| From: | Erik Jones <ejones(at)engineyard(dot)com> |
|---|---|
| To: | Miguel Miranda <miguel(dot)mirandag(at)gmail(dot)com> |
| Cc: | pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: date ranges in where |
| Date: | 2009-05-06 21:17:36 |
| Message-ID: | FAC3D4F1-301E-4094-8FE7-FA12E0A853F1@engineyard.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
On May 6, 2009, at 2:12 PM, Miguel Miranda wrote:
> Hi, what is the recommended way to select a range of dates?
>
> Lets say a have a table with a lastlogin (timestamp) column and i
> want toknow what users logged in for last time between 2009-05-01
> and 2009-05-02?
>
> I know that a simple
>
> where lastlogin between '2009-05-01' and '2009-05-02' doesnt work
> beacuse it doesnt include who logged in 2009-05-02 15:30:00, etc...
WHERE lastlogin >= '2009-05-01' AND lastlogin < '2009-05-03'
or, if the values have are some unknown X and Y dates then you can do
this:
WHERE lastlogin >= 'X' AND lastlogin <= 'Y' + '1 day'::interval
Erik Jones, Database Administrator
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