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><H1
><A
NAME="SQL-ALTERAGGREGATE"
></A
>ALTER AGGREGATE</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN52215"
></A
><H2
>Name</H2
>ALTER AGGREGATE -- change the definition of an aggregate function</DIV
><A
NAME="AEN52218"
></A
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN52220"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>ALTER AGGREGATE <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> ( <TT
CLASS="REPLACEABLE"
><I
>type</I
></TT
> [ , ... ] ) RENAME TO <TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
>
ALTER AGGREGATE <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> ( <TT
CLASS="REPLACEABLE"
><I
>type</I
></TT
> [ , ... ] ) OWNER TO <TT
CLASS="REPLACEABLE"
><I
>new_owner</I
></TT
>
ALTER AGGREGATE <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> ( <TT
CLASS="REPLACEABLE"
><I
>type</I
></TT
> [ , ... ] ) SET SCHEMA <TT
CLASS="REPLACEABLE"
><I
>new_schema</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN52231"
></A
><H2
>Description</H2
><P
> <TT
CLASS="COMMAND"
>ALTER AGGREGATE</TT
> changes the definition of an
aggregate function.
</P
><P
> You must own the aggregate function to use <TT
CLASS="COMMAND"
>ALTER AGGREGATE</TT
>.
To change the schema of an aggregate function, you must also have
<TT
CLASS="LITERAL"
>CREATE</TT
> 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 <TT
CLASS="LITERAL"
>CREATE</TT
> privilege on
the aggregate function's schema. (These restrictions enforce that altering
the owner doesn't do anything you couldn't do by dropping and recreating
the aggregate function. However, a superuser can alter ownership of any
aggregate function anyway.)
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN52239"
></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 aggregate function.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>type</I
></TT
></DT
><DD
><P
> An input data type on which the aggregate function operates.
To reference a zero-argument aggregate function, write <TT
CLASS="LITERAL"
>*</TT
>
in place of the list of input data types.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
></DT
><DD
><P
> The new name of the aggregate function.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_owner</I
></TT
></DT
><DD
><P
> The new owner of the aggregate function.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_schema</I
></TT
></DT
><DD
><P
> The new schema for the aggregate function.
</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN52268"
></A
><H2
>Examples</H2
><P
> To rename the aggregate function <TT
CLASS="LITERAL"
>myavg</TT
> for type
<TT
CLASS="TYPE"
>integer</TT
> to <TT
CLASS="LITERAL"
>my_average</TT
>:
</P><PRE
CLASS="PROGRAMLISTING"
>ALTER AGGREGATE myavg(integer) RENAME TO my_average;</PRE
><P>
</P
><P
> To change the owner of the aggregate function <TT
CLASS="LITERAL"
>myavg</TT
> for type
<TT
CLASS="TYPE"
>integer</TT
> to <TT
CLASS="LITERAL"
>joe</TT
>:
</P><PRE
CLASS="PROGRAMLISTING"
>ALTER AGGREGATE myavg(integer) OWNER TO joe;</PRE
><P>
</P
><P
> To move the aggregate function <TT
CLASS="LITERAL"
>myavg</TT
> for type
<TT
CLASS="TYPE"
>integer</TT
> into schema <TT
CLASS="LITERAL"
>myschema</TT
>:
</P><PRE
CLASS="PROGRAMLISTING"
>ALTER AGGREGATE myavg(integer) SET SCHEMA myschema;</PRE
><P>
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN52285"
></A
><H2
>Compatibility</H2
><P
> There is no <TT
CLASS="COMMAND"
>ALTER AGGREGATE</TT
> statement in the SQL
standard.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN52289"
></A
><H2
>See Also</H2
><A
HREF="sql-createaggregate.html"
><I
>CREATE AGGREGATE</I
></A
>, <A
HREF="sql-dropaggregate.html"
><I
>DROP AGGREGATE</I
></A
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