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  • mycat 1.6.6.1 distinct报错问题

    以前在mysql5.7上执行如下sql语句没有问题

    SELECT DISTINCT u.*,c.content userCategory FROM m_user u LEFT JOIN m_category c ON u.user_category=c.category_id LEFT JOIN m_user_role mr ON u.user_id=mr.user_id WHERE 1=1 AND u.user_status=0 ORDER BY u.createtime DESC LIMIT 10 

    使用mycat 1.6.6.1后执行上面的sql语句报错如下:

    1 queries executed, 0 success, 1 errors, 0 warnings

    查询:SELECT DISTINCT u.*,c.content userCategory FROM m_user u LEFT JOIN m_category c ON u.user_category=c.category_id LEFT JOIN m_use...

    错误代码: 1064
    You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '*, c.content
    ORDER BY u.createtime DESC
    LIMIT 10' at line 5

    执行耗时 : 0 sec
    传送时间 : 0 sec
    总耗时 : 0.008 sec

    后来把mycat上执行的语句改为如下语句(把 distinct后的 * 号改为u表的每个字段)执行成功:

    SELECT DISTINCT u.user_id,u.user_name,u.user_pwd,u.user_realname,u.user_email,u.mobile_phone,u.office_phone,u.user_category,u.user_subcategory,u.user_status,u.createtime,u.updatetime,u.createuser,u.user_ip,u.user_odm_id,c.content userCategory  FROM m_user u LEFT JOIN m_category c ON u.user_category=c.category_id LEFT JOIN m_user_role mr ON u.user_id=mr.user_id WHERE 1=1 AND u.user_status=0 ORDER BY u.createtime DESC LIMIT 10

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  • 原文地址:https://www.cnblogs.com/xiaohanlin/p/10334894.html
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