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Fix for BUG#16211: Stored function return type for strings is ignored.

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Fix for BUG#16676: Database CHARSET not used for stored procedures

The problem in BUG#16211 is that CHARSET-clause of the return type for
stored functions is just ignored.

The problem in BUG#16676 is that if character set is not explicitly
specified for sp-variable, the server character set is used instead
of the database one.

The fix has two parts:

  - always store CHARSET-clause of the return type along with the
    type definition in mysql.proc.returns column. "Always" means that
    CHARSET-clause is appended even if it has not been explicitly
    specified in CREATE FUNCTION statement (this affects BUG#16211 only).

    Storing CHARSET-clause if it is not specified is essential to avoid
    changing character set if the database character set is altered in
    the future.

    NOTE: this change is not backward compatible with the previous releases.

  - use database default character set if CHARSET-clause is not explicitly
    specified (this affects both BUG#16211 and BUG#16676).

    NOTE: this also breaks backward compatibility.
This commit is contained in:
anozdrin/alik@booka.
2006-07-27 17:57:43 +04:00
parent 7b34bbc43c
commit b7f403b546
11 changed files with 472 additions and 69 deletions
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2
mysql-test/r/mysqldump.result
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@@ -2248,7 +2248,7 @@ RETURN a+b */;;
/*!50003 SET SESSION SQL_MODE=@OLD_SQL_MODE*/;;
/*!50003 DROP FUNCTION IF EXISTS `bug9056_func2` */;;
/*!50003 SET SESSION SQL_MODE=""*/;;
/*!50003 CREATE*/ /*!50020 DEFINER=`root`@`localhost`*/ /*!50003 FUNCTION `bug9056_func2`(f1 char binary) RETURNS char(1)
/*!50003 CREATE*/ /*!50020 DEFINER=`root`@`localhost`*/ /*!50003 FUNCTION `bug9056_func2`(f1 char binary) RETURNS char(1) CHARSET latin1
begin
set f1= concat( 'hello', f1 );
return f1;