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Merge branch '10.4' into 10.5

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Sergei Golubchik
2021-02-23 13:01:27 +01:00
parent 1a0526e2f2 245d33db4e
commit f33e57a9e6
89 changed files with 1850 additions and 1359 deletions
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58
mysql-test/main/selectivity.result
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@@ -1882,4 +1882,62 @@ a b
set optimizer_use_condition_selectivity= @save_optimizer_use_condition_selectivity;
drop table t1;
# End of 10.1 tests
#
# MDEV-22583: Selectivity for BIT columns in filtered column for EXPLAIN is incorrect
#
SET optimizer_use_condition_selectivity=4;
SET histogram_size=255;
CREATE TABLE t1 (a BIT(32), b INT);
INSERT INTO t1 VALUES (80, 80), (81, 81), (82, 82);
ANALYZE TABLE t1 PERSISTENT FOR ALL;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
EXPLAIN EXTENDED SELECT * from t1 where t1.a >= 81;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 66.41 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where `test`.`t1`.`a` >= 81
SELECT HEX(a), b from t1 where t1.a >= 81;
HEX(a) b
51 81
52 82
set optimizer_use_condition_selectivity= @save_optimizer_use_condition_selectivity;
set histogram_size=@save_histogram_size;
DROP TABLE t1;
#
# MDEV-19474: Histogram statistics are used even with optimizer_use_condition_selectivity=3
#
CREATE TABLE t1(a int);
INSERT INTO t1 values (1),(2),(2),(3),(4);
SET optimizer_use_condition_selectivity=4;
SET histogram_size= 255;
set use_stat_tables='preferably';
ANALYZE TABLE t1 PERSISTENT FOR ALL;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
EXPLAIN EXTENDED SELECT * FROM t1 WHERE a=2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 39.84 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 2
SET optimizer_use_condition_selectivity=3;
# filtered should show 25 %
EXPLAIN EXTENDED SELECT * FROM t1 WHERE a=2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 25.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 2
FLUSH TABLES;
EXPLAIN EXTENDED SELECT * FROM t1 WHERE a=2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 25.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 2
set optimizer_use_condition_selectivity= @save_optimizer_use_condition_selectivity;
set histogram_size=@save_histogram_size;
set use_stat_tables= @save_use_stat_tables;
DROP TABLE t1;
# End of 10.2 tests
set @@global.histogram_size=@save_histogram_size;