Re: INSERT & UPDATE

On Fri, Apr 19, 2002 at 01:44:55PM -0500, Hillensbeck, Preston wrote:
> I am trying to UPDATE a column after an INSERT, and getting a NULL result,
> let me show you some code... This is from a PHP page by the way
>
> $sql="BEGIN WORK; INSERT INTO checking (check_date, check_amount,
> check_number, check_payee, check_trans_type) VALUES ('$check_date',
> '$check_amount', '$check_number', '$check_payee', '$check_trans_type');
> UPDATE checking SET check_post_balance = (check_pre_balance -
> $check_amount::money); COMMIT WORK;";
>
> After the INSERT, I am trying to update the check_post_balance column to
> check_pre_balance MINUS what the check_amount was. I have tried many
> variations on this and all I get are NULL results. Can anyone see what in
> the heck I am doing wrong? :) Thanks in advance!

I imagine the you get NULL out because check_pre_balance is also NULL?

--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> Canada, Mexico, and Australia form the Axis of Nations That
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