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Merge branch '10.1' into 10.2

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Sergei Golubchik
2017-03-30 12:48:42 +02:00
parent 9ec8500998 a00517ac97
commit da4d71d10d
1708 changed files with 29631 additions and 15718 deletions
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95
mysql-test/r/join_nested.result
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@ -1870,4 +1870,99 @@ f4
NULL
NULL
DROP TABLE t1,t2,t3,t4,t5;
#
# MDEV-7992: Nested left joins + 'not exists' optimization
#
CREATE TABLE t1(
K1 INT PRIMARY KEY,
Name VARCHAR(15)
);
INSERT INTO t1 VALUES
(1,'T1Row1'), (2,'T1Row2');
CREATE TABLE t2(
K2 INT PRIMARY KEY,
K1r INT,
rowTimestamp DATETIME,
Event VARCHAR(15)
);
INSERT INTO t2 VALUES
(1, 1, '2015-04-13 10:42:11' ,'T1Row1Event1'),
(2, 1, '2015-04-13 10:42:12' ,'T1Row1Event2'),
(3, 1, '2015-04-13 10:42:12' ,'T1Row1Event3');
SELECT t1a.*, t2a.*,
t2i.K2 AS K2B, t2i.K1r AS K1rB,
t2i.rowTimestamp AS rowTimestampB, t2i.Event AS EventB
FROM
t1 t1a JOIN t2 t2a ON t2a.K1r = t1a.K1
LEFT JOIN
( t1 t1i LEFT JOIN t2 t2i ON t2i.K1r = t1i.K1)
ON (t1i.K1 = 1) AND
(((t2i.K1r = t1a.K1 AND t2i.rowTimestamp > t2a.rowTimestamp ) OR
(t2i.rowTimestamp = t2a.rowTimestamp AND t2i.K2 > t2a.K2))
OR (t2i.K2 IS NULL))
WHERE
t2a.K1r = 1 AND t2i.K2 IS NULL;
K1 Name K2 K1r rowTimestamp Event K2B K1rB rowTimestampB EventB
1 T1Row1 3 1 2015-04-13 10:42:12 T1Row1Event3 NULL NULL NULL NULL
EXPLAIN EXTENDED SELECT t1a.*, t2a.*,
t2i.K2 AS K2B, t2i.K1r AS K1rB,
t2i.rowTimestamp AS rowTimestampB, t2i.Event AS EventB
FROM
t1 t1a JOIN t2 t2a ON t2a.K1r = t1a.K1
LEFT JOIN
( t1 t1i LEFT JOIN t2 t2i ON t2i.K1r = t1i.K1)
ON (t1i.K1 = 1) AND
(((t2i.K1r = t1a.K1 AND t2i.rowTimestamp > t2a.rowTimestamp ) OR
(t2i.rowTimestamp = t2a.rowTimestamp AND t2i.K2 > t2a.K2))
OR (t2i.K2 IS NULL))
WHERE
t2a.K1r = 1 AND t2i.K2 IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1a const PRIMARY PRIMARY 4 const 1 100.00
1 SIMPLE t2a ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t1i const PRIMARY PRIMARY 4 const 1 100.00 Using index
1 SIMPLE t2i ALL NULL NULL NULL NULL 3 100.00 Using where; Not exists
Warnings:
