Обсуждение: pgsql: Revert buggy optimization of index scans

Revert buggy optimization of index scans

606c0123d627 attempted to reduce cost of index scans using > and <
strategies, though got that completely wrong in a few complex cases.

Revert whole patch until we find a safe optimization.

Branch
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REL9_5_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/bf7ced5e2dc8622f88129437a9adafc0bdd83041

Modified Files
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src/backend/access/nbtree/nbtsearch.c | 27 ---------------------------
src/backend/access/nbtree/nbtutils.c  |  7 -------
src/include/access/nbtree.h           |  1 -
3 files changed, 35 deletions(-)