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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Genetic Query Optimizer</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 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="Internals" HREF="internals.html"><LINK REL="PREVIOUS" TITLE="Foreign Data Wrapper Query Planning" HREF="fdw-planning.html"><LINK REL="NEXT" TITLE="Query Handling as a Complex Optimization Problem" HREF="geqo-intro.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="2017-11-06T22:43:11"></HEAD ><BODY CLASS="CHAPTER" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="Foreign Data Wrapper Query Planning" HREF="fdw-planning.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="internals.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="Query Handling as a Complex Optimization Problem" HREF="geqo-intro.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="CHAPTER" ><H1 ><A NAME="GEQO" ></A >Chapter 51. Genetic Query Optimizer</H1 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT >51.1. <A HREF="geqo-intro.html" >Query Handling as a Complex Optimization Problem</A ></DT ><DT >51.2. <A HREF="geqo-intro2.html" >Genetic Algorithms</A ></DT ><DT >51.3. <A HREF="geqo-pg-intro.html" >Genetic Query Optimization (<ACRONYM CLASS="ACRONYM" >GEQO</ACRONYM >) in PostgreSQL</A ></DT ><DD ><DL ><DT >51.3.1. <A HREF="geqo-pg-intro.html#AEN98372" >Generating Possible Plans with <ACRONYM CLASS="ACRONYM" >GEQO</ACRONYM ></A ></DT ><DT >51.3.2. <A HREF="geqo-pg-intro.html#GEQO-FUTURE" >Future Implementation Tasks for <SPAN CLASS="PRODUCTNAME" >PostgreSQL</SPAN > <ACRONYM CLASS="ACRONYM" >GEQO</ACRONYM ></A ></DT ></DL ></DD ><DT >51.4. <A HREF="geqo-biblio.html" >Further Reading</A ></DT ></DL ></DIV ><P > </P><DIV CLASS="NOTE" ><BLOCKQUOTE CLASS="NOTE" ><P ><B >Author: </B > Written by Martin Utesch (<CODE CLASS="EMAIL" ><<A HREF="mailto:utesch@aut.tu-freiberg.de" >utesch@aut.tu-freiberg.de</A >></CODE >) for the Institute of Automatic Control at the University of Mining and Technology in Freiberg, Germany. </P ></BLOCKQUOTE ></DIV ><P> </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="fdw-planning.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="geqo-intro.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Foreign Data Wrapper Query Planning</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="internals.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Query Handling as a Complex Optimization Problem</TD ></TR ></TABLE ></DIV ></BODY ></HTML >