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Correlated subquery that contains 'count()'
Posted by: seeriuss
Date: November 08, 2004 04:44PM

Hi,

I have a customer table called 'CustomerPreferences' that has the total number of products they want daily. Once per day, a PHP page is run that assigns products to our customers and records that in a table called CustomerProducts. It would save the script a good amount of time to not include customers that have already received their total amount.

So I have the following SQL:

SELECT a.CustomerId
FROM CustomerPreferences a
WHERE (
SELECT count(b.BrokerId)
FROM CustomerProducts b
WHERE b.CustomerId = a.CustomerId
) < a.MaxProducts


It gives me a syntax error when I run a query like this. Any ideas?

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Correlated subquery that contains 'count()'
November 08, 2004 04:44PM


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