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Fixed wrong reset of join_cache_level in join_outer*test

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Monty 2019-05-27 16:30:17 +03:00
parent 592dc59d7a
commit 617d34ae80
3 changed files with 29 additions and 26 deletions
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3
mysql-test/main/join_outer.result
View file

@ -2000,6 +2000,7 @@ INSERT INTO t2 VALUES
CREATE TABLE t3 ( a int, b int NOT NULL , PRIMARY KEY (b)) ; CREATE TABLE t3 ( a int, b int NOT NULL , PRIMARY KEY (b)) ;
INSERT INTO t3 VALUES INSERT INTO t3 VALUES
(0,6),(0,7),(0,8),(2,9),(0,10),(2,21),(0,22),(2,23),(2,24),(2,25); (0,6),(0,7),(0,8),(2,9),(0,10),(2,21),(0,22),(2,23),(2,24),(2,25);
set @save_join_cache_level= @@join_cache_level;
SET SESSION join_cache_level=4; SET SESSION join_cache_level=4;
EXPLAIN EXTENDED EXPLAIN EXTENDED
SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b; SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b;
@ -2018,7 +2019,7 @@ EXECUTE stmt;
b b a b b b a b
10 10 0 10 10 10 0 10
DEALLOCATE PREPARE stmt; DEALLOCATE PREPARE stmt;
SET SESSION join_cache_level=default; SET SESSION join_cache_level=@save_join_cache_level;
DROP TABLE t1,t2,t3; DROP TABLE t1,t2,t3;
# #
# LP bug #943543: LEFT JOIN converted to JOIN with # LP bug #943543: LEFT JOIN converted to JOIN with

3
mysql-test/main/join_outer.test
View file

@ -1575,6 +1575,7 @@ CREATE TABLE t3 ( a int, b int NOT NULL , PRIMARY KEY (b)) ;
INSERT INTO t3 VALUES INSERT INTO t3 VALUES
(0,6),(0,7),(0,8),(2,9),(0,10),(2,21),(0,22),(2,23),(2,24),(2,25); (0,6),(0,7),(0,8),(2,9),(0,10),(2,21),(0,22),(2,23),(2,24),(2,25);
set @save_join_cache_level= @@join_cache_level;
SET SESSION join_cache_level=4; SET SESSION join_cache_level=4;
EXPLAIN EXTENDED EXPLAIN EXTENDED
@ -1588,7 +1589,7 @@ EXECUTE stmt;
DEALLOCATE PREPARE stmt; DEALLOCATE PREPARE stmt;
SET SESSION join_cache_level=default; SET SESSION join_cache_level=@save_join_cache_level;
DROP TABLE t1,t2,t3; DROP TABLE t1,t2,t3;

49
mysql-test/main/join_outer_jcl6.result
View file

@ -2011,6 +2011,7 @@ INSERT INTO t2 VALUES
CREATE TABLE t3 ( a int, b int NOT NULL , PRIMARY KEY (b)) ; CREATE TABLE t3 ( a int, b int NOT NULL , PRIMARY KEY (b)) ;
INSERT INTO t3 VALUES INSERT INTO t3 VALUES
(0,6),(0,7),(0,8),(2,9),(0,10),(2,21),(0,22),(2,23),(2,24),(2,25); (0,6),(0,7),(0,8),(2,9),(0,10),(2,21),(0,22),(2,23),(2,24),(2,25);
set @save_join_cache_level= @@join_cache_level;
SET SESSION join_cache_level=4; SET SESSION join_cache_level=4;
EXPLAIN EXTENDED EXPLAIN EXTENDED
SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b; SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b;
@ -2029,7 +2030,7 @@ EXECUTE stmt;
b b a b b b a b
10 10 0 10 10 10 0 10
DEALLOCATE PREPARE stmt; DEALLOCATE PREPARE stmt;
SET SESSION join_cache_level=default; SET SESSION join_cache_level=@save_join_cache_level;
DROP TABLE t1,t2,t3; DROP TABLE t1,t2,t3;
# #
# LP bug #943543: LEFT JOIN converted to JOIN with # LP bug #943543: LEFT JOIN converted to JOIN with
@ -2086,7 +2087,7 @@ WHERE t1.pk BETWEEN 5 AND 6 AND t1.b IS NULL OR t1.b = 5
ORDER BY t1.b; ORDER BY t1.b;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ref idx idx 4 const 2 100.00 Using where 1 SIMPLE t1 ref idx idx 4 const 2 100.00 Using where
1 SIMPLE t2 ref c c 5 test.t1.a 2 100.00 1 SIMPLE t2 ref c c 5 test.t1.a 2 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
Warnings: Warnings:
Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2` join `test`.`t1` where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t1`.`b` = 5 order by `test`.`t1`.`b` Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2` join `test`.`t1` where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t1`.`b` = 5 order by `test`.`t1`.`b`
