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diff --git a/doc/src/sgml/ref/alter_procedure.sgml b/doc/src/sgml/ref/alter_procedure.sgml new file mode 100644 index 0000000..20a6238 --- /dev/null +++ b/doc/src/sgml/ref/alter_procedure.sgml @@ -0,0 +1,289 @@ +<!-- +doc/src/sgml/ref/alter_procedure.sgml +PostgreSQL documentation +--> + +<refentry id="sql-alterprocedure"> + <indexterm zone="sql-alterprocedure"> + <primary>ALTER PROCEDURE</primary> + </indexterm> + + <refmeta> + <refentrytitle>ALTER PROCEDURE</refentrytitle> + <manvolnum>7</manvolnum> + <refmiscinfo>SQL - Language Statements</refmiscinfo> + </refmeta> + + <refnamediv> + <refname>ALTER PROCEDURE</refname> + <refpurpose>change the definition of a procedure</refpurpose> + </refnamediv> + + <refsynopsisdiv> +<synopsis> +ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ] + <replaceable class="parameter">action</replaceable> [ ... ] [ RESTRICT ] +ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ] + RENAME TO <replaceable>new_name</replaceable> +ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ] + OWNER TO { <replaceable>new_owner</replaceable> | CURRENT_ROLE | CURRENT_USER | SESSION_USER } +ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ] + SET SCHEMA <replaceable>new_schema</replaceable> +ALTER PROCEDURE <replaceable>name</replaceable> [ ( [ [ <replaceable class="parameter">argmode</replaceable> ] [ <replaceable class="parameter">argname</replaceable> ] <replaceable class="parameter">argtype</replaceable> [, ...] ] ) ] + [ NO ] DEPENDS ON EXTENSION <replaceable>extension_name</replaceable> + +<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase> + + [ EXTERNAL ] SECURITY INVOKER | [ EXTERNAL ] SECURITY DEFINER + SET <replaceable class="parameter">configuration_parameter</replaceable> { TO | = } { <replaceable class="parameter">value</replaceable> | DEFAULT } + SET <replaceable class="parameter">configuration_parameter</replaceable> FROM CURRENT + RESET <replaceable class="parameter">configuration_parameter</replaceable> + RESET ALL +</synopsis> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para> + <command>ALTER PROCEDURE</command> changes the definition of a + procedure. + </para> + + <para> + You must own the procedure to use <command>ALTER PROCEDURE</command>. + To change a procedure's schema, you must also have <literal>CREATE</literal> + privilege on the new schema. + To alter the owner, you must also be a direct or indirect member of the new + owning role, and that role must have <literal>CREATE</literal> privilege on + the procedure's schema. (These restrictions enforce that altering the owner + doesn't do anything you couldn't do by dropping and recreating the procedure. + However, a superuser can alter ownership of any procedure anyway.) + </para> + </refsect1> + + <refsect1> + <title>Parameters</title> + + <variablelist> + <varlistentry> + <term><replaceable class="parameter">name</replaceable></term> + <listitem> + <para> + The name (optionally schema-qualified) of an existing procedure. If no + argument list is specified, the name must be unique in its schema. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">argmode</replaceable></term> + + <listitem> + <para> + The mode of an argument: <literal>IN</literal>, <literal>OUT</literal>, + <literal>INOUT</literal>, or <literal>VARIADIC</literal>. If omitted, + the default is <literal>IN</literal>. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">argname</replaceable></term> + + <listitem> + <para> + The name of an argument. + Note that <command>ALTER PROCEDURE</command> does not actually pay + any attention to argument names, since only the argument data + types are used to determine the procedure's identity. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">argtype</replaceable></term> + + <listitem> + <para> + The data type(s) of the procedure's arguments (optionally + schema-qualified), if any. + See <xref linkend="sql-dropprocedure"/> for the details of how + the procedure is looked up using the argument data type(s). + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">new_name</replaceable></term> + <listitem> + <para> + The new name of the procedure. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">new_owner</replaceable></term> + <listitem> + <para> + The new owner of the procedure. Note that if the procedure is + marked <literal>SECURITY DEFINER</literal>, it will subsequently + execute as the new owner. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">new_schema</replaceable></term> + <listitem> + <para> + The new schema for the procedure. