Re: Get the difference between two timestamp cells but in a special format in PostgreSQL

(But don't use my format string, it's very wrong!)

On Thu, Jun 25, 2015 at 3:20 PM, Colin Lieberman <clieberman(at)turnitin(dot)com>
wrote:

> You may be looking for to_char:
>
> # select to_char( now() - '2015-06-25', 'YYYY-MM-DD HH24:mm:ss' );
>
> to_char
> ---------------------
> 0000-00-00 15:00:43
> (1 row)
>
> http://www.postgresql.org/docs/9.4/static/functions-formatting.html
>
> On Wed, Jun 24, 2015 at 9:11 PM, litu16 <litumelendez(at)gmail(dot)com> wrote:
>
>> This is my table...
>>
>> <http://postgresql.nabble.com/file/n5855074/screenshot.jpg>
>>
>> I would like to get the time difference between 'time_type = Lap' AND
>> 'time_type = Start' in order to fill 'time_elapse'. Im almost sure that
>> this
>> code works...
>>
>> * CREATE OR REPLACE FUNCTION timediff()
>> RETURNS trigger AS
>> $BODY$
>> DECLARE
>> t_ix real;
>>
>> BEGIN
>> IF NEW.time_type = 'Lap' THEN
>> SELECT t.time FROM table_ebscb_spa_log04 t WHERE t.fn_name =
>> NEW.fn_name AND t.time_type = 'Start' ORDER BY t.stmtserial DESC LIMIT 1
>> INTO t_ix;
>> IF NOT FOUND THEN
>> RAISE EXCEPTION USING MESSAGE = 'There is not any previous
>> row...';
>> ELSE
>> NEW.time_elapse := t_ix - NEW.time;
>> END IF;
>> END IF;
>> return NEW;
>> END
>> $BODY$
>> LANGUAGE plpgsql VOLATILE*
>>
>> But I don't know how to get the time difference between the two timestamps
>> cells in a special format: (years/months/days
>> hours:minutes:seconds:miliseconds) like this...
>>
>> * 0y/0m/0d 00:00:01.001*
>>
>> Is this possible??
>> Thanks Advanced.
>>
>>
>>
>> --
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>>
>>
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>
>