SELECT t1.b, t2.c, t2.d FROM t2 JOIN t1 ON t2.c = t1.a SELECT t1.b, t2.c, t2.d FROM t2 JOIN t1 ON t2.c = t1.a
@ -2094,16 +2095,16 @@ WHERE t1.pk BETWEEN 5 AND 6 AND t1.b IS NULL OR t1.b = 5
ORDER BY t1.b; ORDER BY t1.b;
b c d b c d
5 8 88 5 8 88
5 8 81
5 8 88 5 8 88
5 8 81 5 8 81
5 8 81
EXPLAIN EXTENDED EXPLAIN EXTENDED
SELECT t1.b, t2.c, t2.d FROM t2 LEFT JOIN t1 ON t2.c = t1.a SELECT t1.b, t2.c, t2.d FROM t2 LEFT JOIN t1 ON t2.c = t1.a
WHERE t1.pk BETWEEN 5 AND 6 AND t1.b IS NULL OR t1.b = 5 WHERE t1.pk BETWEEN 5 AND 6 AND t1.b IS NULL OR t1.b = 5
ORDER BY t1.b; ORDER BY t1.b;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ref PRIMARY,idx idx 4 const 2 100.00 Using where 1 SIMPLE t1 ref PRIMARY,idx idx 4 const 2 100.00 Using where
1 SIMPLE t2 ref c c 5 test.t1.a 2 100.00 1 SIMPLE t2 ref c c 5 test.t1.a 2 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
Warnings: Warnings:
Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2` join `test`.`t1` where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t1`.`b` = 5 order by `test`.`t1`.`b` Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2` join `test`.`t1` where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t1`.`b` = 5 order by `test`.`t1`.`b`
SELECT t1.b, t2.c, t2.d FROM t2 LEFT JOIN t1 ON t2.c = t1.a SELECT t1.b, t2.c, t2.d FROM t2 LEFT JOIN t1 ON t2.c = t1.a
@ -2111,9 +2112,9 @@ WHERE t1.pk BETWEEN 5 AND 6 AND t1.b IS NULL OR t1.b = 5
ORDER BY t1.b; ORDER BY t1.b;
b c d b c d
5 8 88 5 8 88
5 8 81
5 8 88 5 8 88
5 8 81 5 8 81
5 8 81
DROP TABLE t1,t2; DROP TABLE t1,t2;
# #
# Bug mdev-4336: LEFT JOIN with disjunctive # Bug mdev-4336: LEFT JOIN with disjunctive
@ -2229,10 +2230,10 @@ SELECT * FROM t1 LEFT JOIN t2 LEFT JOIN t3 ON i2 = i3 ON i1 = i3
WHERE d3 IS NULL; WHERE d3 IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 hash_ALL NULL #hash#$hj 5 test.t1.i1 2 100.00 Using where; Using join buffer (flat, BNLH join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join) 1 SIMPLE t3 hash_ALL NULL #hash#$hj 5 test.t1.i1 2 100.00 Using where; Using join buffer (incremental, BNLH join)
Warnings: Warnings:
Note 1003 select `test`.`t1`.`i1` AS `i1`,`test`.`t2`.`i2` AS `i2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`d3` AS `d3` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(`test`.`t2`.`i2` = `test`.`t1`.`i1` and `test`.`t3`.`i3` = `test`.`t1`.`i1`) where `test`.`t3`.`d3` = 0 or `test`.`t3`.`d3` is null Note 1003 select `test`.`t1`.`i1` AS `i1`,`test`.`t2`.`i2` AS `i2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`d3` AS `d3` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(`test`.`t2`.`i2` = `test`.`t1`.`i1` and `test`.`t3`.`i3` = `test`.`t1`.`i1` and `test`.`t1`.`i1` is not null and `test`.`t1`.`i1` is not null) where `test`.`t3`.`d3` = 0 or `test`.`t3`.`d3` is null
DROP TABLE t1,t2,t3; DROP TABLE t1,t2,t3;
# #
# Bug mdev-6705: wrong on expression after constant row substitution # Bug mdev-6705: wrong on expression after constant row substitution
@ -2250,9 +2251,9 @@ WHERE b IN (1,2,3) OR b = d;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00 1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 hash_ALL NULL #hash#$hj 5 const 2 100.00 Using where; Using join buffer (flat, BNLH join)
Warnings: Warnings:
