Split out tiebreaker comparisons from comparetup_* functions Previously, if a specialized comparator found equal datum1 keys, the "comparetup" function would repeat the comparison on the datum before proceeding with the unabbreviated first key and/or additional sort keys.
Move comparing additional sort keys into "tiebreak" functions so that specialized comparators can call these directly if needed, avoiding duplicate work. Reviewed by David Rowley Discussion: https://postgr.es/m/CAFBsxsGaVfUrjTghpf%3DkDBYY%3DjWx1PN-fuusVe7Vw5s0XqGdGw%40mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/c9bfa40914be4a0882b904834c2bd32775a50d7b Modified Files -------------- src/backend/utils/sort/tuplesort.c | 9 +-- src/backend/utils/sort/tuplesortvariants.c | 125 ++++++++++++++++++++++------- src/include/utils/tuplesort.h | 7 ++ 3 files changed, 108 insertions(+), 33 deletions(-)
