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Merge branch '10.2' into 10.3

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This commit is contained in:
Sergei Golubchik
2021-02-22 21:25:16 +01:00
parent ca126d96f5 3c021485c9
commit 0ab1e3914c
62 changed files with 1416 additions and 1296 deletions
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45
mysql-test/main/selectivity.test
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@ -1286,6 +1286,51 @@ drop table t1;
--echo # End of 10.1 tests
--echo #
--echo # MDEV-22583: Selectivity for BIT columns in filtered column for EXPLAIN is incorrect
--echo #
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;
EXPLAIN EXTENDED SELECT * from t1 where t1.a >= 81;
SELECT HEX(a), b from t1 where t1.a >= 81;
set optimizer_use_condition_selectivity= @save_optimizer_use_condition_selectivity;
set histogram_size=@save_histogram_size;
DROP TABLE t1;
--echo #
--echo # MDEV-19474: Histogram statistics are used even with optimizer_use_condition_selectivity=3
--echo #
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;
EXPLAIN EXTENDED SELECT * FROM t1 WHERE a=2;
SET optimizer_use_condition_selectivity=3;
--echo # filtered should show 25 %
EXPLAIN EXTENDED SELECT * FROM t1 WHERE a=2;
FLUSH TABLES;
EXPLAIN EXTENDED SELECT * FROM t1 WHERE 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;
--echo # End of 10.2 tests
#
# Clean up
#