this is incompatible with sql_mode=only_full_group_bymysql

这个错误是因为在MySQL数据库中，开启了sql_mode=only_full_group_by的设置时，如果select的字段不在group by中，并且没有使用聚合函数（如SUM、AVG、MAX、MIN等），那么该查询就被认为是非法的，会报出这个错误。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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