--- Al-Faisal El-Dajani <[EMAIL PROTECTED]>
wrote:

> I was extremely
> surprised to see the first
> query (join) was actually FASTER than my second
> query (nested). The only
> thing i managed to conclude was that MySQL doesn't
> support indices in inner
> statements (not sure, if you have a better
> explanation, please do share).

mysql doesn't optimize subqueries, or as is it says in
the docs "The optimizer is more mature for joins than
for subqueries"
http://dev.mysql.com/doc/refman/5.0/en/subquery-restrictions.html

- Aram




       
____________________________________________________________________________________
Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for 
today's economy) at Yahoo! Games.
http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow  

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups 
"Jolug" group.
 To post to this group, send email to [email protected]
 To unsubscribe from this group, send email to [EMAIL PROTECTED]
 For more options, visit this group at 
http://groups.google.com/group/Jolug?hl=en-GB
-~----------~----~----~----~------~----~------~--~---

رد على