t, so avoid that.  This improves robustness when
      the kernel is nearly out of file descriptors.
     </P
></LI
><LI
><P
>      Avoid planner crash with joins to unflattened subqueries (Tom Lane)
     </P
></LI
><LI
><P
>      Fix planning of non-strict equivalence clauses above outer joins
      (Tom Lane)
     </P
><P
>      The planner could derive incorrect constraints from a clause equating
      a non-strict construct to something else, for example
      <TT
CLASS="LITERAL"
>WHERE COALESCE(foo, 0)