Well, the reason I asked is to see both whether the estimates for the various columns were somewhere near reality (if not, then you may need to raise the statistics target for the column) which might affect whether it'd consider using a multi-column index for the conditions and sort rather than the index scan it was using.
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I'm going to have to pull out the 'Practical PostgreSQL' book and brush up on optimizing. This level of optimization is not something I have had to deal with in the past.
Also to make this interesting. The sub-query method is faster at times and slower in others. But doing two separate queries and working on the PostIDNumber field exclusively is always blazingly fast...
Martin Foster
Creator/Designer Ethereal Realms
[EMAIL PROTECTED]
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