Note 1003 select 10 AS `a`,8 AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t3`.`d` AS `d` from `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`d` = 10) where `test`.`t2`.`c` = 8 and `test`.`t3`.`d` = 8 Note 1003 select 10 AS `a`,8 AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t3`.`d` AS `d` from `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`d` = 10 and 10 is not null) where `test`.`t2`.`c` = 8 and `test`.`t3`.`d` = 8
SELECT * FROM t1 INNER JOIN t2 ON c = b LEFT JOIN t3 ON d = a SELECT * FROM t1 INNER JOIN t2 ON c = b LEFT JOIN t3 ON d = a
WHERE b IN (1,2,3) OR b = d; WHERE b IN (1,2,3) OR b = d;
a b c d a b c d
@ -2279,11 +2280,11 @@ id select_type table type possible_keys key key_len ref rows Extra
explain select * from t1 left join t2 on t2.b is null; explain select * from t1 left join t2 on t2.b is null;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 9 1 SIMPLE t1 ALL NULL NULL NULL NULL 9
1 SIMPLE t2 ref b b 5 const 780 Using where 1 SIMPLE t2 ref b b 5 const 780 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
explain select * from t1 left join t2 on t2.c is null; explain select * from t1 left join t2 on t2.c is null;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 9 1 SIMPLE t1 ALL NULL NULL NULL NULL 9
1 SIMPLE t2 ref c c 5 const 393 Using where 1 SIMPLE t2 ref c c 5 const 393 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
drop table t1,t2; drop table t1,t2;
# #
# MDEV-10006: optimizer doesn't convert outer join to inner on views with WHERE clause # MDEV-10006: optimizer doesn't convert outer join to inner on views with WHERE clause
@ -2325,8 +2326,8 @@ LEFT JOIN t3 on t2.i2 = t3.i3
WHERE v3 = 4; WHERE v3 = 4;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t3 ref PRIMARY,v3 v3 5 const 1 100.00 1 SIMPLE t3 ref PRIMARY,v3 v3 5 const 1 100.00
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
Warnings: Warnings:
Note 1003 select `test`.`t1`.`i1` AS `i1`,`test`.`t1`.`v1` AS `v1`,`test`.`t2`.`i2` AS `i2`,`test`.`t2`.`v2` AS `v2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`v3` AS `v3` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`v3` = 4 and `test`.`t1`.`i1` = `test`.`t3`.`i3` and `test`.`t2`.`i2` = `test`.`t3`.`i3` Note 1003 select `test`.`t1`.`i1` AS `i1`,`test`.`t1`.`v1` AS `v1`,`test`.`t2`.`i2` AS `i2`,`test`.`t2`.`v2` AS `v2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`v3` AS `v3` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`v3` = 4 and `test`.`t1`.`i1` = `test`.`t3`.`i3` and `test`.`t2`.`i2` = `test`.`t3`.`i3`
# This should have the same join order like the query above: # This should have the same join order like the query above:
@ -2343,8 +2344,8 @@ AND 1 = 1
WHERE v3 = 4; WHERE v3 = 4;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t3 ref PRIMARY,v3 v3 5 const 1 100.00 1 SIMPLE t3 ref PRIMARY,v3 v3 5 const 1 100.00
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t3.i3 1 100.00 Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
Warnings: Warnings:
Note 1003 select `test`.`t1`.`i1` AS `i1`,`test`.`t1`.`v1` AS `v1`,`test`.`t2`.`i2` AS `i2`,`test`.`t2`.`v2` AS `v2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`v3` AS `v3` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`v3` = 4 and `test`.`t1`.`i1` = `test`.`t3`.`i3` and `test`.`t2`.`i2` = `test`.`t3`.`i3` Note 1003 select `test`.`t1`.`i1` AS `i1`,`test`.`t1`.`v1` AS `v1`,`test`.`t2`.`i2` AS `i2`,`test`.`t2`.`v2` AS `v2`,`test`.`t3`.`i3` AS `i3`,`test`.`t3`.`v3` AS `v3` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t3`.`v3` = 4 and `test`.`t1`.`i1` = `test`.`t3`.`i3` and `test`.`t2`.`i2` = `test`.`t3`.`i3`
drop table t1,t2,t3; drop table t1,t2,t3;
@ -2367,9 +2368,9 @@ ON t1.x = t2.x
