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Merge branch 'github/10.1' into 10.2

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This commit is contained in:
Sergei Golubchik
2018-02-06 14:50:50 +01:00
parent 60f51af755 0c25e58db6
commit 4771ae4b22
466 changed files with 9366 additions and 3618 deletions
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84
mysql-test/r/func_isnull.result
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@ -24,3 +24,87 @@ INSERT INTO t1( id ) VALUES ( NULL );
SELECT t1.id FROM t1 WHERE (id is not null and id is null );
id
DROP TABLE t1;
# End of 5.1 tests
#
# MDEV-14911: IS NULL for field from mergeable view
#
CREATE TABLE t1 (d1 datetime NOT NULL);
INSERT INTO t1 VALUES
('0000-00-00 00:00:00'), ('0000-00-00 00:00:00'), ('1979-09-03 20:49:36');
SELECT * FROM t1;
d1
0000-00-00 00:00:00
0000-00-00 00:00:00
1979-09-03 20:49:36
SELECT * FROM t1 WHERE d1 IS NULL;
d1
0000-00-00 00:00:00
0000-00-00 00:00:00
EXPLAIN EXTENDED SELECT * FROM t1 WHERE d1 IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`d1` AS `d1` from `test`.`t1` where `test`.`t1`.`d1` = 0
SELECT count(*) FROM t1 WHERE d1 IS NULL;
count(*)
2
CREATE VIEW v1 AS (SELECT * FROM t1);
SELECT * FROM v1;
d1
0000-00-00 00:00:00
0000-00-00 00:00:00
1979-09-03 20:49:36
SELECT * FROM v1 WHERE d1 IS NULL;
d1
0000-00-00 00:00:00
0000-00-00 00:00:00
EXPLAIN EXTENDED SELECT * FROM v1 WHERE d1 IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`d1` AS `d1` from `test`.`t1` where `test`.`t1`.`d1` = 0
SELECT count(*) FROM v1 WHERE d1 IS NULL;
count(*)
2
SET @save_optimizer_switch=@@optimizer_switch;
SET SESSION optimizer_switch='derived_merge=off';
SELECT count(*) FROM ( SELECT * FROM t1 ) AS a1 WHERE d1 IS NULL;
count(*)
2
SET SESSION optimizer_switch='derived_merge=on';
SELECT count(*) FROM ( SELECT * FROM t1 ) AS a1 WHERE d1 IS NULL;
count(*)
2
SET optimizer_switch=@save_optimizer_switch;
CREATE TABLE t2 (d1 datetime NOT NULL);
INSERT INTO t2 VALUES
('1980-09-03 20:49:36'), ('0000-00-00 00:00:00'), ('1979-09-03 20:49:36');
SELECT * FROM t2 LEFT JOIN t1 ON t2.d1=t1.d1 WHERE t1.d1 IS NULL;
d1 d1
0000-00-00 00:00:00 0000-00-00 00:00:00
0000-00-00 00:00:00 0000-00-00 00:00:00
1980-09-03 20:49:36 NULL
EXPLAIN EXTENDED
SELECT * FROM t2 LEFT JOIN t1 ON t2.d1=t1.d1 WHERE t1.d1 IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`d1` AS `d1`,`test`.`t1`.`d1` AS `d1` from `test`.`t2` left join `test`.`t1` on(`test`.`t1`.`d1` = `test`.`t2`.`d1`) where `test`.`t1`.`d1` = 0 or `test`.`t1`.`d1` is null
SELECT * FROM t2 LEFT JOIN v1 ON t2.d1=v1.d1 WHERE v1.d1 IS NULL;
d1 d1
0000-00-00 00:00:00 0000-00-00 00:00:00
0000-00-00 00:00:00 0000-00-00 00:00:00
1980-09-03 20:49:36 NULL
EXPLAIN EXTENDED
SELECT * FROM t2 LEFT JOIN v1 ON t2.d1=v1.d1 WHERE v1.d1 IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`d1` AS `d1`,`test`.`t1`.`d1` AS `d1` from `test`.`t2` left join (`test`.`t1`) on(`test`.`t1`.`d1` = `test`.`t2`.`d1`) where `test`.`t1`.`d1` = 0 or `test`.`t1`.`d1` is null
DROP VIEW v1;
DROP TABLE t1,t2;
#
# End of 5.5 tests
#