xample to
</P><PRE
CLASS="PROGRAMLISTING"
>INSERT INTO dest (col) SELECT foo + bar FROM src;</PRE
><P>
    Here, <TT
CLASS="LITERAL"
>dest</TT
> and <TT
CLASS="LITERAL"
>src</TT
> must be table names, and
    <TT
CLASS="LITERAL"
>col</TT
> must be a column of <TT
CLASS="LITERAL"
>dest</TT
>, but <TT
CLASS="LITERAL"
>foo</TT
>
    and <TT
CLASS="LITERAL"
>bar</TT
> might reasonably be either variables of the function
    or columns of <TT
CLASS="LITERAL"
>src</TT
>.
   </P
><P
>    By default, <SPAN
CLASS="A