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  • 将mysql中一行中的几个字段 转换成一列并从其他数据库中查对应的邮件信息

    --将项目中的总监,经理,等的邮箱合并为一行
    SELECT GROUP_CONCAT(t.USER_EMAIL SEPARATOR ' ') mail_address   FROM portal.t_acl_userinfo AS t  WHERE t.username IN
    (SELECT DISTINCT a FROM (
    SELECT * FROM (
    SELECT XM_MANAGER a FROM xm_main WHERE xm_code='p20190132') A
    UNION ALL
    SELECT * FROM (
    SELECT XM_CONTACT a FROM xm_main WHERE xm_code='p20190132') B
    UNION ALL
    SELECT * FROM (
    SELECT XM_GENERAL a FROM xm_main WHERE xm_code='p20190132') C
    ) s)AND t.user_email IS NOT NULL

    mysql

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  • 原文地址:https://www.cnblogs.com/smile502/p/11805606.html
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