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fixed convertion and handling IN subqueries with rows (BUG#11867)

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mysql-test/r/subselect.result:
  testst of IN subqueries with row
mysql-test/t/subselect.test:
  tests of ion subqueries with row
sql/item.h:
  add method to prevent of removing Item_ref_null_helper from HAVING
sql/item_cmpfunc.h:
  Prevented removing of Item_test_isnotnull from HAVING
sql/item_subselect.cc:
  fixed converting row IN subqueries
sql/sql_select.cc:
  fixed debug print
This commit is contained in:
unknown
2005-08-13 07:45:14 +03:00
parent dbfc9b741d
commit 19b4760f19
6 changed files with 226 additions and 47 deletions
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60
mysql-test/r/subselect.result
View File

@ -2742,13 +2742,26 @@ one two flag
5 6 N
7 8 N
insert into t2 values (null,null,'N');
insert into t2 values (null,3,'0');
insert into t2 values (null,5,'0');
insert into t2 values (10,null,'0');
insert into t1 values (10,3,'0');
insert into t1 values (10,5,'0');
insert into t1 values (10,10,'0');
SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N') as 'test' from t1;
one two test
1 2 0
2 3 0
3 4 0
1 2 NULL
2 3 NULL
3 4 NULL
5 6 1
7 8 1
10 3 NULL
10 5 NULL
10 10 NULL
SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N');
one two
5 6
7 8
SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N' group by one,two) as 'test' from t1;
one two test
1 2 NULL
@ -2756,6 +2769,47 @@ one two test
3 4 NULL
5 6 1
7 8 1
10 3 NULL
10 5 NULL
10 10 NULL
SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1;
one two test
1 2 0
2 3 NULL
3 4 0
5 6 0
7 8 0
10 3 NULL
10 5 NULL
10 10 NULL
SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
one two test
1 2 0
2 3 NULL
3 4 0
5 6 0
7 8 0
10 3 NULL
10 5 NULL
10 10 NULL
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 Using where
Warnings:
Note 1003 select test.t1.one AS `one`,test.t1.two AS `two`,<in_optimizer>((test.t1.one,test.t1.two),<exists>(select test.t2.one AS `one`,test.t2.two AS `two` from test.t2 where ((test.t2.flag = _latin1'0') and ((<cache>(test.t1.one) = test.t2.one) or isnull(test.t2.one)) and ((<cache>(test.t1.two) = test.t2.two) or isnull(test.t2.two))) having (<is_not_null_test>(test.t2.one) and <is_not_null_test>(test.t2.two)))) AS `test` from test.t1
explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 Using where
Warnings:
Note 1003 select test.t1.one AS `one`,test.t1.two AS `two` from test.t1 where <in_optimizer>((test.t1.one,test.t1.two),<exists>(select test.t2.one AS `one`,test.t2.two AS `two` from test.t2 where ((test.t2.flag = _latin1'N') and (<cache>(test.t1.one) = test.t2.one) and (<cache>(test.t1.two) = test.t2.two))))
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 8
2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 9 Using where; Using temporary; Using filesort
Warnings:
Note 1003 select test.t1.one AS `one`,test.t1.two AS `two`,<in_optimizer>((test.t1.one,test.t1.two),<exists>(select test.t2.one AS `one`,test.t2.two AS `two` from test.t2 where (test.t2.flag = _latin1'0') group by test.t2.one,test.t2.two having (((<cache>(test.t1.one) = test.t2.one) or isnull(test.t2.one)) and ((<cache>(test.t1.two) = test.t2.two) or isnull(test.t2.two)) and <is_not_null_test>(test.t2.one) and <is_not_null_test>(test.t2.two)))) AS `test` from test.t1
DROP TABLE t1,t2;
CREATE TABLE t1 (a char(5), b char(5));
INSERT INTO t1 VALUES (NULL,'aaa'), ('aaa','aaa');

13
mysql-test/t/subselect.test
View File

@ -1769,9 +1769,20 @@ SELECT * FROM t1
WHERE ROW(one,two) IN (SELECT DISTINCT one,two FROM t1 WHERE flag = 'N');
insert into t2 values (null,null,'N');
insert into t2 values (null,3,'0');
insert into t2 values (null,5,'0');
insert into t2 values (10,null,'0');
insert into t1 values (10,3,'0');
insert into t1 values (10,5,'0');
insert into t1 values (10,10,'0');
SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N') as 'test' from t1;
SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N');
SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N' group by one,two) as 'test' from t1;
SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1;
SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0') as 'test' from t1;
explain extended SELECT one,two from t1 where ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = 'N');
explain extended SELECT one,two,ROW(one,two) IN (SELECT one,two FROM t2 WHERE flag = '0' group by one,two) as 'test' from t1;
DROP TABLE t1,t2;
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