On Aug 16, 2006, at 8:23 AM, Matteo Bertini wrote:
Hello all!
I'm quite new to pg, but I'm using it quite a lot in the last few
monts.
Deeping in new features, I found a question: is it possible to hint
an unique result from a select?
Mainly, thinking about partitions, I'd like to create a small,
frequently accessed partition and a big, rarely accessed partition.
I'd like to hint pg to stop the query on the parent partition at
the first found item (and so hint not to analyze all the childs),
because I know the index I'm using is unique.
Possible? Usefull?
"select foo from bar limit 1" ?
I don't know if there's any guaranteed ordering of results from
a union query, though, and that's what a query on a set of
inherited tables will expand to, pretty much.
Cheers,
Steve
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