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Merge branch '10.1' into 10.2

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This commit is contained in:
Oleksandr Byelkin
2018-09-14 08:47:22 +02:00
parent 3866589308 f1bcfbb437
commit 28f08d3753
321 changed files with 6852 additions and 195819 deletions
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48
mysql-test/r/selectivity_innodb.result
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@ -789,9 +789,9 @@ set optimizer_use_condition_selectivity=3;
explain extended
select * from t1 where a < 1 and a > 7;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where 0
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` < 1 and `test`.`t1`.`a` > 7
select * from t1 where a < 1 and a > 7;
a
drop table t1;
@ -1516,9 +1516,9 @@ col1
explain extended
select * from t2 where col1 < 'b' and col1 > 'd';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
Warnings:
Note 1003 select `test`.`t2`.`col1` AS `col1` from `test`.`t2` where 0
Note 1003 select `test`.`t2`.`col1` AS `col1` from `test`.`t2` where `test`.`t2`.`col1` < 'b' and `test`.`t2`.`col1` > 'd'
drop table t1,t2;
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
set use_stat_tables=@save_use_stat_tables;
@ -1605,6 +1605,46 @@ drop table t1,t0;
set histogram_size=@save_histogram_size;
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
set use_stat_tables=@save_use_stat_tables;
#
# MDEV-15306: Wrong/Unexpected result with the value
# optimizer_use_condition_selectivity set to 4
#
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
CREATE FUNCTION f1() RETURNS INT DETERMINISTIC
BEGIN
SET @cnt := @cnt + 1;
RETURN 1;
END;|
set @save_optimizer_use_condition_selectivity=@@optimizer_use_condition_selectivity;
set @save_use_stat_tables= @@use_stat_tables;
set @@use_stat_tables='complementary';
set @@optimizer_use_condition_selectivity=4;
SET @cnt= 0;
SELECT * FROM t1 WHERE a = f1();
a
1
SELECT @cnt;
@cnt
1
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
SET @cnt := 0;
set @@optimizer_use_condition_selectivity=4;
SELECT * FROM t1 WHERE a = f1();
a
1
SELECT @cnt;
@cnt
2
alter table t1 force;
set @@use_stat_tables= @save_use_stat_tables;
set @@optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
drop table t1;
drop function f1;
set optimizer_switch=@save_optimizer_switch_for_selectivity_test;
set @tmp_ust= @@use_stat_tables;
set @tmp_oucs= @@optimizer_use_condition_selectivity;