Обсуждение: Re: Retrieving current date

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Re: Retrieving current date

От
"sivapostgres@yahoo.com"
Дата:
Hello,
May be a very basic question.  We all here are new to Linux / PostgreSQL

Ubuntu Server 22.04
PostgreSQL 15
PgAdmin4 6.16

When I run the following query in pg_admin

Select today_now 
From   (Select localtimestamp(0) as today_now) a;

I get UTC time and not the IST time, which I expect.

How to change the setting(s), if any, to retrieve the current date and time in IST?

Happiness Always
BKR Sivaprakash

Re: Retrieving current date

От
Ron Johnson
Дата:
On Thu, Jun 19, 2025 at 2:23 AM sivapostgres@yahoo.com <sivapostgres@yahoo.com> wrote:
Hello,
May be a very basic question.  We all here are new to Linux / PostgreSQL

Ubuntu Server 22.04
PostgreSQL 15
PgAdmin4 6.16

When I run the following query in pg_admin

Select today_now 
From   (Select localtimestamp(0) as today_now) a;

I get UTC time and not the IST time, which I expect.

How to change the setting(s), if any, to retrieve the current date and time in IST?

In addition, see what time zone the Linux server is at:

$ timedatectl | grep zone
                Time zone: America/New_York (EDT, -0400)

--
Death to <Redacted>, and butter sauce.
Don't boil me, I'm still alive.
<Redacted> lobster!

Re: Retrieving current date

От
Adrian Klaver
Дата:
On 6/18/25 23:23, sivapostgres@yahoo.com wrote:
> Hello,
> May be a very basic question.  We all here are new to Linux / PostgreSQL
> 
> Ubuntu Server 22.04
> PostgreSQL 15
> PgAdmin4 6.16
> 
> When I run the following query in pg_admin
> 
> Select today_now
> From   (Select localtimestamp(0) as today_now) a;
> 
> I get UTC time and not the IST time, which I expect.
> 
> How to change the setting(s), if any, to retrieve the current date and 
> time in IST?

For setting see:

https://www.postgresql.org/docs/current/runtime-config-client.html

"TimeZone (string)

     Sets the time zone for displaying and interpreting time stamps. The 
built-in default is GMT, but that is typically overridden in 
postgresql.conf; initdb will install a setting there corresponding to 
its system environment. See Section 8.5.3 for more information.
"

For a quick fix, maybe?:

select localtimestamp(0) at time zone 'Asia/Kolkata' as today_now;

> 
> Happiness Always
> BKR Sivaprakash
> 

-- 
Adrian Klaver
adrian.klaver@aklaver.com

Re: Retrieving current date

От
"sivapostgres@yahoo.com"
Дата:
Thanks all,

I just changed the timezone setting in postgresql.conf file.  That resolved this issue.


On Thursday 19 June, 2025 at 07:41:16 pm IST, Adrian Klaver <adrian.klaver@aklaver.com> wrote:


On 6/18/25 23:23, sivapostgres@yahoo.com wrote:
> Hello,
> May be a very basic question.  We all here are new to Linux / PostgreSQL
>
> Ubuntu Server 22.04
> PostgreSQL 15
> PgAdmin4 6.16
>
> When I run the following query in pg_admin
>
> Select today_now
> From   (Select localtimestamp(0) as today_now) a;
>
> I get UTC time and not the IST time, which I expect.
>
> How to change the setting(s), if any, to retrieve the current date and
> time in IST?

For setting see:

https://www.postgresql.org/docs/current/runtime-config-client.html

"TimeZone (string)

    Sets the time zone for displaying and interpreting time stamps. The
built-in default is GMT, but that is typically overridden in
postgresql.conf; initdb will install a setting there corresponding to
its system environment. See Section 8.5.3 for more information.
"

For a quick fix, maybe?:

select localtimestamp(0) at time zone 'Asia/Kolkata' as today_now;


>
> Happiness Always
> BKR Sivaprakash

>

--
Adrian Klaver
adrian.klaver@aklaver.com