在测试中，经常会对程序中某一功能进行反复的测试，进而导致数据表中产生了除主键以外的重复数据。我们如何找出这些重复的数据呢？其实可以用很简单SQL语句将其查询出来。如果想查询数据表中某一个字段重复（这里假设这个字段名是ID1），可以使用以下SQL语句。select Table1.* from Table1 right join (select ID1 From Table1 Group by ID1 having Count(ID1) > 1 ) T on Table1.id1 = T.id1如果想查询数据表某两个字段重复，则可以使用如下语句查询。select Table1.*from Table1 rig
select CC from TT group by CC having count(*)>1select CC,count(*) from TT group by CC having count(*)>1select CC,BB from TT group by CC,BB having count(*)>1
