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  • mysql 一个较特殊的问题:You can't specify target table for update in FROM clause

    mysql 一个较特殊的问题:You can't specify target table for update in FROM clause
    即:不能先select出同一表中的某些值,再update这个表(在同一语句中),解决方案:查询时为表定义一个别名在取值
    eg:
    UPDATE 
      `EDMGR_FORM_BASICINFO` 
    SET
      `EDMGR_FORM_BASICINFO`.`BELONG_DOMAIN` = '' 
    WHERE `EDMGR_FORM_BASICINFO`.`C_TYPE` = 'Question' 
      AND `EDMGR_FORM_BASICINFO`.`PARENT_UID` = '24101479651ef4aa0b3a198099491771' 
      AND `EDMGR_FORM_BASICINFO`.`USER_TYPE` = 'TEACHER' 
      AND `EDMGR_FORM_BASICINFO`.`BELONG_DOMAIN` = 
      (SELECT 
        basic.CHILD_UID 
      FROM
        (SELECT 
          `EDMGR_FORM_BASICINFO`.`CHILD_UID` 
        FROM
          `EDMGR_FORM_BASICINFO` 
        WHERE `EDMGR_FORM_BASICINFO`.`BASIC_UID` = '85043510851f0bccad6bd96005630220') basic)
     
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  • 原文地址:https://www.cnblogs.com/h07061108/p/mysql.html
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