sql删除重复数据

DELETE FROM city_info
WHERE 1=1
AND admin_id IN ( SELECT * from ( SELECT admin_id FROM city_info GROUP BY admin_id HAVING COUNT(admin_id)>1 ) as A)
AND id NOT IN ( SELECT * from ( SELECT MIN(id) FROM city_info GROUP BY admin_id HAVING COUNT(admin_id)>1 ) as B)

 

 

转载于:https://www.cnblogs.com/liuxinxin4288/p/11511097.html