Forum OpenACS Q&A: Response to Faster Selects with study of EXPLAIN

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Posted by James Thornton on
Quote from Tom Lane:

"Postgres absolutely does not care [about table order]: the optimizer will always consider both A-join-B and B-join-A orders for every join it has to do. [Y]ou can constrain the join pairs the optimizer will consider if you use explicit-JOIN syntax --- but each pair will be considered in both directions".