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<chapter Id="runtime-config">
<title>Server Configuration</title>
<listitem>
<para>
Use genetic query optimization to plan queries with at least
- this many <literal>FROM</> items involved. (Note that an outer
- <literal>JOIN</> construct counts as only one <literal>FROM</>
+ this many <literal>FROM</> items involved. (Note that a
+ <literal>FULL OUTER JOIN</> construct counts as only one <literal>FROM</>
item.) The default is 12. For simpler queries it is usually best
to use the deterministic, exhaustive planner, but for queries with
many tables the deterministic planner takes too long.