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Bug #30942: select str_to_date from derived table returns varying results

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The function str_to_date has a field to say whether it's invoked constant 
arguments. But this member was not initialized, causing the function to
think that it could use a cache of the format type when said cache was in 
fact not initialized.
Fixed by initializing the field to false.


mysql-test/r/type_date.result:
  Bug#30942: Test result
mysql-test/t/type_date.test:
  Bug#30942: Test case
sql/item_timefunc.h:
  Bug#30942: Initialized const_item to false
This commit is contained in:
unknown 2007-10-04 09:15:26 +02:00
commit f8f021fd6b
3 changed files with 24 additions and 1 deletions
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10
mysql-test/r/type_date.result
View file

@ -136,3 +136,13 @@ d dt ts
0000-00-00 0000-00-00 00:00:00 0000-00-00 00:00:00
2001-11-11 2001-11-11 00:00:00 2001-11-11 00:00:00
drop table t1;
CREATE TABLE t1 (
a INT
);
INSERT INTO t1 VALUES (1);
INSERT INTO t1 VALUES (NULL);
SELECT str_to_date( '', a ) FROM t1;
str_to_date( '', a )
0000-00-00 00:00:00
NULL
DROP TABLE t1;

13
mysql-test/t/type_date.test
View file

@ -136,3 +136,16 @@ insert into t1 values (9912101,9912101,9912101);
insert into t1 values (11111,11111,11111);
select * from t1;
drop table t1;
#
# Bug #30942: select str_to_date from derived table returns varying results
#
CREATE TABLE t1 (
a INT
);
INSERT INTO t1 VALUES (1);
INSERT INTO t1 VALUES (NULL);
SELECT str_to_date( '', a ) FROM t1;
DROP TABLE t1;