create table test(id int, name varchar);
insert into test values(1,'a'),(1,'a'),(2,'b');
- 查询
select * from test;
结果：
select ctid,* from test;
结果：
- 去除重复行
delete from test where ctid not in (select min(ctid) from test group by id);
- 验证
select ctid,* from test;