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Re: Subset Query Speed Help from .46 second to 7 minutes!
Posted by: Brian Pilati
Date: August 15, 2005 03:21PM

Brian Pilati wrote:
> > , IF( gl.credit > 0 , gl.credit , - gl.debit ) AS amount
> > , COALESCE(invoiced_transfers.debit, prepayments.debit) as payment

I have one last question. I need to find the balance which is the amount - payment.

Of course, in my select statement I can say:

IF( gl.credit > 0 , gl.credit , - gl.debit ) -
COALESCE(invoiced_transfers.debit, prepayments.debit) as balance

but why can't

, IF( gl.credit > 0 , gl.credit , - gl.debit ) AS amount
, COALESCE(invoiced_transfers.debit, prepayments.debit) as payment
, amount - payment

work as variable?

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