Current File : //usr/share/mysql-test/suite/innodb/r/innodb_copy_col_in_partition.result
CREATE TABLE t (id INT, a INT, b INT, KEY (a), KEY (b)) ENGINE=INNODB
PARTITION BY HASH (id) PARTITIONS 10;
insert into t values (0,4,1);
insert into t values (6,2,5);
insert into t values (6,7,5);
insert into t values (2,4,6);
insert into t values (3,5,6);
insert into t values (1,3,9);
insert into t values (1,3,9);
insert into t values (3,4,6);
insert into t values (4,4,6);
EXPLAIN SELECT SQL_NO_CACHE COUNT(*) FROM t WHERE a=4 AND b=6;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t index_merge a,b a,b 5,5 NULL 7 Using intersect(a,b); Using where; Using index
EXPLAIN SELECT SQL_NO_CACHE a,b FROM t WHERE a=4 AND b=6;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t index_merge a,b a,b 5,5 NULL 7 Using intersect(a,b); Using where; Using index
SELECT SQL_NO_CACHE * FROM t WHERE a=4 AND b=6 ORDER BY id;
id a b
2 4 6
3 4 6
4 4 6
SELECT SQL_NO_CACHE COUNT(*) FROM t WHERE a=4 AND b=6;
COUNT(*)
3
DROP TABLE t;
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