database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

Merge 10.3 into 10.4

Browse Source
This commit is contained in:
Marko Mäkelä
2019-11-06 13:44:56 +02:00
parent d9899ce671 908ca4668d
commit 928abd6967
27 changed files with 429 additions and 123 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
mysql-test/main/selectivity_innodb.result
View File

@@ -1763,6 +1763,63 @@ a
1991
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
DROP TABLE t1;
#
# MDEV-20424: New default value for optimizer_use_condition-selectivity
# leads to bad plan
#
create table t1(a int, b int, c int, d int, key(a,b));
insert into t1 select 50,seq-1,seq-1,seq from seq_1_to_10;
insert into t1 select seq-1,seq-1,seq-1,seq from seq_1_to_100 limit 90;
create table t2(a int, b int, c int, primary key(a));
insert into t2 select seq-1,seq-1,seq-1 from seq_1_to_100;
create table t3(a int, b int, c int, primary key(a));
insert into t3 select seq-1,seq-1,seq-1 from seq_1_to_100 limit 30;
set optimizer_use_condition_selectivity=1;
explain extended select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
where t1.c = t2.a AND t1.d = t3.a and t1.a = 50 and t1.b <= 100;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 10 NULL 11 100.00 Using index condition; Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a` = `test`.`t1`.`c` and `test`.`t3`.`a` = `test`.`t1`.`d` and `test`.`t1`.`a` = 50 and `test`.`t1`.`b` <= 100
select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
where t1.c = t2.a AND t1.d = t3.a and t1.a = 50 and t1.b <= 100;
b a a b
0 0 1 1
1 1 2 2
2 2 3 3
3 3 4 4
4 4 5 5
5 5 6 6
6 6 7 7
7 7 8 8
8 8 9 9
9 9 10 10
set optimizer_use_condition_selectivity=2;
explain extended select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
where t1.c = t2.a AND t1.d = t3.a and t1.a = 50 and t1.b <= 100;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 10 NULL 11 11.00 Using index condition; Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a` = `test`.`t1`.`c` and `test`.`t3`.`a` = `test`.`t1`.`d` and `test`.`t1`.`a` = 50 and `test`.`t1`.`b` <= 100
select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
where t1.c = t2.a AND t1.d = t3.a and t1.a = 50 and t1.b <= 100;
b a a b
0 0 1 1
1 1 2 2
2 2 3 3
3 3 4 4
4 4 5 5
5 5 6 6
6 6 7 7
7 7 8 8
8 8 9 9
9 9 10 10
set optimizer_use_condition_selectivity= @@optimizer_use_condition_selectivity;
drop table t1,t2,t3;
# End of 10.1 tests
set @@global.histogram_size=@save_histogram_size;
set optimizer_switch=@save_optimizer_switch_for_selectivity_test;