULL NULL 1
explain partitions select * from t1 where a >= 0;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t1 p0,p1 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t1 where a < 0;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t1 where a <= 0;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pnull,p0 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t1 pnull,p0 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t1 where a > 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......@@ -96,16 +96,16 @@ select * from t1 where a > 1;
a b
explain partitions select * from t1 where a is null;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pnull_pnullsp0,pnull_pnullsp1 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t1 pnull_pnullsp0,pnull_pnullsp1 ALL NULL NULL NULL NULL 6 Using where
explain partitions select * from t1 where a >= 0;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0_p0sp0,p0_p0sp1,p1_p1sp0,p1_p1sp1 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 p0_p0sp0,p0_p0sp1,p1_p1sp0,p1_p1sp1 ALL NULL NULL NULL NULL 6 Using where
explain partitions select * from t1 where a < 0;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pnull_pnullsp0,pnull_pnullsp1 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t1 pnull_pnullsp0,pnull_pnullsp1 ALL NULL NULL NULL NULL 6 Using where
explain partitions select * from t1 where a <= 0;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pnull_pnullsp0,pnull_pnullsp1,p0_p0sp0,p0_p0sp1 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 pnull_pnullsp0,pnull_pnullsp1,p0_p0sp0,p0_p0sp1 ALL NULL NULL NULL NULL 6 Using where
explain partitions select * from t1 where a > 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
......
mysql-test/suite/parts/r/partition_alter3_innodb.result
View file @ 19a48cdf
......@@ -134,7 +134,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part1 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t1 part1 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -153,7 +153,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -169,7 +169,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -197,7 +197,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p6 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 p6 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -212,7 +212,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -227,7 +227,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -242,7 +242,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -257,7 +257,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part1 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t1 part1 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -272,7 +272,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 10 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -391,7 +391,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -410,7 +410,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -429,7 +429,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p6 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 p6 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -455,7 +455,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -473,7 +473,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -491,7 +491,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 10 Using where
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 23 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -509,7 +509,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -527,7 +527,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -545,7 +545,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 10 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......
mysql-test/suite/parts/r/partition_alter3_myisam.result
View file @ 19a48cdf
......@@ -148,7 +148,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part1 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t1 part1 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -175,7 +175,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -207,7 +207,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -249,7 +249,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p6 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 p6 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -276,7 +276,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -301,7 +301,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -324,7 +324,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -345,7 +345,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part1 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t1 part1 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -364,7 +364,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) FROM t1 WHERE f_date = '1000-02-10';
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 10 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -491,7 +491,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -518,7 +518,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -553,7 +553,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p6 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 p6 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -593,7 +593,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 4 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -623,7 +623,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -651,7 +651,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 10 Using where
1 SIMPLE t1 p4 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -677,7 +677,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 5 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -701,7 +701,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 7 Using where
1 SIMPLE t1 part7 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......@@ -723,7 +723,7 @@ MYSQLTEST_VARDIR/master-data/test/t1.frm
MYSQLTEST_VARDIR/master-data/test/t1.par
EXPLAIN PARTITIONS SELECT COUNT(*) <> 1 FROM t1 WHERE f_int1 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 10 Using where
1 SIMPLE t1 p0 ALL NULL NULL NULL NULL 20 Using where
# check read single success: 1
# check read all success: 1
# check read row by row success: 1
......
sql/ha_partition.cc
View file @ 19a48cdf
......@@ -5364,6 +5364,34 @@ ha_rows ha_partition::estimate_rows_upper_bound()
}
/**
Number of rows in table. see handler.h
SYNOPSIS
records()
RETURN VALUE
Number of total rows in a partitioned table.
*/
ha_rows ha_partition::records()
{
ha_rows rows, tot_rows= 0;
handler **file;
DBUG_ENTER("ha_partition::records");
file= m_file;
do
{
rows= (*file)->records();
if (rows == HA_POS_ERROR)
DBUG_RETURN(HA_POS_ERROR);
tot_rows+= rows;
} while (*(++file));
DBUG_RETURN(tot_rows);
}
/*
Is it ok to switch to a new engine for this table
......
sql/ha_partition.h
View file @ 19a48cdf
......@@ -531,6 +531,7 @@ class ha_partition :public handler
underlying handlers must have the same implementation for it to work.
*/
virtual uint8 table_cache_type();
virtual ha_rows records();
/*
-------------------------------------------------------------------------
......
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