Re: need help to build a query

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On Monday 09 October 2006 16:50, John Wells wrote:
> Yes you are right, but I guess you can decide which is worse: sending
> extra data in one query or send extra queries.  I guess it depends on
> how many records we're talking about...

It will vary with your problem, but in general, fewer queries == A Good Thing.  
If you can do with a join or subselect what would take n queries otherwise, 
do so.  

Also, JOIN is faster than sub-queries.  Be aware, though, that MySQL doesn't 
support sub-queries until version 4.1.

-- 
Larry Garfield			AIM: LOLG42
larry@xxxxxxxxxxxxxxxx		ICQ: 6817012

"If nature has made any one thing less susceptible than all others of 
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which an individual may exclusively possess as long as he keeps it to 
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of every one, and the receiver cannot dispossess himself of it."  -- Thomas 
Jefferson

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