数据库 fr 表 ruzhibiao 字段身份证号。在提交条件中设置如下语句。 select * from ruzhibiao where '身份证号' in (select '身份证号' from ruzhibiao group by '身份证号' having COUNT(*)<=1) 但是在提交的时候仍然可以成功。请问是语句错了么? |
最佳回答 |
||||
0
|
|
|||
0
|
|
|||
0
|
|
|||
0
|
|
|||
0
|
|
|||
0
|
|