Log Message: ----------- Tweak writetup_heap/readtup_heap to avoid storing the tuple identity and transaction visibility fields of tuples being sorted. These are always uninteresting in a tuple being sorted (if the fields were actually selected, they'd have been pulled out into user columns beforehand). This saves about 24 bytes per row being sorted, which is a useful savings for any but the widest of sort rows. Per recent discussion. Modified Files: -------------- pgsql/src/backend/utils/sort: tuplesort.c (r1.65 -> r1.66) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/sort/tuplesort.c.diff?r1=1.65&r2=1.66) pgsql/src/include/utils: tuplesort.h (r1.19 -> r1.20) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/utils/tuplesort.h.diff?r1=1.19&r2=1.20)
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