<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>pg_operator</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REV="MADE"
HREF="mailto:pgsql-docs@postgresql.org"><LINK
REL="HOME"
TITLE="PostgreSQL 8.2.14 Documentation"
HREF="index.html"><LINK
REL="UP"
TITLE="System Catalogs"
HREF="catalogs.html"><LINK
REL="PREVIOUS"
TITLE="pg_opclass"
HREF="catalog-pg-opclass.html"><LINK
REL="NEXT"
TITLE="pg_pltemplate"
HREF="catalog-pg-pltemplate.html"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="stylesheet.css"><META
HTTP-EQUIV="Content-Type"
CONTENT="text/html; charset=ISO-8859-1"><META
NAME="creation"
CONTENT="2009-09-04T05:25:47"></HEAD
><BODY
CLASS="SECT1"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="5"
ALIGN="center"
VALIGN="bottom"
>PostgreSQL 8.2.14 Documentation</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
HREF="catalog-pg-opclass.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
HREF="catalogs.html"
>Fast Backward</A
></TD
><TD
WIDTH="60%"
ALIGN="center"
VALIGN="bottom"
>Chapter 43. System Catalogs</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="top"
><A
HREF="catalogs.html"
>Fast Forward</A
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="top"
><A
HREF="catalog-pg-pltemplate.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="CATALOG-PG-OPERATOR"
>43.25. <TT
CLASS="STRUCTNAME"
>pg_operator</TT
></A
></H1
><A
NAME="AEN64147"
></A
><P
> The catalog <TT
CLASS="STRUCTNAME"
>pg_operator</TT
> stores information about operators.
See <A
HREF="sql-createoperator.html"
><I
>CREATE OPERATOR</I
></A
>
and <A
HREF="xoper.html"
>Section 33.12</A
> for more information.
</P
><DIV
CLASS="TABLE"
><A
NAME="AEN64153"
></A
><P
><B
>Table 43-25. <TT
CLASS="STRUCTNAME"
>pg_operator</TT
> Columns</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><COL><THEAD
><TR
><TH
>Name</TH
><TH
>Type</TH
><TH
>References</TH
><TH
>Description</TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprname</TT
></TD
><TD
><TT
CLASS="TYPE"
>name</TT
></TD
><TD
> </TD
><TD
>Name of the operator</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprnamespace</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-namespace.html"
><TT
CLASS="STRUCTNAME"
>pg_namespace</TT
></A
>.oid</TT
></TD
><TD
> The OID of the namespace that contains this operator
</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprowner</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-authid.html"
><TT
CLASS="STRUCTNAME"
>pg_authid</TT
></A
>.oid</TT
></TD
><TD
>Owner of the operator</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprkind</TT
></TD
><TD
><TT
CLASS="TYPE"
>char</TT
></TD
><TD
> </TD
><TD
> <TT
CLASS="LITERAL"
>b</TT
> = infix (<SPAN
CLASS="QUOTE"
>"both"</SPAN
>), <TT
CLASS="LITERAL"
>l</TT
> = prefix
(<SPAN
CLASS="QUOTE"
>"left"</SPAN
>), <TT
CLASS="LITERAL"
>r</TT
> = postfix (<SPAN
CLASS="QUOTE"
>"right"</SPAN
>)
</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprcanhash</TT
></TD
><TD
><TT
CLASS="TYPE"
>bool</TT
></TD
><TD
> </TD
><TD
>This operator supports hash joins</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprleft</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-type.html"
><TT
CLASS="STRUCTNAME"
>pg_type</TT
></A
>.oid</TT
></TD
><TD
>Type of the left operand</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprright</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-type.html"
><TT
CLASS="STRUCTNAME"
>pg_type</TT
></A
>.oid</TT
></TD
><TD
>Type of the right operand</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprresult</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-type.html"
><TT
CLASS="STRUCTNAME"
>pg_type</TT
></A
>.oid</TT
></TD
><TD
>Type of the result</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprcom</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-operator.html"
><TT
CLASS="STRUCTNAME"
>pg_operator</TT
></A
>.oid</TT
></TD
><TD
>Commutator of this operator, if any</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprnegate</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-operator.html"
><TT
CLASS="STRUCTNAME"
>pg_operator</TT
></A
>.oid</TT
></TD
><TD
>Negator of this operator, if any</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprlsortop</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-operator.html"
><TT
CLASS="STRUCTNAME"
>pg_operator</TT
></A
>.oid</TT
></TD
><TD
> If this operator supports merge joins, the operator that sorts
the type of the left-hand operand (<TT
CLASS="LITERAL"
>L<L</TT
>)
</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprrsortop</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-operator.html"
><TT
CLASS="STRUCTNAME"
>pg_operator</TT
></A
>.oid</TT
></TD
><TD
> If this operator supports merge joins, the operator that sorts
the type of the right-hand operand (<TT
CLASS="LITERAL"
>R<R</TT
>)
</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprltcmpop</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-operator.html"
><TT
CLASS="STRUCTNAME"
>pg_operator</TT
></A
>.oid</TT
></TD
><TD
> If this operator supports merge joins, the less-than operator that
compares the left and right operand types (<TT
CLASS="LITERAL"
>L<R</TT
>)
</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprgtcmpop</TT
></TD
><TD
><TT
CLASS="TYPE"
>oid</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-operator.html"
><TT
CLASS="STRUCTNAME"
>pg_operator</TT
></A
>.oid</TT
></TD
><TD
> If this operator supports merge joins, the greater-than operator that
compares the left and right operand types (<TT
CLASS="LITERAL"
>L>R</TT
>)
</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprcode</TT
></TD
><TD
><TT
CLASS="TYPE"
>regproc</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-proc.html"
><TT
CLASS="STRUCTNAME"
>pg_proc</TT
></A
>.oid</TT
></TD
><TD
>Function that implements this operator</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprrest</TT
></TD
><TD
><TT
CLASS="TYPE"
>regproc</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-proc.html"
><TT
CLASS="STRUCTNAME"
>pg_proc</TT
></A
>.oid</TT
></TD
><TD
>Restriction selectivity estimation function for this operator</TD
></TR
><TR
><TD
><TT
CLASS="STRUCTFIELD"
>oprjoin</TT
></TD
><TD
><TT
CLASS="TYPE"
>regproc</TT
></TD
><TD
><TT
CLASS="LITERAL"
><A
HREF="catalog-pg-proc.html"
><TT
CLASS="STRUCTNAME"
>pg_proc</TT
></A
>.oid</TT
></TD
><TD
>Join selectivity estimation function for this operator</TD
></TR
></TBODY
></TABLE
></DIV
><P
> Unused column contain zeroes. For example, <TT
CLASS="STRUCTFIELD"
>oprleft</TT
>
is zero for a prefix operator.
</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="catalog-pg-opclass.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="catalog-pg-pltemplate.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><TT
CLASS="STRUCTNAME"
>pg_opclass</TT
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="catalogs.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><TT
CLASS="STRUCTNAME"
>pg_pltemplate</TT
></TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
distrib
>
Mandriva
>
2010.0
>
i586
>
media
>
contrib-release
>
by-pkgid
>
a866202fe868538f89a755dbcabc378b
>
files
>
66
