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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 >DROP FOREIGN DATA WRAPPER</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="SQL Commands" HREF="sql-commands.html"><LINK REL="PREVIOUS" TITLE="DROP EXTENSION" HREF="sql-dropextension.html"><LINK REL="NEXT" TITLE="DROP FOREIGN TABLE" HREF="sql-dropforeigntable.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="DROP EXTENSION" HREF="sql-dropextension.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="DROP FOREIGN TABLE" HREF="sql-dropforeigntable.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SQL-DROPFOREIGNDATAWRAPPER" ></A >DROP FOREIGN DATA WRAPPER</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN73681" ></A ><H2 >Name</H2 >DROP FOREIGN DATA WRAPPER -- remove a foreign-data wrapper</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN73686" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >DROP FOREIGN DATA WRAPPER [ IF EXISTS ] <TT CLASS="REPLACEABLE" ><I >name</I ></TT > [ CASCADE | RESTRICT ]</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN73689" ></A ><H2 >Description</H2 ><P > <TT CLASS="COMMAND" >DROP FOREIGN DATA WRAPPER</TT > removes an existing foreign-data wrapper. To execute this command, the current user must be the owner of the foreign-data wrapper. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN73693" ></A ><H2 >Parameters</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="LITERAL" >IF EXISTS</TT ></DT ><DD ><P > Do not throw an error if the foreign-data wrapper does not exist. A notice is issued in this case. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >name</I ></TT ></DT ><DD ><P > The name of an existing foreign-data wrapper. </P ></DD ><DT ><TT CLASS="LITERAL" >CASCADE</TT ></DT ><DD ><P > Automatically drop objects that depend on the foreign-data wrapper (such as servers). </P ></DD ><DT ><TT CLASS="LITERAL" >RESTRICT</TT ></DT ><DD ><P > Refuse to drop the foreign-data wrappers if any objects depend on it. This is the default. </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN73716" ></A ><H2 >Examples</H2 ><P > Drop the foreign-data wrapper <TT CLASS="LITERAL" >dbi</TT >: </P><PRE CLASS="PROGRAMLISTING" >DROP FOREIGN DATA WRAPPER dbi;</PRE ><P></P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN73721" ></A ><H2 >Compatibility</H2 ><P > <TT CLASS="COMMAND" >DROP FOREIGN DATA WRAPPER</TT > conforms to ISO/IEC 9075-9 (SQL/MED). The <TT CLASS="LITERAL" >IF EXISTS</TT > clause is a <SPAN CLASS="PRODUCTNAME" >PostgreSQL</SPAN > extension. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN73727" ></A ><H2 >See Also</H2 ><A HREF="sql-createforeigndatawrapper.html" >CREATE FOREIGN DATA WRAPPER</A >, <A HREF="sql-alterforeigndatawrapper.html" >ALTER FOREIGN DATA WRAPPER</A ></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="sql-dropextension.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="sql-dropforeigntable.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >DROP EXTENSION</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >DROP FOREIGN TABLE</TD ></TR ></TABLE ></DIV ></BODY ></HTML >