pgsql: Make GROUP BY work properly for datatypes that only support - Mailing list pgsql-committers

Log Message:
-----------
Make GROUP BY work properly for datatypes that only support hashing and not
sorting.  The infrastructure for this was all in place already; it's only
necessary to fix the planner to not assume that sorting is always an available
option.

Modified Files:
--------------
    pgsql/src/backend/optimizer/plan:
        planmain.c (r1.107 -> r1.108)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/plan/planmain.c?r1=1.107&r2=1.108)
        planner.c (r1.236 -> r1.237)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/plan/planner.c?r1=1.236&r2=1.237)
    pgsql/src/backend/parser:
        parse_clause.c (r1.172 -> r1.173)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_clause.c?r1=1.172&r2=1.173)