Re: text -> time cast problem
От | Thomas Lockhart |
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Тема | Re: text -> time cast problem |
Дата | |
Msg-id | 3C1238F8.B8CBB9DD@fourpalms.org обсуждение исходный текст |
Ответ на | Re: text -> time cast problem (Peter Eisentraut <peter_e@gmx.net>) |
Ответы |
Re: text -> time cast problem
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Список | pgsql-hackers |
> > This seems fair. Would this approach imply that CURRENT_TIME and > > CURRENT_TIMESTAMP should not apply default precision to their return > > values? Right now, "CURRENT_TIME" is equivalent to "CURRENT_TIME(0)" > > and "CURRENT_TIMESTAMP" eq to "CURRENT_TIMESTAMP(6)". > Yes, I had been thinking that myself, but hadn't got round to mentioning > it to the list yet. (Even if you do accept default precisions for time > & timestamp columns, I can see nothing in the spec that justifies > applying those default precisions to CURRENT_TIME/TIMESTAMP. AFAICS, > the precision of their results when they are given no argument is > just plain not specified.) I'll shift the default precisions of CURRENT_TIME to match that of CURRENT_TIMESTAMP, which is currently six (6). As you might know, 7.2 has sub-second system time available, which was not true in previous releases. But that time is only good to microseconds, so the six digits of precision is a good match for that. - Thomas
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