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 operation '='

SELECT COUNT(*) as num from keywords WHERE campaignId='12' AND LCASE(keyword)='hello again 昔 ã‹ã‚‰ ã‚ã‚‹ å ´æ‰€'



Solusi : 

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.

http://stackoverflow.com/questions/1008287/illegal-mix-of-collations-mysql-error

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