Bug #60854 Restore DUMP: Illegal mix of collations for operation 'UNION'
Submitted: 13 Apr 2011 11:53 Modified: 14 Apr 2011 22:32
Reporter: Richard Teubel Email Updates:
Status: Duplicate Impact on me:
None 
Category:MySQL Server: Backup Severity:S2 (Serious)
Version:5.5.11, 5.1.51 OS:Linux
Assigned to: CPU Architecture:Any
Tags: dump, ERROR 1271, latin1_german2_ci, UNION, Views

[13 Apr 2011 11:53] Richard Teubel
Description:
Hello,

i have a restore problem in combination with UNION, VIEWS and latin1_german2_ci.

View v_A and v_B select from a Table that inludes a varchar field COLLATE latin1_german2_ci. View v_B select from v_A and v_B with UNION. It works fine for me.

I create a dump and should like to restore that. MySQL tell me: Illegal mix of collations for operation 'UNION'. If I change the COLLATE of the field to latin1_swedish_ci the restore works fine.

But in case of emergency it must work without trouble and any changes!

How to repeat:
mysqldump --disable-keys --triggers --routines -u root -p dumptest > dump.sql

-- MySQL dump 10.13  Distrib 5.5.11, for linux2.6 (x86_64)
--
-- Host: localhost    Database: dumptest
-- ------------------------------------------------------
-- Server version	5.5.11-log

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Table structure for table `myTable`
--

DROP TABLE IF EXISTS `myTable`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `myTable` (
  `ID` int(11) NOT NULL AUTO_INCREMENT,
  `myValue` varchar(20) COLLATE latin1_german2_ci DEFAULT NULL,
  PRIMARY KEY (`ID`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=latin1 COLLATE=latin1_german2_ci;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `myTable`
--

LOCK TABLES `myTable` WRITE;
/*!40000 ALTER TABLE `myTable` DISABLE KEYS */;
INSERT INTO `myTable` VALUES (1,'Value1'),(2,'Value2');
/*!40000 ALTER TABLE `myTable` ENABLE KEYS */;
UNLOCK TABLES;

--
-- Temporary table structure for view `v_A`
--

DROP TABLE IF EXISTS `v_A`;
/*!50001 DROP VIEW IF EXISTS `v_A`*/;
SET @saved_cs_client     = @@character_set_client;
SET character_set_client = utf8;
/*!50001 CREATE TABLE `v_A` (
  `ID` int(11),
  `myValue` varchar(20)
) ENGINE=MyISAM */;
SET character_set_client = @saved_cs_client;

--
-- Temporary table structure for view `v_B`
--

DROP TABLE IF EXISTS `v_B`;
/*!50001 DROP VIEW IF EXISTS `v_B`*/;
SET @saved_cs_client     = @@character_set_client;
SET character_set_client = utf8;
/*!50001 CREATE TABLE `v_B` (
  `ID` int(11),
  `myValue` varchar(20)
) ENGINE=MyISAM */;
SET character_set_client = @saved_cs_client;

--
-- Temporary table structure for view `v_Z`
--

DROP TABLE IF EXISTS `v_Z`;
/*!50001 DROP VIEW IF EXISTS `v_Z`*/;
SET @saved_cs_client     = @@character_set_client;
SET character_set_client = utf8;
/*!50001 CREATE TABLE `v_Z` (
  `ID` int(11),
  `myValue` varchar(20)
) ENGINE=MyISAM */;
SET character_set_client = @saved_cs_client;

--
-- Dumping routines for database 'dumptest'
--

--
-- Final view structure for view `v_A`
--

/*!50001 DROP TABLE IF EXISTS `v_A`*/;
/*!50001 DROP VIEW IF EXISTS `v_A`*/;
/*!50001 SET @saved_cs_client          = @@character_set_client */;
/*!50001 SET @saved_cs_results         = @@character_set_results */;
/*!50001 SET @saved_col_connection     = @@collation_connection */;
/*!50001 SET character_set_client      = latin1 */;
/*!50001 SET character_set_results     = latin1 */;
/*!50001 SET collation_connection      = latin1_swedish_ci */;
/*!50001 CREATE ALGORITHM=UNDEFINED */
/*!50013 DEFINER=`rteubel`@`%` SQL SECURITY DEFINER */
/*!50001 VIEW `v_A` AS select `myTable`.`ID` AS `ID`,`myTable`.`myValue` AS `myValue` from `myTable` where (`myTable`.`ID` = 1) */;
/*!50001 SET character_set_client      = @saved_cs_client */;
/*!50001 SET character_set_results     = @saved_cs_results */;
/*!50001 SET collation_connection      = @saved_col_connection */;

--
-- Final view structure for view `v_B`
--

/*!50001 DROP TABLE IF EXISTS `v_B`*/;
/*!50001 DROP VIEW IF EXISTS `v_B`*/;
/*!50001 SET @saved_cs_client          = @@character_set_client */;
/*!50001 SET @saved_cs_results         = @@character_set_results */;
/*!50001 SET @saved_col_connection     = @@collation_connection */;
/*!50001 SET character_set_client      = latin1 */;
/*!50001 SET character_set_results     = latin1 */;
/*!50001 SET collation_connection      = latin1_swedish_ci */;
/*!50001 CREATE ALGORITHM=UNDEFINED */
/*!50013 DEFINER=`root`@`%` SQL SECURITY DEFINER */
/*!50001 VIEW `v_B` AS select `v_A`.`ID` AS `ID`,`v_A`.`myValue` AS `myValue` from `v_A` union select `v_Z`.`ID` AS `ID`,`v_Z`.`myValue` AS `myValue` from `v_Z` */;
/*!50001 SET character_set_client      = @saved_cs_client */;
/*!50001 SET character_set_results     = @saved_cs_results */;
/*!50001 SET collation_connection      = @saved_col_connection */;

--
-- Final view structure for view `v_Z`
--

/*!50001 DROP TABLE IF EXISTS `v_Z`*/;
/*!50001 DROP VIEW IF EXISTS `v_Z`*/;
/*!50001 SET @saved_cs_client          = @@character_set_client */;
/*!50001 SET @saved_cs_results         = @@character_set_results */;
/*!50001 SET @saved_col_connection     = @@collation_connection */;
/*!50001 SET character_set_client      = latin1 */;
/*!50001 SET character_set_results     = latin1 */;
/*!50001 SET collation_connection      = latin1_swedish_ci */;
/*!50001 CREATE ALGORITHM=UNDEFINED */
/*!50013 DEFINER=`root`@`%` SQL SECURITY DEFINER */
/*!50001 VIEW `v_Z` AS select `myTable`.`ID` AS `ID`,`myTable`.`myValue` AS `myValue` from `myTable` where (`myTable`.`ID` = 2) */;
/*!50001 SET character_set_client      = @saved_cs_client */;
/*!50001 SET character_set_results     = @saved_cs_results */;
/*!50001 SET collation_connection      = @saved_col_connection */;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
[13 Apr 2011 12:20] MySQL Verification Team
Could you please check if related to http://bugs.mysql.com/bug.php?id=57926?. Thanks in advance.
[13 Apr 2011 14:51] Richard Teubel
Hi Miguel, it's the same problem and in this case I can use a workaround.

I located that the views frist created as table with the sort sequence of database. That is in my case latin1_swedish_ci. If I create the Database explicit with 
CREATE DATABASE dumptest CHARACTER SET latin1 COLLATE latin1_german2_ci
before restore then it works. 

best regards
Richard
[14 Apr 2011 22:32] MySQL Verification Team
Thank you for the feedback. 

Duplicate of http://bugs.mysql.com/bug.php?id=57926.