MYSQL 临时表 #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);