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@ -1,5 +1,5 @@ |
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<!-- |
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$PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.35 2005/11/04 23:13:59 petere Exp $ |
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$PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.36 2005/11/04 23:53:18 tgl Exp $ |
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--> |
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<chapter Id="runtime-config"> |
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<title>Server Configuration</title> |
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@ -1970,13 +1970,13 @@ archive_command = 'copy "%p" /mnt/server/archivedir/"%f"' # Windows |
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<listitem> |
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<para> |
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Enables or disables the query planner's use of table constraints to |
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limit table access. The default is <literal>off</>. |
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optimize queries. The default is <literal>off</>. |
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</para> |
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<para> |
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When this parameter is <literal>on</>, the planner compares |
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query conditions with table <literal>CHECK</> constraints, and |
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omits scanning tables where the conditions contradict the |
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omits scanning tables for which the conditions contradict the |
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constraints. (Presently this is done only for child tables of |
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inheritance scans.) For example: |
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@ -2010,7 +2010,7 @@ SELECT * FROM parent WHERE key = 2400; |
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</para> |
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<para> |
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Refer to <xref linkend="ce-partitioning"> for more information |
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Refer to <xref linkend="ddl-partitioning"> for more information |
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on using constraint exclusion and partitioning. |
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</para> |
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</listitem> |
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