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BUG#48265 - MRG_MYISAM problem (works in 5.0.85, does't

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work in 5.1.40)

MERGE engine fails to open child table from a different
database if child table/database name contains characters
that are subject for table name to filename encoding
(WL1324).

Another problem is that MERGE engine didn't properly open
child table from the same database if child table name
contains characters like '/', '#'.

The problem was that table name to file name encoding was
applied inconsistently:
* On CREATE: encode table name + database name if child
  table is in different database; do not encode table
  name if child table is in the same database;
* No decoding on open.

With this fix child table/database names are always
encoded on CREATE and decoded on open. Compatibility
with older tables preserved.

Along with this patch comes fix for SHOW CREATE TABLE,
which used to show child table/database path instead
of child table/database names.
This commit is contained in:
Sergey Vojtovich
2010-03-03 14:49:03 +04:00
parent 29b7338736
commit 1a9c3717f1
5 changed files with 205 additions and 53 deletions
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67
mysql-test/r/merge.result
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@ -2219,4 +2219,71 @@ Trigger sql_mode SQL Original Statement character_set_client collation_connectio
tr1 CREATE DEFINER=`root`@`localhost` TRIGGER tr1 AFTER INSERT ON t3 FOR EACH ROW CALL foo() latin1 latin1_swedish_ci latin1_swedish_ci
DROP TRIGGER tr1;
DROP TABLE t1, t2, t3;
#
# BUG#48265 - MRG_MYISAM problem (works in 5.0.85, does't work in 5.1.40)
#
CREATE DATABASE `test/1`;
CREATE TABLE `test/1`.`t/1`(a INT);
CREATE TABLE m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
SELECT * FROM m1;
a
SHOW CREATE TABLE m1;
Table Create Table
m1 CREATE TABLE `m1` (
`a` int(11) DEFAULT NULL
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 UNION=(`test/1`.`t/1`)
DROP TABLE m1;
CREATE TABLE `test/1`.m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
SELECT * FROM `test/1`.m1;
a
SHOW CREATE TABLE `test/1`.m1;
Table Create Table
m1 CREATE TABLE `m1` (
`a` int(11) DEFAULT NULL
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 UNION=(`t/1`)
DROP TABLE `test/1`.m1;
DROP TABLE `test/1`.`t/1`;
CREATE TEMPORARY TABLE `test/1`.`t/1`(a INT);
CREATE TEMPORARY TABLE m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
SELECT * FROM m1;
a
SHOW CREATE TABLE m1;
Table Create Table
m1 CREATE TEMPORARY TABLE `m1` (
`a` int(11) DEFAULT NULL
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 UNION=(`test/1`.`t/1`)
DROP TABLE m1;
CREATE TEMPORARY TABLE `test/1`.m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
SELECT * FROM `test/1`.m1;
a
SHOW CREATE TABLE `test/1`.m1;
Table Create Table
m1 CREATE TEMPORARY TABLE `m1` (
`a` int(11) DEFAULT NULL
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 UNION=(`t/1`)
DROP TABLE `test/1`.m1;
DROP TABLE `test/1`.`t/1`;
DROP DATABASE `test/1`;
CREATE TABLE `t@1`(a INT);
SELECT * FROM m1;
a
SHOW CREATE TABLE m1;
Table Create Table
m1 CREATE TABLE `m1` (
`a` int(11) DEFAULT NULL
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 UNION=(`t@1`)
DROP TABLE `t@1`;
CREATE DATABASE `test@1`;
CREATE TABLE `test@1`.`t@1`(a INT);
FLUSH TABLE m1;
SELECT * FROM m1;
a
SHOW CREATE TABLE m1;
Table Create Table
m1 CREATE TABLE `m1` (
`a` int(11) DEFAULT NULL
) ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 UNION=(`test@1`.`t@1`)
DROP TABLE m1;
DROP TABLE `test@1`.`t@1`;
DROP DATABASE `test@1`;
End of 5.1 tests