Re: Oddity with extract microseconds?
От | Bruce Momjian |
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Тема | Re: Oddity with extract microseconds? |
Дата | |
Msg-id | 200512061709.jB6H9JD16121@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: Oddity with extract microseconds? (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Oddity with extract microseconds?
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Список | pgsql-hackers |
Tom Lane wrote: > Christopher Kings-Lynne <chriskl@familyhealth.com.au> writes: > > OK, AndrewSN just pointed out that it's "documented" to work like that... > > ...still seems bizarre... > > It seems reasonably consistent to me. extract() doesn't consider > seconds and fractional seconds to be distinct fields: it's all one > value. The milliseconds and microseconds options just shift the > decimal place for you. I think this illustrates the issue: test=> SELECT date_part('microseconds', '00:00:01.33'::time); date_part----------- 1330000(1 row)test=> SELECT date_part('microseconds','00:03:01.33'::time); date_part----------- 1330000(1 row) Why aren't 'minutes' considered too? Because they aren't 'seconds'. Well, seconds aren't microseconds either. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania19073
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