How do I update MySQL table, using subselect

Question

how can i write the query, to update the table videos , and set the value of field name to 'something' where the average is max(), or UPDATE the table, where average has the second value by size!!!

i think the query must look like this!!!

UPDATE videos 
   SET name = 'something' 
 WHERE average IN (SELECT `average`
                     FROM `videos`
                 ORDER BY `average` DESC
                    LIMIT 1)

but it doesn't work!!!

Answer 1

UPDATE videos 
   SET name = 'something' 
 WHERE videos.id IN (SELECT id
                     FROM `videos`
                 ORDER BY `average` DESC
                    LIMIT 1)

Answer 2

Two things here cause problems with my version of mysql (5.0.84) 1. Using limit not supported in subquery 2. Using table for update (videos) in subquery

I can't think of a good way to get around these problems. I'd suggest pulling the ids of hte rows you want to update out into your code and then executing the update in a second statement. If you are using pure sql and doing this by hand then you could always just select into a temp table and then update based on the ids that you insert there.