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Re: [mv] Which is less expensive computationally?
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> From: Chris Rapier <rapier@psc.edu>
>
> ****** message to minivend-users from Chris Rapier <rapier@psc.edu>
> ******
>
> I have a flag set in a database so new customers can get a discount.
> After they have made their firt order I need to set this to zero.
>
> Which would be less expensive;
> Doing a lookup in the database, then an if, and then setting it to zero
> if it is not already zero?
>
> -or-
>
> Automatically setting it to zero regardless of its previous value?
>
> I've a feeling its less taxing to just set it to zero each time unless
> database writes are a lot more intensive than both a read and a
> conditional.
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