 references
    as the variable (which is compatible with <SPAN
CLASS="APPLICATION"
>PL/pgSQL</SPAN
>'s
    behavior before <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> 9.0), or as the
    table column (which is compatible with some other systems such as
    <SPAN
CLASS="PRODUCTNAME"
>Oracle</SPAN
>).
   </P
><P
>    To change this behavior on a system-wide basis, set the configuration
    parameter <TT
CLASS="LITERAL"
>plpgsql.variable_conflict</TT
> to one of
    <TT
CLASS="LITERAL"
>error</TT
>, <TT
CLA