pe whose columns are determined by specification in the
     calling query, as discussed in <A
HREF="queries-table-expressions.html#QUERIES-TABLEFUNCTIONS"
>Section 7.2.1.4</A
>.
    </P
><P
>     <SPAN
CLASS="APPLICATION"
>PL/pgSQL</SPAN
> functions can be declared to accept a variable
     number of arguments by using the <TT
CLASS="LITERAL"
>VARIADIC</TT
> marker.  This
     works exactly the same way as for SQL functions, as discussed in
     <A
HREF="xfunc-sql.html#XFUNC-SQL-VARIADIC-FUNCTIONS"
>Sectio