Mysql Error 1270 Illegal Mix Of Collations

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Mysql Illegal Mix Of Collations For Operation '='

Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, illegal mix of collations (utf8_general_ci coercible) and (latin1_swedish_ci implicit) just like you, helping each other. Join them; it only takes a minute: Sign up Troubleshooting “Illegal mix of collations” error in mysql up vote 102 down vote favorite 39 Am getting the below error when trying

Illegal Mix Of Collations For Operation 'like'

to do a select through a stored procedure in MySQL. Illegal mix of collations (latin1_general_cs,IMPLICIT) and (latin1_general_ci,IMPLICIT) for operation '=' Any idea on what might be going wrong here? The collation of the table is latin1_general_ci and that of the column in the where clause is latin1_general_cs. mysql collation share|improve this question edited Aug 4 '14 at 19:07 user212218 asked Jun 12 '10 at 16:23 user355562 7033914 add a comment| 10 Answers 10 active mysql illegal mix of collations for operation 'concat' oldest votes up vote 100 down vote This is generally caused by comparing two strings of incompatible collation or by attempting to select data of different collation into a combined column. The clause COLLATE allows you to specify the collation used in the query. For example, the following WHERE clause will always give the error you posted: WHERE 'A' COLLATE latin1_general_ci = 'A' COLLATE latin1_general_cs Your solution is to specify a shared collation for the two columns within the query. Here is an example uses of the COLLATE clause: SELECT * FROM table ORDER BY key COLLATE latin1_general_ci; Another option is to use the BINARY operator: BINARY str is shorthand for CAST(str AS BINARY). Your solution might look something like this: SELECT * FROM table WHERE BINARY a = BINARY b; Or, SELECT * FROM table ORDER BY BINARY a; share|improve this answer edited Jul 26 '14 at 22:54 answered Jun 12 '10 at 17:17 defines 6,20522240 2 Thanks. Actually it seems to be behaving pretty weird in my case. When I run the query as it is, via the query browser, it fetches me the results. But using a stored procedure throws up an error. –user355562 Jun 13 '10 at 6:21 4 Binary seemed to be the best solution for me. It might be the best for

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Mysql Error 1267 Illegal Mix Of Collations

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Collation 'utf8_general_ci' Is Not Valid For Character Set 'latin1'

Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask mysql cast collation 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 http://stackoverflow.com/questions/3029321/troubleshooting-illegal-mix-of-collations-error-in-mysql MySQL Illegal 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 http://stackoverflow.com/questions/12247120/mysql-illegal-mix-of-collations default under the 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

Locations Support Mobile Menu Contact Us SEARCH Search form Search this site SolutionsBusiness Intelligence Data Management IT Infrastructure About UsCulture Careers Locations Partners People ResourcesViz Gallery Case Studies Events BlogData IT https://www.interworks.com/blog/bbausili/2010/01/11/mysql-fixing-illegal-mix-collation News Culture Series MySQL - Fixing an Illegal mix of Collation By Ben Bausili 1.11.10 Dev Mixing Collations While creating an ETL process for a Client, I ran into the following https://www.sitepoint.com/community/t/illegal-mix-of-collations-for-operation-concat/26323 MySQL error: "Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (latin1_general_ci,IMPLICIT) for operation '='"A quick google search resulted a lot of bug reports on the MySQL website, but not any concrete instructions illegal mix on how to identify and fix the problem.  Obviously some tables in my query had different collations, but looking at table properties didn't result in any useful information.  This is because individual columns can have different collations in MySQL. The Fix In order to pinpoint the problem column(s) and table(s) run the following query (replacing the appropriate collation for your error): illegal mix of SELECT table_schema, table_name, column_name, character_set_name, collation_nameFROM information_schema.columnsWHERE collation_name = 'latin1_general_ci'ORDER BY table_schema, table_name,ordinal_position; You can change the individual collations on each column, but I prefer tackling it on a per table basis (since I had multiple tables to change): ALTER TABLE tbl_name CONVERT TO CHARACTER SET latin1 COLLATE 'latin1_swedish_ci'; More from the Author Ben Bausili Principal Consultant Facebook Twitter Google+ LinkedIn Tableau Driver's Ed: Extracts Posted 05.31.16 Tableau Driver's Ed: Data Sources Posted 05.19.16 View the discussion thread. Featured Events Nov 01 InnoTech Oklahoma view Nov 17 TechJunction Tulsa view Nov 07 Tableau Conference 2016 view Follow InterWorks Facebook Twitter Google+ LinkedIn Instagram Stay Connected Business IntelligenceVisualization Adoption Architecture Deployment Data ManagementData Integration Database Administration Custom Development IT InfrastructureFull-Spectrum Services Networking Transformation Continuity SolutionsBusiness Intelligence Data Management IT Infrastructure About UsCulture Careers Locations Partners People ResourcesViz Gallery Case Studies Events BlogData IT News Culture Series Support Contact Locations Privacy Policy Terms & Conditions Working with Third-Parties Cookies English Languages English English (UK) Deutsch Français Nederlands × Subscribe to our newsletter * indicates required Email Address * First Name * Last Name

