Question

I need to Select a column with name song_number where id = 2 and then update the second row from the selected rows with 7 for example

what i think that the query i need is something like this but i can’t get it work

UPDATE `song` SET `song_number`= 7 WHERE (SELECT `song_number` FROM `song` WHERE `id` = 2 LIMIT 1,1)

any help will be appreciated

edit: i think the problem is mainly in the database structure i made however i found a solution to what i need by making stored procedure http://dev.mysql.com/doc/refman/5.0/en/create-procedure.html
so that i can save the selected items in a procedure and then update it

Answer 1

You have to identify which row you want to update. Identification means using a UNIQUE key or the PRIMARY key of the table.

The limitation of MySQL on UPDATE can be lifted by moving the condition from the WHERE to a JOIN:

UPDATE 
      song AS s
  JOIN
      ( SELECT  PK                --- the Primary Key of the tba;e 
        FROM song 
        WHERE id = 2 
        ORDER BY ---whatever
        LIMIT 1 OFFSET 1
      ) AS u
    ON u.PK = s.PK
SET s.song_number= 7 

---

If the PRIMARY KEY is id, then the above is useless of course. You are doing something wrong.