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable class="parameter">extension_name</replaceable></term> + <listitem> + <para> + This form marks the procedure as dependent on the extension, or no longer + dependent on the extension if <literal>NO</literal> is specified. + A procedure that's marked as dependent on an extension is dropped when the + extension is dropped, even if cascade is not specified. + A procedure can depend upon multiple extensions, and will be dropped when + any one of those extensions is dropped. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><literal><optional> EXTERNAL </optional> SECURITY INVOKER</literal></term> + <term><literal><optional> EXTERNAL </optional> SECURITY DEFINER</literal></term> + + <listitem> + <para> + Change whether the procedure is a security definer or not. The + key word <literal>EXTERNAL</literal> is ignored for SQL + conformance. See <xref linkend="sql-createprocedure"/> for more information about + this capability. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><replaceable>configuration_parameter</replaceable></term> + <term><replaceable>value</replaceable></term> + <listitem> + <para> + Add or change the assignment to be made to a configuration parameter + when the procedure is called. If + <replaceable>value</replaceable> is <literal>DEFAULT</literal> + or, equivalently, <literal>RESET</literal> is used, the procedure-local + setting is removed, so that the procedure executes with the value + present in its environment. Use <literal>RESET + ALL</literal> to clear all procedure-local settings. + <literal>SET FROM CURRENT</literal> saves the value of the parameter that + is current when <command>ALTER PROCEDURE</command> is executed as the value + to be applied when the procedure is entered. + </para> + + <para> + See <xref linkend="sql-set"/> and + <xref linkend="runtime-config"/> + for more information about allowed parameter names and values. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term><literal>RESTRICT</literal></term> + + <listitem> + <para> + Ignored for conformance with the SQL standard. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Examples</title> + + <para> + To rename the procedure <literal>insert_data</literal> with two arguments + of type <type>integer</type> to <literal>insert_record</literal>: +<programlisting> +ALTER PROCEDURE insert_data(integer, integer) RENAME TO insert_record; +</programlisting> + </para> + + <para> + To change the owner of the procedure <literal>insert_data</literal> with + two arguments of type <type>integer</type> to <literal>joe</literal>: +<programlisting> +ALTER PROCEDURE insert_data(integer, integer) OWNER TO joe; +</programlisting> + </para> + + <para> + To change the schema of the procedure <literal>insert_data</literal> with + two arguments of type <type>integer</type> + to <literal>accounting</literal>: +<programlisting> +ALTER PROCEDURE insert_data(integer, integer) SET SCHEMA accounting; +</programlisting> + </para> + + <para> + To mark the procedure <literal>insert_data(integer, integer)</literal> as + being dependent on the extension <literal>myext</literal>: +<programlisting> +ALTER PROCEDURE insert_data(integer, integer) DEPENDS ON EXTENSION myext; +</programlisting> + </para> + + <para> + To adjust the search path that is automatically set for a procedure: +<programlisting> +ALTER PROCEDURE check_password(text) SET search_path = admin, pg_temp; +</programlisting> + </para> + + <para> + To disable automatic setting of <varname>search_path</varname> for a procedure: +<programlisting> +ALTER PROCEDURE check_password(text) RESET search_path; +</programlisting> + The procedure will now execute with whatever search path is used by its + caller. + </para> + </refsect1> + + <refsect1> + <title>Compatibility</title> + + <para> + This statement is partially compatible with the <command>ALTER + PROCEDURE</command> statement in the SQL standard. The standard allows more + properties of a procedure to be modified, but does not provide the + ability to rename a procedure, make a procedure a security definer, + attach configuration parameter values to a procedure, + or change the owner, schema, or volatility of a procedure. The standard also + requires the <literal>RESTRICT</literal> key word, which is optional in + <productname>PostgreSQL</productname>. + </para> + </refsect1> + + <refsect1> + <title>See Also</title> + + <simplelist type="inline"> + <member><xref linkend="sql-createprocedure"/></member> + <member><xref linkend="sql-dropprocedure"/></member> + <member><xref linkend="sql-alterfunction"/></member> + <member><xref linkend="sql-alterroutine"/></member> + </simplelist> + </refsect1> +</refentry> |