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Merge pilot.blaudden:/home/msvensson/mysql/bug25197/my50-bug25197

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into  pilot.blaudden:/home/msvensson/mysql/bug25197/my51-bug25197
This commit is contained in:
msvensson@pilot.blaudden 2007-03-28 09:33:16 +02:00
commit bed4cb75e4
3 changed files with 52 additions and 1 deletions
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23
mysql-test/r/func_str.result
View file

@ -2273,4 +2273,27 @@ abcxx
select lpad('abc', cast(5 as unsigned integer), 'x');
lpad('abc', cast(5 as unsigned integer), 'x')
xxabc
DROP TABLE IF EXISTS t1;
CREATE TABLE `t1` (
`id` varchar(20) NOT NULL,
`tire` tinyint(3) unsigned NOT NULL,
PRIMARY KEY (`id`)
);
INSERT INTO `t1` (`id`, `tire`) VALUES ('A', 0), ('B', 1),('C', 2);
SELECT REPEAT( '#', tire ) AS A,
REPEAT( '#', tire % 999 ) AS B, tire FROM `t1`;
A B tire
0
# # 1
## ## 2
SELECT REPEAT('0', CAST(0 AS UNSIGNED));
REPEAT('0', CAST(0 AS UNSIGNED))
SELECT REPEAT('0', -2);
REPEAT('0', -2)
SELECT REPEAT('0', 2);
REPEAT('0', 2)
00
DROP TABLE t1;
End of 5.0 tests

26
mysql-test/t/func_str.test
View file

@ -1115,4 +1115,30 @@ select repeat('a', cast(2 as unsigned int));
select rpad('abc', cast(5 as unsigned integer), 'x');
select lpad('abc', cast(5 as unsigned integer), 'x');
#
# Bug #25197 :repeat function returns null when using table field directly as count
#
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings
CREATE TABLE `t1` (
`id` varchar(20) NOT NULL,
`tire` tinyint(3) unsigned NOT NULL,
PRIMARY KEY (`id`)
);
INSERT INTO `t1` (`id`, `tire`) VALUES ('A', 0), ('B', 1),('C', 2);
SELECT REPEAT( '#', tire ) AS A,
REPEAT( '#', tire % 999 ) AS B, tire FROM `t1`;
SELECT REPEAT('0', CAST(0 AS UNSIGNED));
SELECT REPEAT('0', -2);
SELECT REPEAT('0', 2);
DROP TABLE t1;
--echo End of 5.0 tests

4
sql/item_strfunc.cc
View file

@ -2274,8 +2274,10 @@ String *Item_func_repeat::val_str(String *str)
if (args[0]->null_value || args[1]->null_value)
goto err; // string and/or delim are null
null_value= 0;
if ((count <= 0) && !args[1]->unsigned_flag) // For nicer SQL code
if (count <= 0 && (count == 0 || !args[1]->unsigned_flag))
return &my_empty_string;
/* Assumes that the maximum length of a String is < INT_MAX32. */
/* Bounds check on count: If this is triggered, we will error. */
if ((ulonglong) count > INT_MAX32)