Обсуждение: pgsql: Ensure age() returns a stable value rather than the latest value

Ensure age() returns a stable value rather than the latest value

Branch
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REL9_0_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/67ff11b42b2811c18fc9dfa54ded02303a082f7c

Modified Files
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src/backend/access/transam/xact.c |   22 ++++++++++++++++++++++
src/backend/utils/adt/xid.c       |    8 +++-----
src/include/access/xact.h         |    1 +
3 files changed, 26 insertions(+), 5 deletions(-)