Re: [GENERAL] Extracting time from timestamp
| От | Christopher Kings-Lynne |
|---|---|
| Тема | Re: [GENERAL] Extracting time from timestamp |
| Дата | |
| Msg-id | 0a2101c2ef76$25a53a80$6500a8c0@fhp.internal обсуждение исходный текст |
| Ответ на | Fwd: Re: [GENERAL] Extracting time from timestamp ("Shridhar Daithankar<shridhar_daithankar@persistent.co.in>" <shridhar_daithankar@persistent.co.in>) |
| Список | pgsql-hackers |
> > select "time"(abstime(timestamp 'now')) from bookings; > > select "time"(timestamp 'now') from bookings; > > First of all, thanks, it worked.. > > And What's so holy about "" if it is a function? It's really old 7.1 syntax, not supported from 7.2+. Basically it's because time can now have a precision. eg. a field of type TIME(4) will have decimal places of millisecond precision. You need to quote the function to make it get treated as a function rather than a type definition... A better (standard) way to express it is probably: select cast(cast(current_timestamp as abstime) as time) from bookings; or even select current_timestamp::abstime::time from bookings; Chris
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