Thank you to all who responded. A left join was definately the answer.
Richard
Roger Karnouk wrote:
>
> Try this
>
> SELECT l.load_no l.date FROM loads l left join invoice i
> on (l.load_no = i.load_no)
> where i.load_no is null
> AND l.dlvr_date > 0;
>
> -----Original Message-----
> From: Richard Reina [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, May 30, 2001 12:42 PM
> To: [EMAIL PROTECTED]
> Subject: SELECT question.
>
> I am stuck on a select query and was wondering if someone could help. I
> have I've written a database app. that helps me run my business
> (trucking). I need however to write a query that shows me all of the
> loads that are delivered but not billed (invoiced). Which means that I
> have to select the loads that are delivered but do not have an entry in
> the INVOICED table -- since an entry is made in the INVOICED table
> whenever a load is billed.
>
> I know the query below won't work. Can someone please help me fix it?
>
> SELECT l.load_no l.date FROM loads l, invoiced i
> WHERE l.dlvr_date > 0
> AND l.load_no != i.load_no
>
> Thanks,
>
> Richard
>
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