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  • Committer: Bazaar Package Importer
  • Author(s): Martin Pitt
  • Date: 2011-05-11 10:41:53 UTC
  • Revision ID: james.westby@ubuntu.com-20110511104153-psbh2o58553fv1m0
Tags: upstream-9.1~beta1
Import upstream version 9.1~beta1

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doc/src/sgml/html/catalog-pg-opfamily.html
 
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 
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<HTML
 
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><HEAD
 
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><TITLE
 
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>pg_opfamily</TITLE
 
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><META
 
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NAME="GENERATOR"
 
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CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
 
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REV="MADE"
 
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HREF="mailto:pgsql-docs@postgresql.org"><LINK
 
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REL="HOME"
 
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TITLE="PostgreSQL 9.1beta1 Documentation"
 
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HREF="index.html"><LINK
 
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REL="UP"
 
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TITLE="System Catalogs"
 
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HREF="catalogs.html"><LINK
 
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REL="PREVIOUS"
 
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TITLE="pg_operator"
 
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HREF="catalog-pg-operator.html"><LINK
 
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REL="NEXT"
 
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TITLE="pg_pltemplate"
 
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HREF="catalog-pg-pltemplate.html"><LINK
 
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REL="STYLESHEET"
 
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TYPE="text/css"
 
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HREF="stylesheet.css"><META
 
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HTTP-EQUIV="Content-Type"
 
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CONTENT="text/html; charset=ISO-8859-1"><META
 
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NAME="creation"
 
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CONTENT="2011-04-27T21:20:33"></HEAD
 
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><BODY
 
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CLASS="SECT1"
 
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><DIV
 
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CLASS="NAVHEADER"
 
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><TABLE
 
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SUMMARY="Header navigation table"
 
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WIDTH="100%"
 
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BORDER="0"
 
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CELLPADDING="0"
 
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CELLSPACING="0"
 
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><TR
 
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><TH
 
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COLSPAN="5"
 
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ALIGN="center"
 
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VALIGN="bottom"
 
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><A
 
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HREF="index.html"
 
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>PostgreSQL 9.1beta1 Documentation</A
 
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></TH
 
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></TR
 
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><TR
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><A
 
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TITLE="pg_operator"
 
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HREF="catalog-pg-operator.html"
 
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ACCESSKEY="P"
 
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>Prev</A
 
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></TD
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><A
 
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TITLE="System Catalogs"
 
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HREF="catalogs.html"
 
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>Fast Backward</A
 
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></TD
 
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><TD
 
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WIDTH="60%"
 
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ALIGN="center"
 
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VALIGN="bottom"
 
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>Chapter 45. System Catalogs</TD
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><A
 
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TITLE="System Catalogs"
 
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HREF="catalogs.html"
 
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>Fast Forward</A
 
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></TD
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><A
 
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TITLE="pg_pltemplate"
 
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HREF="catalog-pg-pltemplate.html"
 
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ACCESSKEY="N"
 
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>Next</A
 
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></TD
 
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></TR
 
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></TABLE
 
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><HR
 
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ALIGN="LEFT"
 
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WIDTH="100%"></DIV
 
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><DIV
 
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CLASS="SECT1"
 
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><H1
 
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CLASS="SECT1"
 
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><A
 
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NAME="CATALOG-PG-OPFAMILY"
 
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>45.33. <TT
 
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CLASS="STRUCTNAME"
 
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>pg_opfamily</TT
 
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></A
 
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></H1
 
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><P
 
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>   The catalog <TT
 
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CLASS="STRUCTNAME"
 
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>pg_opfamily</TT
 
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> defines operator families.
 
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   Each operator family is a collection of operators and associated
 
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   support routines that implement the semantics specified for a particular
 
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   index access method.  Furthermore, the operators in a family are all
 
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   <SPAN
 
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CLASS="QUOTE"
 
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>"compatible"</SPAN
 
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>, in a way that is specified by the access method.
 
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   The operator family concept allows cross-data-type operators to be used
 
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   with indexes and to be reasoned about using knowledge of access method
 
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   semantics.
 
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  </P
 
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><P
 
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>   Operator families are described at length in <A
 
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HREF="xindex.html"
 
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>Section 35.14</A
 
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>.
 
