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Date: Sun, 19 Oct 2025 07:56:57 -0700
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Subject: Re: Convert date and time colums to datetime
From: Adrian Klaver <adrian.klaver@aklaver.com>
To: Rich Shepard <rshepard@appl-ecosys.com>, pgsql-general@postgresql.org
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 <6b30ebac-6d6d-4c26-be73-de67e208e4e1@aklaver.com>
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On 10/19/25 07:53, Adrian Klaver wrote:
> On 10/19/25 07:43, Rich Shepard wrote:
>> The database has a table with separate date and time columns.
>>
>> 1. Are there benefits to merging the two into a single timestamp column?
> 
> 1) One less column to fetch from.
> 
> 2) If you really need a timestamp the work is already done, instead of 
> building on the fly.
> 
>>
>> 2. If so, how would I do this? (Reading date/time operators and functions
>> doc page hasn't shown me one.)
> 
> select ('10/19/2025'::date + '07:50'::time)::timestamptz;
> 
> timestamptz
> ------------------------
>   2025-10-19 07:50:00-07

Should have added in previous post, the above assumes your current date 
and time values are from the server timezone.

> 
>>
>> TIA,
>>
>> Rich
>>
>>
>>
> 
> 


-- 
Adrian Klaver
adrian.klaver@aklaver.com