Bruce Momjian <pgman@candle.pha.pa.us> writes:
> <para>
> ! Genetic query optimization (<acronym>GEQO</acronym>) randomly
> ! tests execution plans. Therefore, when the number of tables
> ! exceeds <varname>geqo</> and genetic query optimization is in use,
> ! the execution plan will change each time the statement is executed.
> </para>
geqo_threshold, please --- geqo is a boolean.
Possibly better wording: Therefore, when the number of tables exceeds
geqo_threshold causing genetic query optimization to be used, the
execution plan is likely to change each time the statement is executed.
regards, tom lane
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TIP 2: Don't 'kill -9' the postmaster
