mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-10-04 04:06:49 +02:00
da09dea3e3
Christopher Kings-Lynne
174 lines
5.1 KiB
Plaintext
174 lines
5.1 KiB
Plaintext
<!--
|
|
$PostgreSQL: pgsql/doc/src/sgml/ref/alter_database.sgml,v 1.13 2004/07/05 02:34:43 momjian Exp $
|
|
PostgreSQL documentation
|
|
-->
|
|
|
|
<refentry id="SQL-ALTERDATABASE">
|
|
<refmeta>
|
|
<refentrytitle id="sql-alterdatabase-title">ALTER DATABASE</refentrytitle>
|
|
<refmiscinfo>SQL - Language Statements</refmiscinfo>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>ALTER DATABASE</refname>
|
|
<refpurpose>change a database</refpurpose>
|
|
</refnamediv>
|
|
|
|
<indexterm zone="sql-alterdatabase">
|
|
<primary>ALTER DATABASE</primary>
|
|
</indexterm>
|
|
|
|
<refsynopsisdiv>
|
|
<synopsis>
|
|
ALTER DATABASE <replaceable class="PARAMETER">name</replaceable> SET <replaceable>parameter</replaceable> { TO | = } { <replaceable>value</replaceable> | DEFAULT }
|
|
ALTER DATABASE <replaceable class="PARAMETER">name</replaceable> RESET <replaceable>parameter</replaceable>
|
|
|
|
ALTER DATABASE <replaceable class="PARAMETER">name</replaceable> RENAME TO <replaceable>newname</replaceable>
|
|
|
|
ALTER DATABASE <replaceable class="PARAMETER">name</replaceable> OWNER TO <replaceable>new_owner</replaceable>
|
|
</synopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>
|
|
<command>ALTER DATABASE</command> is used to change the attributes
|
|
of a database.
|
|
</para>
|
|
|
|
<para>
|
|
The first two forms change the session default of a run-time
|
|
configuration variable for a <productname>PostgreSQL</productname>
|
|
database. Whenever a new session is subsequently started in that
|
|
database, the specified value becomes the session default value.
|
|
The database-specific default overrides whatever setting is present
|
|
in <filename>postgresql.conf</> or has been received from the
|
|
<command>postmaster</command> command line. Only the database
|
|
owner or a superuser can change the session defaults for a
|
|
database.
|
|
</para>
|
|
|
|
<para>
|
|
The third form changes the name of the database. Only the database
|
|
owner can rename a database, and only if he has the
|
|
<literal>CREATEDB</literal> privilege. The current database cannot
|
|
be renamed. (Connect to a different database if you need to do
|
|
that.)
|
|
</para>
|
|
|
|
<para>
|
|
The fourth form changes the owner of the database. Only a superuser
|
|
can change the database's owner.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Parameters</title>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><replaceable class="PARAMETER">name</replaceable></term>
|
|
<listitem>
|
|
<para>
|
|
The name of the database whose session defaults are to be altered.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><replaceable>parameter</replaceable></term>
|
|
<term><replaceable>value</replaceable></term>
|
|
<listitem>
|
|
<para>
|
|
Set the session default for this database of the specified
|
|
configuration parameter to the given value. If
|
|
<replaceable>value</replaceable> is <literal>DEFAULT</literal>
|
|
or, equivalently, <literal>RESET</literal> is used, the
|
|
database-specific variable setting is removed and the system-wide
|
|
default
|
|
setting will be inherited in new sessions. Use <literal>RESET
|
|
ALL</literal> to clear all settings.
|
|
</para>
|
|
|
|
<para>
|
|
See <xref linkend="sql-set" endterm="sql-set-title"> and <xref linkend="runtime-config">
|
|
for more information about allowed parameter names
|
|
and values.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><replaceable>newname</replaceable></term>
|
|
<listitem>
|
|
<para>
|
|
The new name of the database.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Notes</title>
|
|
|
|
<para>
|
|
Using <xref linkend="sql-alteruser" endterm="sql-alteruser-title">,
|
|
it is also possible to tie a session default to a specific user
|
|
rather than a database. User-specific settings override database-specific
|
|
ones if there is a conflict.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Examples</title>
|
|
|
|
<para>
|
|
To disable index scans by default in the database
|
|
<literal>test</literal>:
|
|
|
|
<programlisting>
|
|
ALTER DATABASE test SET enable_indexscan TO off;
|
|
</programlisting>
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Compatibility</title>
|
|
|
|
<para>
|
|
The <command>ALTER DATABASE</command> statement is a
|
|
<productname>PostgreSQL</productname> extension.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
|
|
<simplelist type="inline">
|
|
<member><xref linkend="sql-alteruser" endterm="sql-alteruser-title"></member>
|
|
<member><xref linkend="sql-createdatabase" endterm="sql-createdatabase-title"></member>
|
|
<member><xref linkend="sql-dropdatabase" endterm="sql-dropdatabase-title"></member>
|
|
<member><xref linkend="sql-set" endterm="sql-set-title"></member>
|
|
</simplelist>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:nil
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"../reference.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:"/usr/lib/sgml/catalog"
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
-->
|