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<!--
doc/src/sgml/ref/alter_subscription.sgml
PostgreSQL documentation
-->
<refentry id="SQL-ALTERSUBSCRIPTION">
<indexterm zone="sql-altersubscription">
<primary>ALTER SUBSCRIPTION</primary>
</indexterm>
<refmeta>
<refentrytitle>ALTER SUBSCRIPTION</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>ALTER SUBSCRIPTION</refname>
<refpurpose>change the definition of a subscription</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
ALTER SUBSCRIPTION <replaceable class="PARAMETER">name</replaceable> WITH ( <replaceable class="PARAMETER">suboption</replaceable> [, ... ] ) ]
<phrase>where <replaceable class="PARAMETER">suboption</replaceable> can be:</phrase>
SLOT NAME = <replaceable class="PARAMETER">slot_name</replaceable>
ALTER SUBSCRIPTION <replaceable class="PARAMETER">name</replaceable> SET PUBLICATION <replaceable class="PARAMETER">publication_name</replaceable> [, ...] { REFRESH WITH ( <replaceable class="PARAMETER">puboption</replaceable> [, ... ] ) | NOREFRESH }
ALTER SUBSCRIPTION <replaceable class="PARAMETER">name</replaceable> REFRESH PUBLICATION WITH ( <replaceable class="PARAMETER">puboption</replaceable> [, ... ] )
<phrase>where <replaceable class="PARAMETER">puboption</replaceable> can be:</phrase>
COPY DATA | NOCOPY DATA
ALTER SUBSCRIPTION <replaceable class="PARAMETER">name</replaceable> OWNER TO { <replaceable>new_owner</replaceable> | CURRENT_USER | SESSION_USER }
ALTER SUBSCRIPTION <replaceable class="PARAMETER">name</replaceable> CONNECTION '<replaceable>conninfo</replaceable>'
ALTER SUBSCRIPTION <replaceable class="PARAMETER">name</replaceable> ENABLE
ALTER SUBSCRIPTION <replaceable class="PARAMETER">name</replaceable> DISABLE
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>ALTER SUBSCRIPTION</command> can change most of the subscription
properties that can be specified
in <xref linkend="sql-createsubscription">.
</para>
<para>
To alter the owner, you must also be a direct or indirect member of the
new owning role. The new owner has to be a superuser
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><replaceable class="parameter">name</replaceable></term>
<listitem>
<para>
The name of a subscription whose properties are to be altered.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>CONNECTION '<replaceable class="parameter">conninfo</replaceable>'</literal></term>
<term><literal>SLOT NAME = <replaceable class="parameter">slot_name</replaceable></literal></term>
<listitem>
<para>
These clauses alter properties originally set by
<xref linkend="SQL-CREATESUBSCRIPTION">. See there for more
information.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>SET PUBLICATION <replaceable class="parameter">publication_name</replaceable></literal></term>
<listitem>
<para>
Changes list of subscribed publications. See
<xref linkend="SQL-CREATESUBSCRIPTION"> for more information.
</para>
<para>
When <literal>REFRESH</literal> is specified, this command will also
act like <literal>REFRESH PUBLICATION</literal>. When
<literal>NOREFRESH</literal> is specified, the comamnd will not try to
refresh table information.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>REFRESH PUBLICATION</term>
<listitem>
<para>
Fetch missing table information from publisher. This will start
replication of tables that were added to the subscribed-to publications
since the last invocation of <command>REFRESH PUBLICATION</command> or
since <command>CREATE SUBSCRIPTION</command>.
</para>
<para>
The <literal>COPY DATA</literal> and <literal>NOCOPY DATA</literal>
options specify if the existing data in the publications that are being
subscribed to should be copied. <literal>COPY DATA</literal> is the
default.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>ENABLE</literal></term>
<listitem>
<para>
Enables the previously disabled subscription, starting the logical
replication worker at the end of transaction.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>DISABLE</literal></term>
<listitem>
<para>
Disables the running subscription, stopping the logical replication
worker at the end of transaction.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
Change the publication subscribed by a subscription to
<literal>insert_only</literal>:
<programlisting>
ALTER SUBSCRIPTION mysub SET PUBLICATION insert_only;
</programlisting>
</para>
<para>
Disable (stop) the subscription:
<programlisting>
ALTER SUBSCRIPTION mysub DISABLE;
</programlisting>
</para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
<command>ALTER SUBSCRIPTION</command> is a <productname>PostgreSQL</>
extension.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-createsubscription"></member>
<member><xref linkend="sql-dropsubscription"></member>
<member><xref linkend="sql-createpublication"></member>
<member><xref linkend="sql-alterpublication"></member>
</simplelist>
</refsect1>
</refentry>
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