你若决定灿烂，倒影也会美得让人惊叹。早安！幸运从来不是偶然，你所做的每件事，都会有惊喜等待着你。早安。
Oracle 数据库中查询重复数据：
select * from employee group by emp_name having count (*)>1;
Oracle 查询可以删除的重复数据
select t1.* from employee t1 where (t1.emp_name) in (SELECT t2.emp_name from employee t2 group by emp_name having count (*)>1) and t1.emp_id not in (select min(t3.emp_id) from employee t3 group by emp_name having count (*)>1);
Oracle 删除重复数据
delete from employee t1 where (t1.emp_name) in (SELECT t2.emp_name from employee t2 group by emp_name having count (*)>1) and t1.emp_id not in (select min(t3.emp_id) from employee t3 group by emp_name having count (*)>1);
本文Oracle删除重复的数据，Oracle数据去重复到此结束。如果说青春也有缺点，那就是它消失得太快。小编再次感谢大家对我们的支持！