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Count() without GROUP BY


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#1 godfrank

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Posted 09 May 2006 - 12:26 AM

Helo folks!

How can I use count() without GROUP BY?


Thank you!

#2 .josh

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Posted 09 May 2006 - 03:26 AM

umm...that depends. for instance:

[!--coloro:blue--][span style=\"color:blue\"][!--/coloro--] select count(columnnamehere) as total from tablename[!--colorc--][/span][!--/colorc--]

returns

total
===
x

where x is the total returned from count()
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#3 fenway

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Posted 10 May 2006 - 03:38 PM

[!--quoteo(post=372461:date=May 8 2006, 07:26 PM:name=godfrank)--][div class=\'quotetop\']QUOTE(godfrank @ May 8 2006, 07:26 PM) View Post[/div][div class=\'quotemain\'][!--quotec--]
Helo folks!

How can I use count() without GROUP BY?
Thank you!
[/quote]
You're not supposed to be able to at all -- this is an aggregate function, and hence requires something aggregate to work on. MySQL just assumes that you implicitly mean the entire result set, but you shouldn't rely on this.
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