Re: How to get cursor query

On 08/18/2015 01:43 AM, Mikhail wrote:
> Hi,

> I have a long executing query via foreign data wrapper and on the remote
> server i can see that the query is fetching data from the cursor
>
> =# select application_name, state, query from pg_stat_activity where pid
> = 15455;
> application_name │ state │ query
> ──────────────────┼────────┼─────────────────────
> postgres_fdw │ active │ FETCH 100 FROM c514
>
> Is it possible to get query text corresponding to cursor c514?
>
> One of the solution is to turn statement logging on (found it here
> http://www.postgresql.org/message-id/1361CEF686657C41A139AD8C3145632B44B33A8F@E2010-MB1.manord.com),
> but it works if i turn statement logging on before query execution. What
> can i do in case of connection to the server after the statement was
> executed?

The only thing I can think to do is load pg_stat_statements:

http://www.postgresql.org/docs/9.4/interactive/pgstatstatements.html

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com