如何关联两个表
djk是学员表。想查询身份证有重复,显示出名字来select * from djk a ,(select sfzhm,count(sfzhm) as sj from djk group by sfzhm order by sj having sj>1) b where a.sfzhm=b.sfzhm
提示语法错误,请帮看下什么问题
2019-03-26 11:17
2019-03-27 09:19
2019-03-27 10:45
[此贴子已经被作者于2019-3-27 11:08编辑过]
2019-03-27 11:06
2019-03-28 09:08