> I have 2 tables:
>
> bases, and properties
>
> base has a ZIPCODE field in the table, as does the properties table.
>
> I'm trying to find all bases that do NOT have a property in that zip code.
>
> What I've tried is:
The general answer:
http://www.bitbybit.dk/mysqlfaq/faq.html#ch7_10_0
In your case, it comes out to something like:
SELECT cb.*, cp.*
FROM classified_bases AS cb
LEFT JOIN classified_properties AS cp
ON cb.ZIP = cp.ZIPCODE
WHERE cp.ZIPCODE IS NULL
AND cb.BASEORLOC = 'B'
AND cb.STATE = 'VA'
AND cb.STATE = cp.STATE;
/ Carsten
--
Carsten H. Pedersen
keeper and maintainer of the bitbybit.dk MySQL FAQ
http://www.bitbybit.dk/mysqlfaq
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