Thanks for the reply... but which query will be faster and less expensive? I don't have a table now with 4 million rows, but I'm thinking of building such a table. Querying it would return 1 row. The alternative is to query an existing table of 200k rows, and return 800 rows.
Actually, as a side-issue to my last reply...
How does one row contain the same information as 800?
-- Richard Huxton Archonet Ltd
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