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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2020-09-30 15:40:23 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2020-09-30 15:40:23 -0400 |
| commit | 4857e6fe16c2082d23025c03875e6fd74e714ff2 (patch) | |
| tree | 52a3647c3fbf828d9282f55dda1c8309c8ae2f57 /src/backend/access/gist/gistold.c | |
| parent | 40a8fb1e0f413110207773ee70f4d1105c2b4345 (diff) | |
| download | postgresql-4857e6fe16c2082d23025c03875e6fd74e714ff2.tar.gz postgresql-4857e6fe16c2082d23025c03875e6fd74e714ff2.zip | |
Fix handling of BC years in to_date/to_timestamp.
Previously, a conversion such as
to_date('-44-02-01','YYYY-MM-DD')
would result in '0045-02-01 BC', as the code attempted to interpret
the negative year as BC, but failed to apply the correction needed
for our internal handling of BC years. Fix the off-by-one problem.
Also, arrange for the combination of a negative year and an
explicit "BC" marker to cancel out and produce AD. This is how
the negative-century case works, so it seems sane to do likewise.
Continue to read "year 0000" as 1 BC. Oracle would throw an error,
but we've accepted that case for a long time so I'm hesitant to
change it in a back-patch.
Per bug #16419 from Saeed Hubaishan. Back-patch to all supported
branches.
Dar Alathar-Yemen and Tom Lane
Discussion: https://postgr.es/m/16419-d8d9db0a7553f01b@postgresql.org
Diffstat (limited to 'src/backend/access/gist/gistold.c')
0 files changed, 0 insertions, 0 deletions