Re: ? Sort by a summation of columns ?

From: Date: Sun, 26 Nov 2000 18:46:17 +0000
Subject: Re: ? Sort by a summation of columns ?
References: 1 2  Groups: php.db 
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Perfect! Thanks so much -- ----------------- The DevBoard - http://www.thedevboard.com ----------------- http://www.alladvantage.com/go.asp?refid=BIY971 - AllAdvantage "Bob Hall" <bobhall@clark.net> wrote in message news:v04220807b647029d3423@[168.143.31.92]... > >Great! But now it goes a little farther... > > > >i have it so my sql statement is: > > > >"SELECT (1*v1+2*v2+3*v3+4*v4+5*v5)/(v1+v2+v3+v4+v5) as sumofv FROM posts > >ORDER BY sumofv DESC"; > > > >what this does is if they voted a 1, it gives them one point for each vote, > >if they voted a 2 its 2 points for each so the votes are weighted. > > > >the problem is, if no one has voted, it tries to divide by zero. however, > >sql doesnt give an error, instead it puts these rows ahead of the ones > >without votes. so if i was sorting by rating it would look like this: > > > >N/A > >N/A > >4.0 > >3.0 > >2.5 > >1.0 > > > >however i want the N/A's to be at the bottom. got any ideas for that? > > Sir, try > SELECT (1*v1+2*v2+3*v3+4*v4+5*v5)/If((v1+v2+v3+v4+v5), (v1+v2+v3+v4+v5), 1) > > Bob Hall > > Know thyself? Absurd direction! > Bubbles bear no introspection. -Khushhal Khan Khatak > > -- > PHP Database Mailing List (http://www.php.net/) > To unsubscribe, e-mail: php-db-unsubscribe@lists.php.net > For additional commands, e-mail: php-db-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net >

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