hi.
left join the two tables then check for NOT NULL in one of the fields from
invoiced that will be empty if they haven't been invoiced:
SELECT l.load_no l.date
FROM loads l LEFT JOIN invoiced i on l.load_no = i.load_no
where i.invoiced_on_this_date IS NULL
obviously, substitute a real column for invoiced_on_this_date...
HTH.
-ravi.
-----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
---------------------------------------------------------------------
Before posting, please check:
http://www.mysql.com/manual.php (the manual)
http://lists.mysql.com/ (the list archive)
To request this thread, e-mail <[EMAIL PROTECTED]>
To unsubscribe, e-mail <[EMAIL PROTECTED]>
Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
---------------------------------------------------------------------
Before posting, please check:
http://www.mysql.com/manual.php (the manual)
http://lists.mysql.com/ (the list archive)
To request this thread, e-mail <[EMAIL PROTECTED]>
To unsubscribe, e-mail <[EMAIL PROTECTED]>
Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
