mysql 使用group by报错 sql_mode=only_full_group_by

mysql 开启only_full_group_by模式，该模式下使用mysql老版本的写法取group by分组数据会报错，报错如下： `Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column ‘wenming-bj-mtg.comments.organization_id’

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