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Diffstat (limited to 'doc/src/sgml/perform.sgml')
| -rw-r--r-- | doc/src/sgml/perform.sgml | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/doc/src/sgml/perform.sgml b/doc/src/sgml/perform.sgml index a31d3aa5caa..6b7afe2b025 100644 --- a/doc/src/sgml/perform.sgml +++ b/doc/src/sgml/perform.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/perform.sgml,v 1.32 2003/09/11 17:31:45 momjian Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/perform.sgml,v 1.33 2003/09/11 18:30:38 momjian Exp $ --> <chapter id="performance-tips"> @@ -603,7 +603,7 @@ SELECT * FROM a, b, c WHERE a.id = b.id AND b.ref = c.id; <productname>PostgreSQL</productname> planner will switch from exhaustive search to a <firstterm>genetic</firstterm> probabilistic search through a limited number of possibilities. (The switch-over threshold is - set by the <varname>GEQO_THRESHOLD</varname> run-time + set by the <varname>geqo_threshold</varname> run-time parameter.) The genetic search takes less time, but it won't necessarily find the best possible plan. |