mirror of
https://github.com/postgres/postgres.git
synced 2025-07-23 03:21:12 +03:00
5ba04cd9f1
use it, as per my proposal of yesterday. This gives us a means of determining the zone offset to impute to an unlabeled timestamp that is both efficient and reliable, unlike all our previous tries involving mktime() and localtime(). The behavior for invalid or ambiguous times at a DST transition is fixed to be really and truly "assume standard time", fixing a bug that has come and gone repeatedly but was back again in 7.4. (There is some ongoing discussion about whether we should raise an error instead, but for the moment I'll make it do what it was previously intended to do.)
This is a PostgreSQL adapted version of the timezone library from: ftp://elsie.nci.nih.gov/pub/tzcode*.tar.gz The data files under data/ are an exact copy of the latest data set from ftp://elsie.nci.nih.gov/pub/tzdata*.tar.gz Since time zone rules change frequently in some parts of the world, we should endeavor to update the data files before each PostgreSQL release.