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  </P
 
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><DIV
 
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CLASS="TABLE"
 
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><A
 
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NAME="AEN87454"
 
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></A
 
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><P
 
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><B
 
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>Table 45-33. <TT
 
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CLASS="STRUCTNAME"
 
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>pg_opfamily</TT
 
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> Columns</B
 
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></P
 
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><TABLE
 
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BORDER="1"
 
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CLASS="CALSTABLE"
 
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><COL><COL><COL><COL><THEAD
 
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><TR
 
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><TH
 
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>Name</TH
 
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><TH
 
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>Type</TH
 
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><TH
 
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>References</TH
 
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><TH
 
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>Description</TH
 
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></TR
 
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></THEAD
 
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><TBODY
 
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><TR
 
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><TD
 
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><TT
 
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CLASS="STRUCTFIELD"
 
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>opfmethod</TT
 
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></TD
 
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><TD
 
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><TT
 
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CLASS="TYPE"
 
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>oid</TT
 
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></TD
 
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><TD
 
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><TT
 
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CLASS="LITERAL"
 
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><A
 
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HREF="catalog-pg-am.html"
 
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><TT
 
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CLASS="STRUCTNAME"
 
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>pg_am</TT
 
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></A
 
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>.oid</TT
 
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></TD
 
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><TD
 
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>Index access method operator family is for</TD
 
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></TR
 
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><TR
 
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><TD
 
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><TT
 
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CLASS="STRUCTFIELD"
 
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>opfname</TT
 
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></TD
 
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><TD
 
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><TT
 
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CLASS="TYPE"
 
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>name</TT
 
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></TD
 
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><TD
 
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>&nbsp;</TD
 
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><TD
 
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>Name of this operator family</TD
 
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></TR
 
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><TR
 
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><TD
 
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><TT
 
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CLASS="STRUCTFIELD"
 
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>opfnamespace</TT
 
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></TD
 
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><TD
 
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><TT
 
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CLASS="TYPE"
 
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>oid</TT
 
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></TD
 
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><TD
 
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><TT
 
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CLASS="LITERAL"
 
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><A
 
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HREF="catalog-pg-namespace.html"
 
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><TT
 
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CLASS="STRUCTNAME"
 
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>pg_namespace</TT
 
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></A
 
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>.oid</TT
 
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></TD
 
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><TD
 
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>Namespace of this operator family</TD
 
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></TR
 
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><TR
 
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><TD
 
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><TT
 
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CLASS="STRUCTFIELD"
 
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>opfowner</TT
 
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></TD
 
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><TD
 
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><TT
 
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CLASS="TYPE"
 
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>oid</TT
 
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></TD
 
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><TD
 
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><TT
 
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CLASS="LITERAL"
 
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><A
 
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HREF="catalog-pg-authid.html"
 
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><TT
 
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CLASS="STRUCTNAME"
 
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>pg_authid</TT
 
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></A
 
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>.oid</TT
 
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></TD
 
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><TD
 
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>Owner of the operator family</TD
 
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></TR
 
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></TBODY
 
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></TABLE
 
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></DIV
 
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><P
 
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>   The majority of the information defining an operator family is not in its
 
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   <TT
 
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CLASS="STRUCTNAME"
 
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>pg_opfamily</TT
 
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> row, but in the associated rows in
 
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   <A
 
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HREF="catalog-pg-amop.html"
 
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><TT
 
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CLASS="STRUCTNAME"
 
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>pg_amop</TT
 
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></A
 
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>,
 
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   <A
 
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HREF="catalog-pg-amproc.html"
 
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><TT
 
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CLASS="STRUCTNAME"
 
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>pg_amproc</TT
 
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></A
 
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>,
 
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   and
 
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   <A
 
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HREF="catalog-pg-opclass.html"
 
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><TT
 
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CLASS="STRUCTNAME"
 
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>pg_opclass</TT
 
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></A
 
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>.
 
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  </P
 
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></DIV
 
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><DIV
 
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CLASS="NAVFOOTER"
 
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><HR
 
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ALIGN="LEFT"
 
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WIDTH="100%"><TABLE
 
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SUMMARY="Footer navigation table"
 
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WIDTH="100%"
 
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BORDER="0"
 
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CELLPADDING="0"
 
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CELLSPACING="0"
 
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><TR
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><A
 
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HREF="catalog-pg-operator.html"
 
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ACCESSKEY="P"
 
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>Prev</A
 
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></TD
 
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><TD
 
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WIDTH="34%"
 
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ALIGN="center"
 
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VALIGN="top"
 
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><A
 
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HREF="index.html"
 
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ACCESSKEY="H"
 
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>Home</A
 
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></TD
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><A
 
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HREF="catalog-pg-pltemplate.html"
 
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ACCESSKEY="N"
 
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>Next</A
 
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></TD
 
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></TR
 
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><TR
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><TT
 
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CLASS="STRUCTNAME"
 
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>pg_operator</TT
 
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></TD
 
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><TD
 
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WIDTH="34%"
 
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ALIGN="center"
 
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VALIGN="top"
 
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><A
 
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HREF="catalogs.html"
 
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ACCESSKEY="U"
 
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>Up</A
 
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></TD
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><TT
 
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CLASS="STRUCTNAME"
 
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>pg_pltemplate</TT
 
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></TD
 
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></TR
 
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></TABLE
 
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></DIV
 
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></BODY
 
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></HTML
 
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>
 
 
b'\\ No newline at end of file'