Re: How to pass arguments in postgres to sql scripts.

Hi Kunwar,

You can check -v option of psql, 4th paragraph and \set command in
"Meta-Commads" section, and "Variables" subsection under "Advanced
Features".

https://www.postgresql.org/docs/16/app-psql.html
https://www.postgresql.org/docs/16/app-psql.html#APP-PSQL-VARIABLES

Best regards.
Samed YILDIRIM

On Sat, 27 Apr 2024, 16:03 kunwar singh, <krishsingh(dot)111(at)gmail(dot)com> wrote:

> Hi friends, Question: How to pass arguments in postgres to sql scripts.
> Context. When I am monitoring my production Oracle databases I have a lot
> of simple sql scripts (which require one or more arguments) which make my
> monitoring/troubleshooting life simpler. How can I achieve the same in
> postgres? We are migrating our Oracle databases to Postgres and I am
> modifying my scripts to do the same in Postgres.
>
> Oracle
> ======
> cat appjobcheck.sql
>
> SELECT
> SID,
> SYS_CONTEXT.GET_CURRENT_SCHEMA() AS "SCHEMA", -- Similar to datname
> USERNAME,
> PROGRAM AS "APPLICATION_NAME",
> STATUS,
> SQL_ID, -- Use V$SQL to get full query text based on SQL_ID
> LOGON_TIME AS "BACKEND_START",
> SQL_EXEC_START AS "QUERY_START",
> FROM
> V$SESSION
> WHERE
> STATUS = 'ACTIVE' -- Filter to active sessions
> AND TYPE != 'BACKGROUND'; -- Exclude background processes
> AND program='&1';
>
> The way to invoke from sqlplus is .
>
> SQL> @appjobcheck batchprocessapp1 ---- batchprocessapp1 is what I want
> to monitor
>
>
> Postgres
> ==========
> cat appjobcheck.sql
>
> SELECT
> pid,
> datname,
> usename,
> application_name,
> state,
> query,
> backend_start,
> query_start
> FROM pg_stat_activity where application_name='&1';
>
> The way I am trying invoke from postgres is .
>
>
> postgres=> \i appjobcheck.sql batchprocessapp1 ---- batchprocessapp1 is
> what I want to monitor
> pid | datname | usename | application_name | state | query |
> backend_start | query_start
>
> -----+---------+---------+------------------+-------+-------+---------------+-------------
> (0 rows)
>
> \i: extra argument "batchprocessapp1" ignored
>
> --
> Cheers,
> Kunwar
>