patch for pgsql/doc/src/sgml/runtime
От | Joseph Shraibman |
---|---|
Тема | patch for pgsql/doc/src/sgml/runtime |
Дата | |
Msg-id | 3DEE7E59.5080108@selectacast.net обсуждение исходный текст |
Ответы |
Re: patch for pgsql/doc/src/sgml/runtime
Re: patch for pgsql/doc/src/sgml/runtime |
Список | pgsql-patches |
[jks@d1 ~/work/postgres/pgsql/doc/src/sgml] diff -C 3 runtime.sgml.orig runtime.sgml.mod *** runtime.sgml.orig Wed Dec 4 17:08:30 2002 --- runtime.sgml.mod Wed Dec 4 17:13:15 2002 *************** *** 841,847 **** <para> Sets the query optimizer's estimate of the cost of a nonsequentially fetched disk page. This is measured as a ! multiple of the cost of a sequential page fetch. </para> </listitem> </varlistentry> --- 841,849 ---- <para> Sets the query optimizer's estimate of the cost of a nonsequentially fetched disk page. This is measured as a ! multiple of the cost of a sequential page fetch. A higher ! value makes it more likely a sequential scan will be used, ! a lower value makes it more likely an index scan will be used. </para> </listitem> </varlistentry> -- Joseph Shraibman joseph@xtenit.com Increase signal to noise ratio. http://xis.xtenit.com
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