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Department of marginal improvements: teach tupconvert.c to avoid doing a
authorTom Lane <tgl@sss.pgh.pa.us>
Mon, 17 Aug 2009 20:34:31 +0000 (20:34 +0000)
committerTom Lane <tgl@sss.pgh.pa.us>
Mon, 17 Aug 2009 20:34:31 +0000 (20:34 +0000)
commit67a5f8ff9e168bf2ec3540b8a389efb5f46b76fc
treeca0fcc3fd29f6c0814ae35b4fc63a5ca5badfa7f
parent26a90c654f19263449a70e24a3a7bc3df1908121
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.
src/backend/access/common/tupconvert.c