MYSQL #1093 - You can't specify target table 'dealer_admin' for update in FROM clause

目前在写程序时，在处理MYSQL时遇到一个问题，问题如下

  
    

   
     update
   
      dealer_admin 
   
     set
   
      is_super_admin
   
     =
   
     1
   
      
   
     where
   
      id 
   
     in
   
      (
   
     select
   
      id 
   
     from
   
      dealer_admin 
   
     group
   
      
   
     by
   
      dealer_id );
  
    

此时会报：#1093 - You can't specify target table 'dealer_admin' for update in FROM clause

在网上找了一个暂时可以解决的方法

  
    

   
     create
   
      
   
     temporary
   
      
   
     table
   
      tmp (id 
   
     int
   
     );

   
     insert
   
      
   
     into
   
      tmp (id) 
   
     select
   
      id 
   
     from
   
      dealer_admin 
   
     group
   
      
   
     by
   
      dealer_id;

   
     update
   
      dealer_admin 
   
     set
   
      is_super_admin
   
     =
   
     1
   
      
   
     where
   
      id 
   
     in
   
      (
   
     select
   
      id 
   
     from
   
      tmp);