From: Илья Конюхов <ilyakon(at)mail(dot)ru>
To: pgsql-sql(at)postgresql(dot)org
Subject:
Date: 2005-10-24 14:18:07
Message-ID: E1EU39L-0004Ck-00.ilyakon-mail-ru@f55.mail.ru
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For example, consider the queres:

SELECT * FROM table1 WHERE field1=1 AND field2=1;

SELECT * FROM table1 WHERE field2=1 AND field1=1;

These two queries are logically equivalent. But in all cases the planner generates a query plan that performs field1=1 condition, and then field2=1 condition, as there is a index on field1.

Is it possible to instruct the PostgreSQL query planner to perform field2=1 condition first, and then field1=1 condition?

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