正文
删除重复记录的最新sql脚本
小程序:扫一扫查出行
【扫一扫了解最新限行尾号】
复制小程序
【扫一扫了解最新限行尾号】
复制小程序
delete from tb1 where id in(
select t2.minnum from(select MIN(t1.id) as minnum,t1.col1 as ars ,COUNT(1) as cx from tb1 t1 group by t1.col1
)t2)
select * from tb1 where id in(
select t2.minnum from
(select min(t.id) as minnum,t.col1,COUNT(1) cx from tb1 t group by t.col1 having COUNT(t.col1)>1) t2)
只查询有重复的部分
select * from tb1;
11 1
14 2
17 3
18 333
19 4