WHERE IFNULL(t2.x,0)=0; WHERE IFNULL(t2.x,0)=0;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 hash_ALL NULL #hash#$hj 5 test.t1.x 2 100.00 Using where; Using join buffer (flat, BNLH join)
Warnings: Warnings:
Note 1003 select `test`.`t1`.`x` AS `x`,`test`.`t2`.`x` AS `x`,ifnull(`test`.`t2`.`x`,0) AS `IFNULL(t2.x,0)`,`f`(`test`.`t2`.`x`,0) AS `f(t2.x,0)` from `test`.`t` `t1` left join `test`.`t` `t2` on(`test`.`t2`.`x` = `test`.`t1`.`x`) where ifnull(`test`.`t2`.`x`,0) = 0 Note 1003 select `test`.`t1`.`x` AS `x`,`test`.`t2`.`x` AS `x`,ifnull(`test`.`t2`.`x`,0) AS `IFNULL(t2.x,0)`,`f`(`test`.`t2`.`x`,0) AS `f(t2.x,0)` from `test`.`t` `t1` left join `test`.`t` `t2` on(`test`.`t2`.`x` = `test`.`t1`.`x` and `test`.`t1`.`x` is not null) where ifnull(`test`.`t2`.`x`,0) = 0
SELECT t1.x, t2.x, IFNULL(t2.x,0), f(t2.x,0) SELECT t1.x, t2.x, IFNULL(t2.x,0), f(t2.x,0)
FROM t t1 LEFT JOIN t t2 FROM t t1 LEFT JOIN t t2
ON t1.x = t2.x ON t1.x = t2.x
@ -2383,9 +2384,9 @@ ON t1.x = t2.x
WHERE f(t2.x,0)=0; WHERE f(t2.x,0)=0;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 hash_ALL NULL #hash#$hj 5 test.t1.x 2 100.00 Using where; Using join buffer (flat, BNLH join)
Warnings: Warnings:
Note 1003 select `test`.`t1`.`x` AS `x`,`test`.`t2`.`x` AS `x`,ifnull(`test`.`t2`.`x`,0) AS `IFNULL(t2.x,0)`,`f`(`test`.`t2`.`x`,0) AS `f(t2.x,0)` from `test`.`t` `t1` left join `test`.`t` `t2` on(`test`.`t2`.`x` = `test`.`t1`.`x`) where `f`(`test`.`t2`.`x`,0) = 0 Note 1003 select `test`.`t1`.`x` AS `x`,`test`.`t2`.`x` AS `x`,ifnull(`test`.`t2`.`x`,0) AS `IFNULL(t2.x,0)`,`f`(`test`.`t2`.`x`,0) AS `f(t2.x,0)` from `test`.`t` `t1` left join `test`.`t` `t2` on(`test`.`t2`.`x` = `test`.`t1`.`x` and `test`.`t1`.`x` is not null) where `f`(`test`.`t2`.`x`,0) = 0
drop function f; drop function f;
drop table t; drop table t;
CREATE TABLE t1 ( CREATE TABLE t1 (
@ -2423,9 +2424,9 @@ FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2
WHERE IFNULL(t2.col3,0) = 0; WHERE IFNULL(t2.col3,0) = 0;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 hash_ALL NULL #hash#$hj 17 test.t1.col1 2 100.00 Using where; Using join buffer (flat, BNLH join)
Warnings: Warnings:
Note 1003 select `test`.`t1`.`col1` AS `col1`,`test`.`t2`.`col1` AS `col1`,`test`.`t2`.`col3` AS `col3` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`col2` = `test`.`t1`.`col1`) where ifnull(`test`.`t2`.`col3`,0) = 0 Note 1003 select `test`.`t1`.`col1` AS `col1`,`test`.`t2`.`col1` AS `col1`,`test`.`t2`.`col3` AS `col3` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`col2` = `test`.`t1`.`col1` and `test`.`t1`.`col1` is not null) where ifnull(`test`.`t2`.`col3`,0) = 0
SELECT t1.col1, t2.col1, t2.col3 SELECT t1.col1, t2.col1, t2.col3
FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2 FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2
WHERE f1(t2.col3,0) = 0; WHERE f1(t2.col3,0) = 0;
@ -2437,9 +2438,9 @@ FROM t1 LEFT OUTER JOIN t2 ON t1.col1 = t2.col2
WHERE f1(t2.col3,0) = 0; WHERE f1(t2.col3,0) = 0;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t2 hash_ALL NULL #hash#$hj 17 test.t1.col1 2 100.00 Using where; Using join buffer (flat, BNLH join)
Warnings: Warnings:
Note 1003 select `test`.`t1`.`col1` AS `col1`,`test`.`t2`.`col1` AS `col1`,`test`.`t2`.`col3` AS `col3` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`col2` = `test`.`t1`.`col1`) where `f1`(`test`.`t2`.`col3`,0) = 0 Note 1003 select `test`.`t1`.`col1` AS `col1`,`test`.`t2`.`col1` AS `col1`,`test`.`t2`.`col3` AS `col3` from `test`.`t1` left join `test`.`t2` on(`test`.`t2`.`col2` = `test`.`t1`.`col1` and `test`.`t1`.`col1` is not null) where `f1`(`test`.`t2`.`col3`,0) = 0
DROP FUNCTION f1; DROP FUNCTION f1;
DROP TABLE t1,t2; DROP TABLE t1,t2;
# #