In aggregated query without GROUP BY

1、问题：

查询语句：

select count(support) supportCount,count(collection) collectionCount, support,collection
from like_collect where articleId = 2;（注意：此处未使用group by语句声明非聚集函数列）

报错描述：In aggregated query without GROUP BY, expression #3 of SELECT list contains nonaggregated column 'pet.like_collect.support'; this is incompatible with sql_mode=only_full_group_by

2、分析报错原因：

mysql的sql_mode默认开启了only_full_group_by 模式

3、解决方法：

把SQL语句中非聚集函数列再group by后声明即可

select count(support) supportCount,count(collection) collectionCount, support,collection
from like_collect where articleId = 2 GROUP BY support,collection;

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