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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 >SPI_saveplan</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="Interface Functions" HREF="spi-interface.html"><LINK REL="PREVIOUS" TITLE="SPI_keepplan" HREF="spi-spi-keepplan.html"><LINK REL="NEXT" TITLE="Interface Support Functions" HREF="spi-interface-support.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="REFENTRY" ><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="SPI_keepplan" HREF="spi-spi-keepplan.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="spi-interface.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="Interface Support Functions" HREF="spi-interface-support.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SPI-SPI-SAVEPLAN" ></A >SPI_saveplan</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN61553" ></A ><H2 >Name</H2 >SPI_saveplan -- save a prepared statement</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN61558" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >SPIPlanPtr SPI_saveplan(SPIPlanPtr <TT CLASS="PARAMETER" >plan</TT >)</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN61561" ></A ><H2 >Description</H2 ><P > <CODE CLASS="FUNCTION" >SPI_saveplan</CODE > copies a passed statement (prepared by <CODE CLASS="FUNCTION" >SPI_prepare</CODE >) into memory that will not be freed by <CODE CLASS="FUNCTION" >SPI_finish</CODE > nor by the transaction manager, and returns a pointer to the copied statement. This gives you the ability to reuse prepared statements in the subsequent invocations of your procedure in the current session. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN61567" ></A ><H2 >Arguments</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="LITERAL" >SPIPlanPtr <TT CLASS="PARAMETER" >plan</TT ></TT ></DT ><DD ><P > the prepared statement to be saved </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN61576" ></A ><H2 >Return Value</H2 ><P > Pointer to the copied statement; or <TT CLASS="SYMBOL" >NULL</TT > if unsuccessful. On error, <TT CLASS="VARNAME" >SPI_result</TT > is set thus: <P ></P ></P><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="SYMBOL" >SPI_ERROR_ARGUMENT</TT ></DT ><DD ><P > if <TT CLASS="PARAMETER" >plan</TT > is <TT CLASS="SYMBOL" >NULL</TT > or invalid </P ></DD ><DT ><TT CLASS="SYMBOL" >SPI_ERROR_UNCONNECTED</TT ></DT ><DD ><P > if called from an unconnected procedure </P ></DD ></DL ></DIV ><P> </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN61594" ></A ><H2 >Notes</H2 ><P > The originally passed-in statement is not freed, so you might wish to do <CODE CLASS="FUNCTION" >SPI_freeplan</CODE > on it to avoid leaking memory until <CODE CLASS="FUNCTION" >SPI_finish</CODE >. </P ><P > In most cases, <CODE CLASS="FUNCTION" >SPI_keepplan</CODE > is preferred to this function, since it accomplishes largely the same result without needing to physically copy the prepared statement's data structures. </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="spi-spi-keepplan.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="spi-interface-support.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SPI_keepplan</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="spi-interface.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Interface Support Functions</TD ></TR ></TABLE ></DIV ></BODY ></HTML >