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disjunctive queries - Mailing list pgsql-general

From andrew
Subject disjunctive queries
Date
Msg-id 29d3b0b90608040020s34144bd5i3d49a6898c3ecb7c@mail.gmail.com
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Hi,

What are the techniques used by PostgreSQL to optimize disjunctive
queries? Treat every disjunct separately? Or special optimization is
performed to save the cost?

Could any one give me some general ideas? Thanks!

--
andrew

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