Обсуждение: pgsql: Department of marginal improvements: teach tupconvert.c to avoid

Log Message:
-----------
Department of marginal improvements: teach tupconvert.c to avoid doing a
physical conversion when there are dropped columns in the same places in
the input and output tupdescs.  This avoids possible performance loss from
the recent patch to improve dropped-column handling, in some cases where
the old code would have worked.

Modified Files:
--------------
    pgsql/src/backend/access/common:
        tupconvert.c (r1.1 -> r1.2)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/common/tupconvert.c?r1=1.1&r2=1.2)