IN and NOT IN

[ashooo]

Hi,

I'm having a bit of trouble with a SELECT query.

I'm trying to select a count of the number of products which are not part of Invoices, Sales Orders etc.

The code I have so far is....

SELECT COUNT(*) FROM tbProdDesc WHERE
[Stock Code] NOT IN
(SELECT [Stock Code] FROM tbQuotePart UNION
SELECT [Stock Code] FROM tbInvoicePart UNION
SELECT [Stock Code] FROM tbSOPart UNION
SELECT [Stock Code] FROM tbBIPart UNION
SELECT [Stock Code] FROM tbPOPart)

However this brings back 0, when it should be over 28000.

If i change it to In, instead of NOT IN i.e.

SELECT COUNT(*) FROM tbProdDesc WHERE
[Stock Code] IN
(SELECT [Stock Code] FROM tbQuotePart UNION
SELECT [Stock Code] FROM tbInvoicePart UNION
SELECT [Stock Code] FROM tbSOPart UNION
SELECT [Stock Code] FROM tbBIPart UNION
SELECT [Stock Code] FROM tbPOPart)

This brings back 700 odd records which is correct.

For some reason it does not like my NOT IN command.

Any help is much apprecitaed.

Thanks

 

[IanWaterman]

why not use a join

SELECT COUNT(*) FROM tbProdDesc p
left outer join
(SELECT [Stock Code] FROM tbQuotePart UNION
SELECT [Stock Code] FROM tbInvoicePart UNION
SELECT [Stock Code] FROM tbSOPart UNION
SELECT [Stock Code] FROM tbBIPart UNION
SELECT [Stock Code] FROM tbPOPart) u
on p.Stock Code = u.Stock Code
where u.stock Code is null

 

[PHV]

You may also try this:

SELECT COUNT(*) FROM tbProdDesc WHERE
    NOT ([Stock Code] IN 
    (SELECT [Stock Code] FROM tbQuotePart UNION 
     SELECT [Stock Code] FROM tbInvoicePart UNION
     SELECT [Stock Code] FROM tbSOPart UNION
     SELECT [Stock Code] FROM tbBIPart UNION
     SELECT [Stock Code] FROM tbPOPart))

BTW, does tbProdDesc has rows with NULL [Stock Code] ?

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[ashooo]

IanWaterman - Your select statement works but I need to turn it into a Delete statement, and I'm not sure of the syntax changes I would need when deleting with a joined query.

PHV - Your select statement still brings back 0, when it should be 28000 ish. There are no rows with Null [Stock Code].

Thanks for your help.

 

[PHV]

And this ?

SELECT COUNT(*) FROM tbProdDesc 
WHERE [Stock Code] NOT IN (SELECT [Stock Code] FROM tbQuotePart)
  AND [Stock Code] NOT IN (SELECT [Stock Code] FROM tbInvoicePart)
  AND [Stock Code] NOT IN (SELECT [Stock Code] FROM tbSOPart)
  AND [Stock Code] NOT IN (SELECT [Stock Code] FROM tbBIPart)
  AND [Stock Code] NOT IN (SELECT [Stock Code] FROM tbPOPart)

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[ashooo]

Still returns 0.

I managed to do it by adopting IanWaterman's code.

DELETE tbProdDesc FROM
(
SELECT p.* FROM tbProdDesc p
left outer join
(SELECT [Stock Code] FROM tbQuotePart UNION
SELECT [Stock Code] FROM tbInvoicePart UNION
SELECT [Stock Code] FROM tbSOPart UNION
SELECT [Stock Code] FROM tbBIPart UNION
SELECT [Stock Code] FROM tbPOPart) u
on p.[Stock Code] = u.[Stock Code]
WHERE u.[Stock Code] IS NULL)
) AS t1
WHERE tbProdDesc.[Stock Code] = t1.[Stock Code]

Thanks for all your help, it's much appreciated.

 

[JarlH]

What about NULL's?

If one (or more) stock codes are NULL, the NOT IN-SELECT will return 0 rows.