'.', '/' ), ' ', '11:22') AS `DateHourEUR` FROM myTable; If try this query I have error, why?thank you. [Err] 1270 - Illegal mix of collations (utf8_general_ci,COERCIBLE), (utf8_general_ci,COERCIBLE), (latin1_swedish_ci,IMPLICIT) for operation 'concat' SELECT CONCAT(REPLACE ( DATE_FORMAT( myDate, GET_FORMAT(DATE, 'EUR') ), '.', '/' ), ' ', myHour) AS `DateHourEUR` FROM myTable; r937 2013-01-29 10:54:21 UTC #2 do a SHOW CREATE TABLE, please cms9651 2013-01-29 10:58:57 UTC #3 r937 said: do a SHOW CREATE TABLE, please thank you. DROP TABLE IF EXISTS `myTable`; CREATE TABLE `myTable` ( `myDate` date DEFAULT NULL, `myHour` varchar(255) DEFAULT NULL, `ID` int(10) NOT NULL AUTO_INCREMENT, PRIMARY KEY (`ID`), ) ENGINE=InnoDB AUTO_INCREMENT=16384 DEFAULT CHARSET=latin1; r937 2013-01-29 20:59:36 UTC #4 you make things too hard for yourself SELECT CONCAT(DATE_FORMAT(myDate,'%d/%m/%Y') ,' ', myHour) AS DateHourEUR FROM myTable; rcashell 2013-01-29 22:31:21 UTC #5 To respond to the issue you are having this is down to you connecting with UTF8 as the connection characterset. It is then attempting to CONCAT UTF8 strings with latin1. Either convert the UTF8 to latin1 or vice versa. For example: SELECT CONCAT(REPLACE ( DATE_FORMAT( myDate, GET_FORMAT(DATE, 'EUR') ), '.', '/' ), ' ', myHour COLLATE utf8_general_ci) AS DateHourEURFROM myTable; r937 2013-01-29 23:13:18 UTC #6 rcashell said: Either convert the UTF8 to latin1 or vice versa. ... i'd be interested in hearing how my solution worked out (above) it's also interesting that there are no text columns in the given table, so the latin1 is unnecessary the fact that the "myTime" column is VARCHAR(255), but holds values like '11:22', is yet another WTF rcashell 2013-01-29 23:39:10 UTC #7 The table is created with the default charset latin1. r937 2013-01-29 23:45:03 UTC #8 rcashell said: The table is created with the default charset latin1. i can see that the question is why cms9651 2013-01-30 08:04:27 UTC #9 r937 said: you make things too hard for yourself
SELECT CONCAT(DATE_FORMAT(myDate,'%d/%m/%Y')
,' ', myHour) AS DateHourEUR
FROM myTable;
thank you, this version working. > SELECT CONCAT(REPLACE ( DATE_FORMAT( myDate, GET_FORMAT(DATE, 'EUR') ), '.', '/' ), ' ', myHour COLLATE utf8_general_ci) AS `DateHourEUR` FROM myTable; With this version I have error:[Err] 1253 - COLLATION 'utf8_general_ci'