Note 1003 select 1 AS `K1`,'T1Row1' AS `Name`,`test`.`t2a`.`K2` AS `K2`,`test`.`t2a`.`K1r` AS `K1r`,`test`.`t2a`.`rowTimestamp` AS `rowTimestamp`,`test`.`t2a`.`Event` AS `Event`,`test`.`t2i`.`K2` AS `K2B`,`test`.`t2i`.`K1r` AS `K1rB`,`test`.`t2i`.`rowTimestamp` AS `rowTimestampB`,`test`.`t2i`.`Event` AS `EventB` from `test`.`t1` `t1a` join `test`.`t2` `t2a` left join (`test`.`t1` `t1i` left join `test`.`t2` `t2i` on(`test`.`t2i`.`K1r` = 1)) on(`test`.`t1i`.`K1` = 1 and (`test`.`t2i`.`K1r` = 1 and `test`.`t2i`.`rowTimestamp` > `test`.`t2a`.`rowTimestamp` or `test`.`t2i`.`rowTimestamp` = `test`.`t2a`.`rowTimestamp` and `test`.`t2i`.`K2` > `test`.`t2a`.`K2` or `test`.`t2i`.`K2` is null)) where `test`.`t2a`.`K1r` = 1 and `test`.`t2i`.`K2` is null
CREATE VIEW v1 AS
SELECT t2i.*
FROM t1 as t1i LEFT JOIN t2 as t2i ON t2i.K1r = t1i.K1
WHERE t1i.K1 = 1 ;
SELECT
t1a.*, t2a.*, t2b.K2 as K2B, t2b.K1r as K1rB,
t2b.rowTimestamp as rowTimestampB, t2b.Event as EventB
FROM
t1 as t1a JOIN t2 as t2a ON t2a.K1r = t1a.K1
LEFT JOIN
v1 as t2b
ON ((t2b.K1r = t1a.K1 AND t2b.rowTimestamp > t2a.rowTimestamp) OR
(t2b.rowTimestamp = t2a.rowTimestamp AND t2b.K2 > t2a.K2))
OR (t2b.K2 IS NULL)
WHERE
t1a.K1 = 1 AND
t2b.K2 IS NULL;
K1 Name K2 K1r rowTimestamp Event K2B K1rB rowTimestampB EventB
1 T1Row1 3 1 2015-04-13 10:42:12 T1Row1Event3 NULL NULL NULL NULL
EXPLAIN EXTENDED SELECT
t1a.*, t2a.*, t2b.K2 as K2B, t2b.K1r as K1rB,
t2b.rowTimestamp as rowTimestampB, t2b.Event as EventB
FROM
t1 as t1a JOIN t2 as t2a ON t2a.K1r = t1a.K1
LEFT JOIN
v1 as t2b
ON ((t2b.K1r = t1a.K1 AND t2b.rowTimestamp > t2a.rowTimestamp) OR
(t2b.rowTimestamp = t2a.rowTimestamp AND t2b.K2 > t2a.K2))
OR (t2b.K2 IS NULL)
WHERE
t1a.K1 = 1 AND
t2b.K2 IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1a const PRIMARY PRIMARY 4 const 1 100.00
1 SIMPLE t2a ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t1i const PRIMARY PRIMARY 4 const 1 100.00 Using index
1 SIMPLE t2i ALL NULL NULL NULL NULL 3 100.00 Using where; Not exists
Warnings:
Note 1003 select 1 AS `K1`,'T1Row1' AS `Name`,`t2a`.`K2` AS `K2`,`t2a`.`K1r` AS `K1r`,`t2a`.`rowTimestamp` AS `rowTimestamp`,`t2a`.`Event` AS `Event`,`test`.`t2i`.`K2` AS `K2B`,`test`.`t2i`.`K1r` AS `K1rB`,`test`.`t2i`.`rowTimestamp` AS `rowTimestampB`,`test`.`t2i`.`Event` AS `EventB` from `test`.`t1` `t1a` join `test`.`t2` `t2a` left join (`test`.`t1` `t1i` left join `test`.`t2` `t2i` on(`test`.`t2i`.`K1r` = 1)) on(`test`.`t1i`.`K1` = 1 and (`test`.`t2i`.`K1r` = 1 and `test`.`t2i`.`rowTimestamp` > `t2a`.`rowTimestamp` or `test`.`t2i`.`rowTimestamp` = `t2a`.`rowTimestamp` and `test`.`t2i`.`K2` > `t2a`.`K2` or `test`.`t2i`.`K2` is null)) where `t2a`.`K1r` = 1 and `test`.`t2i`.`K2` is null
DROP VIEW v1;
DROP TABLE t1,t2;
set optimizer_search_depth= @tmp_mdev621;