[Err] 1093 - You can't specify target table 's' for update in FROM clause

[Err] 1093 - You can't specify target table 's' for update in FROM clause

 

 

      execute SQL

DELETE from  book WHERE id IN(
SELECT id FROM (

SELECT id,name FROM book WHERE name  IN(
SELECT  name FROM book  GROUP BY name HAVING count(name) > 1
)

) t WHERE id NOT IN (
SELECT  id FROM book  GROUP BY name HAVING count(name) > 1
 )

);

 

      An error occurred:

[Err] 1093 - You can't specify target table 's' for update in FROM clause

 

      I get this error when executing the SQL statement. The reason is that when the table and data are updated, it is queried again, and the queried data has been updated with conditions

 

      Solution: Query the data to be deleted as a third-party table, and then delete it.

DELETE book from book ,
(
   SELECT id FROM (
		SELECT id FROM book WHERE name IN(SELECT  name FROM book  GROUP BY name HAVING count(name) > 1)
   ) t
   WHERE id NOT IN (SELECT  id FROM book  GROUP BY name HAVING count(name) > 1)
) as a
WHERE book.id = a.id;