mysql 表关联查询报错 ERROR 1267 (HY000)
解决翻案:http://stackoverflow.com/questions/1008287/illegal-mix-of-collations-mysql-error
即:
SET collation_connection = 'utf8_general_ci';
ALTER DATABASE db CHARACTER SET utf8 COLLATE utf8_general_ci;
ALTER TABLE table CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;
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