MySQL 5.7默認ONLY_FULL_GROUP_BY語義介紹以及故障解決

問題描述:Thinkphp程序由mysql5.6版本升級爲mysql5.7版本,出現FULL_GROUP_BY。php SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated co
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