bk commit into 5.0 tree (msvensson:1.2408) BUG#25197

[msvensson]

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ChangeSet@stripped, 2007-03-28 09:32:49+02:00, msvensson@stripped +3 -0
  Bug#25197 repeat function returns null when using table field directly as count
   - Add extra test case from bug#27073
   - Change "if" to be optimized for count > 0

  mysql-test/r/func_str.result@stripped, 2007-03-28 09:32:47+02:00, msvensson@stripped
+9 -0
    Add test case from bug#27073

  mysql-test/t/func_str.test@stripped, 2007-03-28 09:32:47+02:00, msvensson@stripped +4
-0
    Add test case from bug#27073

  sql/item_strfunc.cc@stripped, 2007-03-28 09:32:47+02:00, msvensson@stripped +1 -1
    Change the if statemnet to be optimized for the normal case where count > 0

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	msvensson
# Host:	pilot.blaudden
# Root:	/home/msvensson/mysql/bug25197/my50-bug25197

--- 1.294/sql/item_strfunc.cc	2007-02-23 10:28:49 +01:00
+++ 1.295/sql/item_strfunc.cc	2007-03-28 09:32:47 +02:00
@@ -2252,7 +2252,7 @@ String *Item_func_repeat::val_str(String
     goto err;				// string and/or delim are null
   null_value= 0;
 
-  if (count == 0 || count < 0 && !args[1]->unsigned_flag)
+  if (count <= 0 && (count == 0 || !args[1]->unsigned_flag))
     return &my_empty_string;
 
   /* Assumes that the maximum length of a String is < INT_MAX32. */

--- 1.127/mysql-test/r/func_str.result	2007-02-23 10:28:49 +01:00
+++ 1.128/mysql-test/r/func_str.result	2007-03-28 09:32:47 +02:00
@@ -1953,5 +1953,14 @@ 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

--- 1.100/mysql-test/t/func_str.test	2007-02-23 10:28:49 +01:00
+++ 1.101/mysql-test/t/func_str.test	2007-03-28 09:32:47 +02:00
@@ -1028,6 +1028,10 @@ INSERT INTO `t1` (`id`, `tire`) VALUES (
 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