D"
>EXPLAIN</TT
> to handle gating Result nodes within
      inner-indexscan subplans (Tom Lane)
     </P
><P
>      The usual symptom of this oversight was <SPAN
CLASS="QUOTE"
>"bogus varno"</SPAN
> errors.
     </P
></LI
><LI
><P
>      Fix btree preprocessing of <TT
CLASS="REPLACEABLE"
><I
>indexedcol</I
></TT
> <TT
CLASS="LITERAL"
>IS
      NULL</TT
> conditions (Dean Rasheed)
     </P
><P
>      Such a condition is unsatisfiable if combined with any other type of
      btree-indexable condition on the 