Re: if else query help
| От | Josh Berkus |
|---|---|
| Тема | Re: if else query help |
| Дата | |
| Msg-id | 39E5DA4B.DCE967D6@agliodbs.com обсуждение исходный текст |
| Ответ на | if else query help ("Brian C. Doyle" <bcdoyle@mindspring.com>) |
| Список | pgsql-sql |
Brian, Jean-Christophe,
>Someone corrects me if I'm wrong, I come from the Oracle world...
>
> Dates (or I should say TimeStamps) are stored as floating point values
> : the integer part is the number of days since a certain date
> (epoch or 01/01/1970 on unix-based databases) and the fractionnal part is the
> portion of the day (although I don't know --yet-- how to convert
> date2-date1 to an integer, trunc does not work).
You're doing this the hard way. One of Postgres' best features is its
rich collection of date-manipulation functions. Please see:
... Hmmmm. The online docs appear to be down. When they're back up,
please check the sections on: Date/Time data types, and Date/Time
manipulation functions.
-Josh Berkus
P.S. Brian, a general tutorial on writing SQL, such as O'Reilly's
soon-to-be released SQL book, might help you a great deal.
--
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