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Bug #16255: Subquery in WHERE (the cset by Georgi Kodinov)

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Must not use Item_direct_ref in HAVING because it points to
 the new value (witch is not yet calculated for the first row).
This commit is contained in:
sergefp@mysql.com
2006-08-24 19:14:36 +04:00
parent 86c5cad4e0
commit d4cacdb5cc
3 changed files with 28 additions and 5 deletions
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11
mysql-test/r/subselect.result
View File

@@ -2895,3 +2895,14 @@ select * from t1 where NOT(s1 = ALL (select s1/s1 from t1));
s1 s1
2 2
drop table t1; drop table t1;
CREATE TABLE t1 (a INT, b INT, PRIMARY KEY (a,b));
INSERT INTO t1 VALUES(26, 1), (48, 2);
SELECT * FROM t1 r WHERE (r.a,r.b) IN (SELECT a,MAX(b) FROM t1 GROUP BY a);
a b
26 1
48 2
SELECT * FROM t1 r WHERE (r.a,r.b) IN (SELECT a + 0,MAX(b) FROM t1 GROUP BY a);
a b
26 1
48 2
DROP TABLE t1;

12
mysql-test/t/subselect.test
View File

@@ -1861,4 +1861,16 @@ select * from t1 where NOT(s1+1 = ANY (select s1 from t1));
select * from t1 where (s1 = ALL (select s1/s1 from t1)); select * from t1 where (s1 = ALL (select s1/s1 from t1));
select * from t1 where NOT(s1 = ALL (select s1/s1 from t1)); select * from t1 where NOT(s1 = ALL (select s1/s1 from t1));
drop table t1; drop table t1;
#
# Bug #16255: Subquery in where
#
CREATE TABLE t1 (a INT, b INT, PRIMARY KEY (a,b));
INSERT INTO t1 VALUES(26, 1), (48, 2);
SELECT * FROM t1 r WHERE (r.a,r.b) IN (SELECT a,MAX(b) FROM t1 GROUP BY a);
SELECT * FROM t1 r WHERE (r.a,r.b) IN (SELECT a + 0,MAX(b) FROM t1 GROUP BY a);
DROP TABLE t1;
# End of 4.1 tests # End of 4.1 tests

10
sql/item_subselect.cc
View File

@@ -976,18 +976,18 @@ Item_in_subselect::row_value_transformer(JOIN *join)
DBUG_RETURN(RES_ERROR); DBUG_RETURN(RES_ERROR);
Item *item_eq= Item *item_eq=
new Item_func_eq(new new Item_func_eq(new
Item_direct_ref((*optimizer->get_cache())-> Item_ref((*optimizer->get_cache())->
addr(i), addr(i),
(char *)"<no matter>", (char *)"<no matter>",
(char *)in_left_expr_name), (char *)in_left_expr_name),
new new
Item_direct_ref(select_lex->ref_pointer_array + i, Item_ref(select_lex->ref_pointer_array + i,
(char *)"<no matter>", (char *)"<no matter>",
(char *)"<list ref>") (char *)"<list ref>")
); );
Item *item_isnull= Item *item_isnull=
new Item_func_isnull(new new Item_func_isnull(new
Item_direct_ref( select_lex-> Item_ref( select_lex->
ref_pointer_array+i, ref_pointer_array+i,
(char *)"<no matter>", (char *)"<no matter>",
(char *)"<list ref>") (char *)"<list ref>")
@@ -1000,7 +1000,7 @@ Item_in_subselect::row_value_transformer(JOIN *join)
new new
Item_is_not_null_test(this, Item_is_not_null_test(this,
new new
Item_direct_ref(select_lex-> Item_ref(select_lex->
ref_pointer_array + i, ref_pointer_array + i,
(char *)"<no matter>", (char *)"<no matter>",
(char *)"<list ref>") (char *)"<list ref>")
@@ -1057,7 +1057,7 @@ Item_in_subselect::row_value_transformer(JOIN *join)
new new
Item_is_not_null_test(this, Item_is_not_null_test(this,
new new
Item_direct_ref(select_lex-> Item_ref(select_lex->
ref_pointer_array + i, ref_pointer_array + i,
(char *)"<no matter>", (char *)"<no matter>",
(char *)"<list ref>") (char *)"<list ref>")