X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=ChangeLog;h=69e1c2e8a398ff9aea1f596584490894d18b2ce5;hb=refs%2Fheads%2Ftimestamp-utc;hp=8827550d1b05b85e99473370d5d846622da0367f;hpb=ade04fc6aa18497812f74950f2b10c23fbb5bf68;p=clsql.git diff --git a/ChangeLog b/ChangeLog index 8827550..69e1c2e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,32 @@ +2018-02-03 Russ Tyndall + * sql/time.lisp, tests/time.lisp: + Better distinguishing between zoneless timestamps and UTC times, + particularly as relates to postgresql-socket(3) backends. Without this + change, timestamptzs are read as localtimes and saved as + localtimes, when they should be read and printed as UTC times, this + bug will lead to dates moving forward every save as they are being + reconverted to UTC again. + + We followed a minimal approach (following postgresql' lead), we + simply add a is-utc? boolean. Before this, zoned times were + converted to UTC, but since we never tracked that it was a UTC + time vs a zoneless time, there was conflation between the two. + Ultimately, adoption of a third party datetime library is my + strong preference (eg: local-time). + + In order to preserver comparability between dates and times + that are local vs UTC. I have started requiring the local-time + library (available from quicklisp and github). While this project + has, as a whole refrained from outside requirements, I think + that we should consider moving to local-time as our date / time + format. Local-time is currently used to automatically convert + zoneless timestamps from localtime to UTC - allowing meaningful + comparisons of all timestamps. There is definitely an overhead + to casting local times to UTC this way, but its the only way to + keep data as it is (zoneless timestamps stay zoneless - UTC stamps + stay UTC and still preserve) + + 2016-01-26 Kevin Rosenberg * Version 6.7.0 release * sql/utils.lisp: Apply patch from Martin Simmons for