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MDEV-27062: Make histogram_type=JSON_HB the new default

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Sergei Petrunia
2021-11-29 16:11:18 +03:00
parent eb6a9ad705
commit be55ad0d34
18 changed files with 119 additions and 119 deletions
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12
mysql-test/main/selectivity.result
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@@ -1372,14 +1372,14 @@ test.t2 analyze status Table is already up to date
explain extended
select * from t1 straight_join t2 where t1.a=t2.a and t1.a<10;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 1.96 Using where
1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 1.00 Using where
1 SIMPLE t2 ref a a 5 test.t1.a 10 100.00
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` straight_join `test`.`t2` where `test`.`t2`.`a` = `test`.`t1`.`a` and `test`.`t1`.`a` < 10
explain extended
select * from t1 straight_join t2 where t1.a=t2.a and t2.a<10;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 1.96 Using where
1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 1.00 Using where
1 SIMPLE t2 ref a a 5 test.t1.a 10 100.00
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` straight_join `test`.`t2` where `test`.`t2`.`a` = `test`.`t1`.`a` and `test`.`t1`.`a` < 10
@@ -1649,12 +1649,12 @@ test.t1 analyze status Table is already up to date
# Check what info the optimizer has about selectivities
explain extended select * from t1 use index () where a in (17,51,5);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 3.90 Using where
1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 2.90 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` USE INDEX () where `test`.`t1`.`a` in (17,51,5)
explain extended select * from t1 use index () where b=2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 5.47 Using where
1 SIMPLE t1 ALL NULL NULL NULL NULL 1000 5.90 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` USE INDEX () where `test`.`t1`.`b` = 2
# Now, the equality is used for ref access, while the range condition
@@ -1895,7 +1895,7 @@ 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
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 66.67 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;
@@ -1919,7 +1919,7 @@ 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
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 40.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` = 2
SET optimizer_use_condition_selectivity=3;