查询数据库表重复数据

##----查询表中的重复数据
SELECT
    *
FROM
    business_sms_config tableB
WHERE
    tableB.id NOT IN (
        -- 剔除唯一数据剩下的就是重复数据
        SELECT
            min(tableA.id) -- 遇到重复数据,取ID小的那条,得到唯一属性数据,和Max相反
        FROM
            `business_sms_config` tableA
        WHERE
            tableB.phone_no = tableA.phone_no
        AND tableB.business_function_id = tableA.business_function_id
        AND tableB.partner_id = tableA.partner_id
    )

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转载自blog.csdn.net/qq_33144861/article/details/78772124