Re: timestamp with/without time zone
От | Bruce Momjian |
---|---|
Тема | Re: timestamp with/without time zone |
Дата | |
Msg-id | 200106190128.f5J1S4o14728@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: timestamp with/without time zone (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: timestamp with/without time zone
|
Список | pgsql-hackers |
> Bruce Momjian <pgman@candle.pha.pa.us> writes: > > Very few people know the standards stuff so it seems we should just call > > it timestamp and do the best we can. Basically by mentioning "with > > timezone" we are making the standards people happy but confusing our > > users. > > I don't believe we're making any standards-lovers happy either, because > the datatype in question *is* *not* SQL9x's TIMESTAMP WITH TIME ZONE. > Given that no one actually wants to change its behavior to conform to > either of the standard's datatypes, ISTM that calling it something > different from either of those two is the appropriate path. > > At some point (if someone is foolish enough to want to implement the > spec's semantics) we might have three distinct datatypes called > timestamp, timestamp with time zone, and timestamp without time zone, > with the first of these (the existing type) being the recommended > choice. What we have at the moment is that lacking implementations > for the last two, we map them into the first one. That doesn't seem > unreasonable to me. But to have a clean upgrade path from one to three > types, we need to be sure we call the existing type what it is, and not > mislabel it as one of the spec-compliant types. I am confused what you are suggesting here. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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