On 01/18/2013 03:31 PM, Rich Shepard wrote:
> My Web searching foo fails me, and I don't see the answer in the
> postgres
> docs so I hope someone here can point me in the proper direction.
>
> There is a table for bacteriological data that contains two columns for
> the date and time the water was collected and another two columns for the
> date and time the plates were read (since the latter should be less than 24
> hours after the former). It would be simpler to combine each date-time pair
> into a single timestamptz column. Seems to me that this can be done with
> SQL within psql, but just how is not obvious to me because I've not worked
> with timestamp values before.
>
> What is the most parsimonious way to combine the two columns into one?
How are they stored, as date and time type, strings, other?
A sample of the data would help also.
>
> TIA,
>
> Rich
>
>
>
--
Adrian Klaver
adrian.klaver@gmail.com
