| From: | Mark Jewiss <mark(at)office(dot)knowledge(dot)com> |
|---|---|
| To: | JT Kirkpatrick <jt-kirkpatrick(at)mpsllc(dot)com> |
| Cc: | "'pgsql-sql(at)hub(dot)org'" <pgsql-sql(at)hub(dot)org> |
| Subject: | Re: [SQL] time intervals |
| Date: | 1999-04-30 08:10:00 |
| Message-ID: | Pine.BSF.4.05.9904300905520.10443-100000@office.knowledge.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-sql |
> I have two fields, timein & timeout, both defined as type "time". how can
> i get the difference between the two?? i am connecting to postgres through
> access97 and trying to run a simple query to show me timeout, timein, and
> timeout-timein, but the calculation is returning an error.
In SQL you can do a DATEDIFF...I'm not in front of postgresql so am not
sure if it supports this.
Syntax is
select datediff (day, mydate, 'Jan 10 1999'
from table
If mydate = Jan 9, then the result is one. I think datediff accepts
datetime, so if you specify it properly (i.e. '1 Jan 1999 10:05") then
you'll get the right answers. Just change day to whatever you need.
Regards,
Mark.
--
Mark Jewiss
Knowledge Matters Limited
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