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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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57
mysql-test/t/merge.test
View File

@@ -7,6 +7,8 @@ drop table if exists t1,t2,t3,t4,t5,t6;
drop database if exists mysqltest;
--enable_warnings
let $MYSQLD_DATADIR= `select @@datadir`;
create table t1 (a int not null primary key auto_increment, message char(20));
create table t2 (a int not null primary key auto_increment, message char(20));
INSERT INTO t1 (message) VALUES ("Testing"),("table"),("t1");
@@ -1633,4 +1635,59 @@ SHOW CREATE TRIGGER tr1;
DROP TRIGGER tr1;
DROP TABLE t1, t2, t3;
--echo #
--echo # BUG#48265 - MRG_MYISAM problem (works in 5.0.85, does't work in 5.1.40)
--echo #
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;
SHOW CREATE TABLE m1;
DROP TABLE m1;
CREATE TABLE `test/1`.m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
SELECT * FROM `test/1`.m1;
SHOW CREATE TABLE `test/1`.m1;
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;
SHOW CREATE TABLE m1;
DROP TABLE m1;
CREATE TEMPORARY TABLE `test/1`.m1(a INT) ENGINE=MERGE UNION=(`test/1`.`t/1`);
SELECT * FROM `test/1`.m1;
SHOW CREATE TABLE `test/1`.m1;
DROP TABLE `test/1`.m1;
DROP TABLE `test/1`.`t/1`;
DROP DATABASE `test/1`;
# Test compatibility. Use '@' instead of '/' (was not allowed in 5.0)
CREATE TABLE `t@1`(a INT);
copy_file std_data/bug48265.frm $MYSQLD_DATADIR/test/m1.frm;
write_file $MYSQLD_DATADIR/test/m1.MRG;
t@1
EOF
SELECT * FROM m1;
SHOW CREATE TABLE m1;
DROP TABLE `t@1`;
CREATE DATABASE `test@1`;
CREATE TABLE `test@1`.`t@1`(a INT);
FLUSH TABLE m1;
remove_file $MYSQLD_DATADIR/test/m1.MRG;
write_file $MYSQLD_DATADIR/test/m1.MRG;
./test@1/t@1
EOF
SELECT * FROM m1;
SHOW CREATE TABLE m1;
DROP TABLE m1;
DROP TABLE `test@1`.`t@1`;
DROP DATABASE `test@1`;
--echo End of 5.1 tests