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Fix for

Browse Source 
bug#33094: Error in upgrading from 5.0 to 5.1 when table contains
triggers
and
#41385: Crash when attempting to repair a #mysql50# upgraded table
with triggers.

Problem:
1. trigger code didn't assume a table name may have
a "#mysql50#" prefix, that may lead to a failing ASSERT().
2. "ALTER DATABASE ... UPGRADE DATA DIRECTORY NAME" failed
for databases with "#mysql50#" prefix if any trigger.
3. mysqlcheck --fix-table-name didn't use UTF8 as a default
character set that resulted in (parsing) errors for tables with
non-latin symbols in their names and definitions of triggers.

Fix:
1. properly handle table/database names with "#mysql50#" prefix.
2. handle --default-character-set mysqlcheck option;
if mysqlcheck is launched with --fix-table-name or --fix-db-name
set default character set to UTF8 if no --default-character-set
option given.

Note: if given --fix-table-name or --fix-db-name option,
without --default-character-set mysqlcheck option
default character set is UTF8.


client/mysqlcheck.c:
  Fix for
  bug#33094: Error in upgrading from 5.0 to 5.1 when table contains
  triggers
  and
  #41385: Crash when attempting to repair a #mysql50# upgraded table
  with triggers.
    - check and set default charset if --default-character-set option
      given.
    - set default charset to "utf8" if there's
      --fix-table-name or --fix-db-name and no --default-character-set.
mysql-test/r/mysqlcheck.result:
  Fix for
  bug#33094: Error in upgrading from 5.0 to 5.1 when table contains
  triggers
  and
  #41385: Crash when attempting to repair a #mysql50# upgraded table
  with triggers.
    - test result.
mysql-test/t/mysqlcheck.test:
  Fix for
  bug#33094: Error in upgrading from 5.0 to 5.1 when table contains
  triggers
  and
  #41385: Crash when attempting to repair a #mysql50# upgraded table
  with triggers.
    - test case.
sql/mysql_priv.h:
  Fix for
  bug#33094: Error in upgrading from 5.0 to 5.1 when table contains
  triggers
  and
  #41385: Crash when attempting to repair a #mysql50# upgraded table
  with triggers.
    - check_n_cut_mysql50_prefix() introduced.
sql/sql_table.cc:
  Fix for
  bug#33094: Error in upgrading from 5.0 to 5.1 when table contains
  triggers
  and
  #41385: Crash when attempting to repair a #mysql50# upgraded table
  with triggers.
    - tablename_to_filename() code split into 2 parts
    - check_n_cut_mysql50_prefix() introduced to cut #mysql50# prefixes,
      used in the trigger code as well.
sql/sql_trigger.cc:
  Fix for
  bug#33094: Error in upgrading from 5.0 to 5.1 when table contains
  triggers
  and
  #41385: Crash when attempting to repair a #mysql50# upgraded table
  with triggers.
    - Table_triggers_list::check_n_load() - checking triggers assume
      a table/database name given may have "#mysql50#" prefix in some cases.
    - Table_triggers_list::change_table_name_in_triggers() -
      create .TRG file in new database directory and delete it in old one,
      as they may differ in case of
      "ALTER DATABASE ... UPGRADE DATA DIRECTORY NAME"
    - Table_triggers_list::change_table_name_in_trignames() - remove stale .TRN
      files in #mysql50#dbname directory in case of database upgrade
    - Table_triggers_list::change_table_name() - allow changing trigger's
      database in case of its upgrading
sql/sql_trigger.h:
  Fix for
  bug#33094: Error in upgrading from 5.0 to 5.1 when table contains
  triggers
  and
  #41385: Crash when attempting to repair a #mysql50# upgraded table
  with triggers.
    - new old_db_name parameter added in
      Table_triggers_list::change_table_name_in_trignames() and
      Table_triggers_list::change_table_name_in_triggers()
This commit is contained in:
Ramil Kalimullin
2009-01-14 18:50:51 +04:00
parent 45140a8ea3
commit 53e42d9ee4
7 changed files with 241 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
mysql-test/r/mysqlcheck.result
View File

