pgsql-server/src backend/nodes/outfuncs.c back ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@svr1.postgresql.org    04/01/05 19:39:54

Modified files:
    src/backend/nodes: outfuncs.c
    src/backend/optimizer/path: costsize.c indxpath.c orindxpath.c
    src/backend/optimizer/plan: createplan.c
    src/backend/optimizer/util: pathnode.c restrictinfo.c
    src/backend/utils/adt: selfuncs.c
    src/include/nodes: relation.h
    src/include/optimizer: paths.h restrictinfo.h

Log message:
    Adjust indexscan planning logic to keep RestrictInfo nodes associated
    with index qual clauses in the Path representation.  This saves a little
    work during createplan and (probably more importantly) allows reuse of
    cached selectivity estimates during indexscan planning.  Also fix latent
    bug: wrong plan would have been generated for a 'special operator' used
    in a nestloop-inner-indexscan join qual, because the special operator
    would not have gotten into the list of quals to recheck.  This bug is
    only latent because at present the special-operator code could never
    trigger on a join qual, but sooner or later someone will want to do it.