ION"
>PL/pgSQL</SPAN
>
    variables than you use for column names.  For example,
    if you consistently name function variables
    <TT
CLASS="LITERAL"
>v_<TT
CLASS="REPLACEABLE"
><I
>something</I
></TT
></TT
> while none of your
    column names start with <TT
CLASS="LITERAL"
>v_</TT
>, no conflicts will occur.
   </P
><P
>    Alternatively you can qualify ambiguous references to make them clear.
    In the above example, <TT
CLASS="LITERAL"
>src.foo</TT
> would be an unambiguous reference
    to the tab