<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <HTML ><HEAD ><TITLE >pg_lo_lseek</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 7.4.1 Documentation" HREF="index.html"><LINK REL="UP" TITLE="pgtcl Command Reference" HREF="libpgtcl-ref.html"><LINK REL="PREVIOUS" TITLE="pg_lo_write" HREF="pgtcl-pglowrite.html"><LINK REL="NEXT" TITLE="pg_lo_tell" HREF="pgtcl-pglotell.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META NAME="creation" CONTENT="2003-12-22T03:48:47"></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" >PostgreSQL 7.4.1 Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="pgtcl-pglowrite.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="pgtcl-pglowrite.html" >Fast Backward</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="pgtcl-pglotell.html" >Fast Forward</A ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="pgtcl-pglotell.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="PGTCL-PGLOLSEEK" ></A >pg_lo_lseek</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN23095" ></A ><H2 >Name</H2 >pg_lo_lseek -- seek to a position of a large object<A NAME="IX-PGTCL-PGLOLSEEK-2" ></A ></DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN23100" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >pg_lo_lseek <VAR CLASS="PARAMETER" >conn</VAR > <VAR CLASS="PARAMETER" >descriptor</VAR > <VAR CLASS="PARAMETER" >offset</VAR > <VAR CLASS="PARAMETER" >whence</VAR ></PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN23106" ></A ><H2 >Description</H2 ><P > <CODE CLASS="FUNCTION" >pg_lo_lseek</CODE > moves the current read/write position to <VAR CLASS="PARAMETER" >offset</VAR > bytes from the position specified by <VAR CLASS="PARAMETER" >whence</VAR >. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN23112" ></A ><H2 >Arguments</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><VAR CLASS="PARAMETER" >conn</VAR ></DT ><DD ><P > The handle of a connection to the database in which the large object exists. </P ></DD ><DT ><VAR CLASS="PARAMETER" >descriptor</VAR ></DT ><DD ><P > A descriptor for the large object from <CODE CLASS="FUNCTION" >pg_lo_open</CODE >. </P ></DD ><DT ><VAR CLASS="PARAMETER" >offset</VAR ></DT ><DD ><P > The new seek position in bytes. </P ></DD ><DT ><VAR CLASS="PARAMETER" >whence</VAR ></DT ><DD ><P > Specified from where to calculate the new seek position: <TT CLASS="LITERAL" >SEEK_CUR</TT > (from current position), <TT CLASS="LITERAL" >SEEK_END</TT > (from end), or <TT CLASS="LITERAL" >SEEK_SET</TT > (from start). </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN23139" ></A ><H2 >Return Value</H2 ><P > None </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="pgtcl-pglowrite.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="pgtcl-pglotell.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >pg_lo_write</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="libpgtcl-ref.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >pg_lo_tell</TD ></TR ></TABLE ></DIV ></BODY ></HTML >