Mysql Error Illegal Mix Of Collations
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6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Illegal mix of collations MySQL Error up vote 42 down vote favorite 21 I'm getting this strange error while processing a large number of data... Error Number: 1267 Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for mysql illegal mix of collations for operation 'concat' operation '=' SELECT COUNT(*) as num from keywords WHERE campaignId='12' AND LCASE(keyword)='hello again 昔 ã‹ã‚‰ ã‚ã‚‹ å ´æ‰€' What can I do to resolve this? Can I escape the string somehow so this error wouldn't occur, or do I need to change my table encoding somehow, and if so, what should I change it to? mysql sql mysql-error-1267 share|improve this question edited Feb 27 '12 at 4:20 OMG Ponies 199k37360417 asked Jun 17 '09 at 16:49 Click Upvote 66.8k176451621 add a comment| 3 Answers 3 active oldest votes up vote 119 down vote accepted SET collation_connection = 'utf8_general_ci' then for your databases ALTER DATABASE db CHARACTER SET utf8 COLLATE utf8_general_ci ALTER TABLE table CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci MySQL sneaks swedish in there sometimes for no sensible reason. share|improve this answer answered Jun 17 '09 at 16:59 Ben Hughes 10.1k13032 2 works like a charm :) –Shiv Deepak Nov 28 '12 at 19:25 1 Fantastic friend.
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us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just http://stackoverflow.com/questions/1008287/illegal-mix-of-collations-mysql-error like you, helping each other. Join them; it only takes a minute: Sign up Illegal mix of collations error in MySql up vote 25 down vote favorite 10 Just got this answer from a previous question and it works a treat! SELECT username, (SUM(rating)/COUNT(*)) as TheAverage, Count(*) as TheCount FROM ratings WHERE month='Aug' GROUP BY username http://stackoverflow.com/questions/1241856/illegal-mix-of-collations-error-in-mysql HAVING TheCount > 4 ORDER BY TheAverage DESC, TheCount DESC But when I stick this extra bit in it gives this error: Documentation #1267 - Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (latin1_general_ci,IMPLICIT) for operation '=' SELECT username, (SUM(rating)/COUNT(*)) as TheAverage, Count(*) as TheCount FROM ratings WHERE month='Aug' **AND username IN (SELECT username FROM users WHERE gender =1)** GROUP BY username HAVING TheCount > 4 ORDER BY TheAverage DESC, TheCount DESC The table is: id, username, rating, month mysql collation mysql-error-1267 share|improve this question edited Jun 27 '14 at 11:08 Rikesh 19k104266 asked Aug 6 '09 at 22:21 Oliver 2591718 add a comment| 15 Answers 15 active oldest votes up vote 7 down vote accepted Check the collation type of each table, and make sure that they have the same collation. After that check also the collation type of each table field that you have use in operation. I had encountered the same error, and that tricks works on me. share|improve this answer edited Jan 16
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this http://stackoverflow.com/questions/12247120/mysql-illegal-mix-of-collations site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up MySQL Illegal illegal mix mix of collations up vote 15 down vote favorite 7 After viewing my prod logs, I have some error mentionning : [2012-08-31 15:56:43] request.CRITICAL: Doctrine\DBAL\DBALException: An exception occurred while executing 'SELECT t0.username ....... FROM fos_user t0 WHERE t0.username = ?' with params {"1":"Nrv\u29e7Kasi"}: SQLSTATE[HY000]: General error: 1267 Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '=' Alghout i have UTF-8 default under the illegal mix of doctrine cfg : doctrine: dbal: charset: UTF8 It seems that all my MySQL Tables are in latin1_swedish_ci, so my question is : Can I manually change the collation to utf8_general_ci for all my tables without any complications/precautions ? mysql symfony2 collation symfony-2.1 fosuserbundle share|improve this question edited Oct 31 '12 at 11:02 Elnur Abdurrakhimov 34.6k5111110 asked Sep 3 '12 at 11:40 sf_tristanb 4,368114790 Relevant –ChocoDeveloper Sep 3 '12 at 21:18 add a comment| 3 Answers 3 active oldest votes up vote 49 down vote accepted It is helpful to understand the following definitions: A character encoding details how each symbol is represented in binary (and therefore stored in the computer). For example, the symbol é (U+00E9, latin small letter E with acute) is encoded as 0xc3a9 in UTF-8 (which MySQL calls utf8) and 0xe9 in Windows-1252 (which MySQL calls latin1). A character set is the alphabet of symbols that can be represented using a given character encoding. Confusingly, the term is also used to mean the same as character encoding. A collation is an ordering on a character set, so that strings can be compared. For example: MySQL's latin1_sw