<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Built-in Operator Classes</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 9.6.21 Documentation" HREF="index.html"><LINK REL="UP" TITLE="SP-GiST Indexes" HREF="spgist.html"><LINK REL="PREVIOUS" TITLE="Introduction" HREF="spgist-intro.html"><LINK REL="NEXT" TITLE="Extensibility" HREF="spgist-extensibility.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="2021-02-27T18:26:08"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="4" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.6.21 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="Introduction" HREF="spgist-intro.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="spgist.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Chapter 62. SP-GiST Indexes</TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="Extensibility" HREF="spgist-extensibility.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="SPGIST-BUILTIN-OPCLASSES" >62.2. Built-in Operator Classes</A ></H1 ><P > The core <SPAN CLASS="PRODUCTNAME" >PostgreSQL</SPAN > distribution includes the <ACRONYM CLASS="ACRONYM" >SP-GiST</ACRONYM > operator classes shown in <A HREF="spgist-builtin-opclasses.html#SPGIST-BUILTIN-OPCLASSES-TABLE" >Table 62-1</A >. </P ><DIV CLASS="TABLE" ><A NAME="SPGIST-BUILTIN-OPCLASSES-TABLE" ></A ><P ><B >Table 62-1. Built-in <ACRONYM CLASS="ACRONYM" >SP-GiST</ACRONYM > Operator Classes</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Indexed Data Type</TH ><TH >Indexable Operators</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="LITERAL" >kd_point_ops</TT ></TD ><TD ><TT CLASS="TYPE" >point</TT ></TD ><TD > <TT CLASS="LITERAL" ><<</TT > <TT CLASS="LITERAL" ><@</TT > <TT CLASS="LITERAL" ><^</TT > <TT CLASS="LITERAL" >>></TT > <TT CLASS="LITERAL" >>^</TT > <TT CLASS="LITERAL" >~=</TT > </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >quad_point_ops</TT ></TD ><TD ><TT CLASS="TYPE" >point</TT ></TD ><TD > <TT CLASS="LITERAL" ><<</TT > <TT CLASS="LITERAL" ><@</TT > <TT CLASS="LITERAL" ><^</TT > <TT CLASS="LITERAL" >>></TT > <TT CLASS="LITERAL" >>^</TT > <TT CLASS="LITERAL" >~=</TT > </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >range_ops</TT ></TD ><TD >any range type</TD ><TD > <TT CLASS="LITERAL" >&&</TT > <TT CLASS="LITERAL" >&<</TT > <TT CLASS="LITERAL" >&></TT > <TT CLASS="LITERAL" >-|-</TT > <TT CLASS="LITERAL" ><<</TT > <TT CLASS="LITERAL" ><@</TT > <TT CLASS="LITERAL" >=</TT > <TT CLASS="LITERAL" >>></TT > <TT CLASS="LITERAL" >@></TT > </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >box_ops</TT ></TD ><TD ><TT CLASS="TYPE" >box</TT ></TD ><TD > <TT CLASS="LITERAL" ><<</TT > <TT CLASS="LITERAL" >&<</TT > <TT CLASS="LITERAL" >&&</TT > <TT CLASS="LITERAL" >&></TT > <TT CLASS="LITERAL" >>></TT > <TT CLASS="LITERAL" >~=</TT > <TT CLASS="LITERAL" >@></TT > <TT CLASS="LITERAL" ><@</TT > <TT CLASS="LITERAL" >&<|</TT > <TT CLASS="LITERAL" ><<|</TT > <TT CLASS="LITERAL" >|>></TT > <TT CLASS="LITERAL" >|&></TT > </TD ></TR ><TR ><TD ><TT CLASS="LITERAL" >text_ops</TT ></TD ><TD ><TT CLASS="TYPE" >text</TT ></TD ><TD > <TT CLASS="LITERAL" ><</TT > <TT CLASS="LITERAL" ><=</TT > <TT CLASS="LITERAL" >=</TT > <TT CLASS="LITERAL" >></TT > <TT CLASS="LITERAL" >>=</TT > <TT CLASS="LITERAL" >~<=~</TT > <TT CLASS="LITERAL" >~<~</TT > <TT CLASS="LITERAL" >~>=~</TT > <TT CLASS="LITERAL" >~>~</TT > </TD ></TR ></TBODY ></TABLE ></DIV ><P > Of the two operator classes for type <TT CLASS="TYPE" >point</TT >, <TT CLASS="LITERAL" >quad_point_ops</TT > is the default. <TT CLASS="LITERAL" >kd_point_ops</TT > supports the same operators but uses a different index data structure that may offer better performance in some applications. </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="spgist-intro.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="spgist-extensibility.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Introduction</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="spgist.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Extensibility</TD ></TR ></TABLE ></DIV ></BODY ></HTML >