@ -130,3 +130,58 @@ v1
v-1
drop view v1, `v-1`;
drop table t1;
SET NAMES utf8;
CREATE TABLE `#mysql50#@` (a INT);
SHOW TABLES;
Tables_in_test
#mysql50#@
SET NAMES DEFAULT;
mysqlcheck --fix-table-names --databases test
SET NAMES utf8;
SHOW TABLES;
Tables_in_test
@
DROP TABLE `@`;
CREATE TABLE `я` (a INT);
SET NAMES DEFAULT;
mysqlcheck --default-character-set="latin1" --databases test
test.?
Error : Table 'test.?' doesn't exist
error : Corrupt
mysqlcheck --default-character-set="utf8" --databases test
test.я OK
SET NAMES utf8;
DROP TABLE `я`;
SET NAMES DEFAULT;
CREATE DATABASE `#mysql50#a@b`;
USE `#mysql50#a@b`;
CREATE TABLE `#mysql50#c@d` (a INT);
CREATE TABLE t1 (a INT);
SELECT * FROM INFORMATION_SCHEMA.TRIGGERS
WHERE TRIGGER_SCHEMA="#mysql50#a@b" ORDER BY trigger_name;
TRIGGER_CATALOG TRIGGER_SCHEMA TRIGGER_NAME EVENT_MANIPULATION EVENT_OBJECT_CATALOG EVENT_OBJECT_SCHEMA EVENT_OBJECT_TABLE ACTION_ORDER ACTION_CONDITION ACTION_STATEMENT ACTION_ORIENTATION ACTION_TIMING ACTION_REFERENCE_OLD_TABLE ACTION_REFERENCE_NEW_TABLE ACTION_REFERENCE_OLD_ROW ACTION_REFERENCE_NEW_ROW CREATED SQL_MODE DEFINER CHARACTER_SET_CLIENT COLLATION_CONNECTION DATABASE_COLLATION
NULL #mysql50#a@b tr1 INSERT NULL #mysql50#a@b #mysql50#c@d 0 NULL SET NEW.a = 10 * NEW.a ROW BEFORE NULL NULL OLD NEW NULL root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
NULL #mysql50#a@b tr2 INSERT NULL #mysql50#a@b t1 0 NULL SET NEW.a = 100 * NEW.a ROW BEFORE NULL NULL OLD NEW NULL root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
Warnings:
Warning 1603 Triggers for table `#mysql50#a@b`.`#mysql50#c@d` have no creation context
Warning 1603 Triggers for table `#mysql50#a@b`.`t1` have no creation context
mysqlcheck --fix-db-names --fix-table-names --all-databases
USE `a@b`;
SELECT * FROM INFORMATION_SCHEMA.TRIGGERS
WHERE TRIGGER_SCHEMA="a@b" ORDER BY trigger_name;
TRIGGER_CATALOG TRIGGER_SCHEMA TRIGGER_NAME EVENT_MANIPULATION EVENT_OBJECT_CATALOG EVENT_OBJECT_SCHEMA EVENT_OBJECT_TABLE ACTION_ORDER ACTION_CONDITION ACTION_STATEMENT ACTION_ORIENTATION ACTION_TIMING ACTION_REFERENCE_OLD_TABLE ACTION_REFERENCE_NEW_TABLE ACTION_REFERENCE_OLD_ROW ACTION_REFERENCE_NEW_ROW CREATED SQL_MODE DEFINER CHARACTER_SET_CLIENT COLLATION_CONNECTION DATABASE_COLLATION
NULL a@b tr1 INSERT NULL a@b c@d 0 NULL SET NEW.a = 10 * NEW.a ROW BEFORE NULL NULL OLD NEW NULL root@localhost utf8 utf8_general_ci latin1_swedish_ci
NULL a@b tr2 INSERT NULL a@b t1 0 NULL SET NEW.a = 100 * NEW.a ROW BEFORE NULL NULL OLD NEW NULL root@localhost utf8 utf8_general_ci latin1_swedish_ci
INSERT INTO `c@d` VALUES (2), (1);
SELECT * FROM `c@d`;
a
20
10
INSERT INTO t1 VALUES (3), (5);
SELECT * FROM t1;
a
300
500
DROP DATABASE `a@b`;
USE test;
End of 5.1 tests