<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >ALTER COLLATION</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 9.6.17 Documentation" HREF="index.html"><LINK REL="UP" TITLE="SQL Commands" HREF="sql-commands.html"><LINK REL="PREVIOUS" TITLE="ALTER AGGREGATE" HREF="sql-alteraggregate.html"><LINK REL="NEXT" TITLE="ALTER CONVERSION" HREF="sql-alterconversion.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="2020-02-15T12:30:38"></HEAD ><BODY CLASS="REFENTRY" ><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 9.6.17 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="ALTER AGGREGATE" HREF="sql-alteraggregate.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="ALTER CONVERSION" HREF="sql-alterconversion.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SQL-ALTERCOLLATION" ></A >ALTER COLLATION</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN72773" ></A ><H2 >Name</H2 >ALTER COLLATION -- change the definition of a collation</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN72776" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >ALTER COLLATION <TT CLASS="REPLACEABLE" ><I >name</I ></TT > RENAME TO <TT CLASS="REPLACEABLE" ><I >new_name</I ></TT > ALTER COLLATION <TT CLASS="REPLACEABLE" ><I >name</I ></TT > OWNER TO { <TT CLASS="REPLACEABLE" ><I >new_owner</I ></TT > | CURRENT_USER | SESSION_USER } ALTER COLLATION <TT CLASS="REPLACEABLE" ><I >name</I ></TT > SET SCHEMA <TT CLASS="REPLACEABLE" ><I >new_schema</I ></TT ></PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN72784" ></A ><H2 >Description</H2 ><P > <TT CLASS="COMMAND" >ALTER COLLATION</TT > changes the definition of a collation. </P ><P > You must own the collation to use <TT CLASS="COMMAND" >ALTER COLLATION</TT >. To alter the owner, you must also be a direct or indirect member of the new owning role, and that role must have <TT CLASS="LITERAL" >CREATE</TT > privilege on the collation's schema. (These restrictions enforce that altering the owner doesn't do anything you couldn't do by dropping and recreating the collation. However, a superuser can alter ownership of any collation anyway.) </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN72791" ></A ><H2 >Parameters</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="REPLACEABLE" ><I >name</I ></TT ></DT ><DD ><P > The name (optionally schema-qualified) of an existing collation. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >new_name</I ></TT ></DT ><DD ><P > The new name of the collation. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >new_owner</I ></TT ></DT ><DD ><P > The new owner of the collation. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >new_schema</I ></TT ></DT ><DD ><P > The new schema for the collation. </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN72814" ></A ><H2 >Examples</H2 ><P > To rename the collation <TT CLASS="LITERAL" >de_DE</TT > to <TT CLASS="LITERAL" >german</TT >: </P><PRE CLASS="PROGRAMLISTING" >ALTER COLLATION "de_DE" RENAME TO german;</PRE ><P> </P ><P > To change the owner of the collation <TT CLASS="LITERAL" >en_US</TT > to <TT CLASS="LITERAL" >joe</TT >: </P><PRE CLASS="PROGRAMLISTING" >ALTER COLLATION "en_US" OWNER TO joe;</PRE ><P></P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN72824" ></A ><H2 >Compatibility</H2 ><P > There is no <TT CLASS="COMMAND" >ALTER COLLATION</TT > statement in the SQL standard. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN72828" ></A ><H2 >See Also</H2 ><A HREF="sql-createcollation.html" >CREATE COLLATION</A >, <A HREF="sql-dropcollation.html" >DROP COLLATION</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-alteraggregate.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-alterconversion.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ALTER AGGREGATE</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" >ALTER CONVERSION</TD ></TR ></TABLE ></DIV ></BODY ></HTML >