Message-ID: <gh-pgjdbc-pgjdbc-3166-c2009478743@github.com>
From: "davecramer (@davecramer)" <noreply+davecramer@github.com>
To: "pgjdbc/pgjdbc" <noreply+pgjdbc-pgjdbc@github.com>
Date: Wed, 20 Mar 2024 12:42:32 +0000
Subject: Re: [pgjdbc/pgjdbc] issue #3166: query_id in pg_stat_activity is NULL when connecting from JDBC, but not from psql
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References: <gh-pgjdbc-pgjdbc-3166@github.com>
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Ok, so here's what is happening. The driver uses Extended Protocol so normally it does 
```
2024-03-20 07:50:31.785 EDT [12162] LOG:  duration: 2.311 ms  parse <unnamed>: select query_id, pid, query, version() from pg_stat_activity where pid = pg_backend_pid()
2024-03-20 07:50:31.787 EDT [12162] LOG:  duration: 2.062 ms  bind <unnamed>: select query_id, pid, query, version() from pg_stat_activity where pid = pg_backend_pid()
2024-03-20 07:50:31.792 EDT [12162] LOG:  duration: 0.552 ms  execute <unnamed>: select query_id, pid, query, version() from pg_stat_activity where pid = pg_backend_pid()
```
And apparently query_id is not calculated for that.

Add `PGProperty.PREFER_QUERY_MODE.set(props, "simple");` to your code and it works fine.

Dave