sql find duplicate 

SELECT GUID, COUNT(*) FROM xx GROUP BY GUID HAVING COUNT(*) > 1;

SELECT
    name, email, COUNT(*)
FROM
    users
GROUP BY
    name, email
HAVING 
    COUNT(*) > 1

posted @ 2018-11-27 17:47  kakaisgood  阅读(198)  评论(0)  编辑  收藏  举报