Thread: pgsql: Fix extraction of week and quarter fields from intervals.
Fix extraction of week and quarter fields from intervals. "EXTRACT(WEEK FROM interval_value)" formerly threw an error. Define it as "tm->tm_mday / 7". (With C99 division semantics, this gives consistent results for negative intervals.) "EXTRACT(QUARTER FROM interval_value)" has been implemented all along, but it formerly gave extremely strange results for negative intervals. Fix it so that the output for -N months is the negative of the output for N months. Per bug #18348 from Michael Bondarenko and subsequent discussion. Discussion: https://postgr.es/m/18348-b097a3587dfde8a4@postgresql.org Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/6be39d77a70df52d5a0f2eb414ef9901ccf17e5a Modified Files -------------- doc/src/sgml/func.sgml | 13 +++++++- src/backend/utils/adt/timestamp.c | 18 +++++++++- src/test/regress/expected/interval.out | 61 ++++++++++++++++++++++++++-------- src/test/regress/sql/interval.sql | 18 ++++++++++ 4 files changed, 94 insertions(+), 16 deletions(-)