摘要: 需求描述: 要是用两表联合查询,并对查询的结果进行分组:sql如下: 这样的sql语句会报错结果如下: Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'a.id' wh 阅读全文
posted @ 2019-10-23 10:06 Java_lively 阅读(1521) 评论(0) 推荐(0) 编辑