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查询数据库某个字段重复出现的数据

查拉图斯特拉你和他 2022-03-15 阅读 105
select card_id,count(*) as count from mer_verify_card group by card_id having count>1;
SELECT
*
FROM
mer_verify_card
WHERE card_id IN
(SELECT
card_id
FROM
mer_verify_card
GROUP BY card_id
HAVING COUNT(1) > 1)
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