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Bug#29898: Item_date_typecast::val_int doesn't reset the null_value flag.

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The Item_date_typecast::val_int function doesn't reset null_value flag.
This makes all values that follows the first null value to be treated as nulls
and led to a wrong result.

Now the Item_date_typecast::val_int function correctly sets the null_value flag
for both null and non-null values.


mysql-test/t/cast.test:
  Added a test case for the bug#29898:  Item_date_typecast::val_int doesn't reset
  the null_value flag.
mysql-test/r/cast.result:
  Added a test case for the bug#29898:  Item_date_typecast::val_int doesn't reset
  the null_value flag.
sql/item_timefunc.cc:
  Bug#29898: Item_date_typecast::val_int doesn't reset the null_value flag.
  Now the Item_date_typecast::val_int function correctly sets the null_value flag
  for both null and non-null values.
This commit is contained in:
unknown
2007-07-20 00:06:35 +04:00
parent d0020607b3
commit a131428f04
3 changed files with 21 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
mysql-test/r/cast.result
View File

@ -403,4 +403,15 @@ hex(cast('a' as binary(2)))
select hex(cast('a' as char(2) binary));
hex(cast('a' as char(2) binary))
61
CREATE TABLE t1 (d1 datetime);
INSERT INTO t1(d1) VALUES ('2007-07-19 08:30:00'), (NULL),
('2007-07-19 08:34:00'), (NULL), ('2007-07-19 08:36:00');
SELECT cast(date(d1) as signed) FROM t1;
cast(date(d1) as signed)
20070719
NULL
20070719
NULL
20070719
drop table t1;
End of 5.0 tests

9
mysql-test/t/cast.test
View File

@ -237,4 +237,13 @@ select hex(cast('a' as char(2) binary));
select hex(cast('a' as binary(2)));
select hex(cast('a' as char(2) binary));
#
# Bug#29898: Item_date_typecast::val_int doesn't reset the null_value flag.
#
CREATE TABLE t1 (d1 datetime);
INSERT INTO t1(d1) VALUES ('2007-07-19 08:30:00'), (NULL),
('2007-07-19 08:34:00'), (NULL), ('2007-07-19 08:36:00');
SELECT cast(date(d1) as signed) FROM t1;
drop table t1;
--echo End of 5.0 tests