2018-05-10 12:42 GMT+02:00 a <372660...@qq.com>: > Thanks a lot, would you please be so kind to tell me more about what is top > level query?? >
for example - if you run some queries from PLpgSQL functions (triggers), then these queries are not top queries. Regards Pavel > > > ------------------ Original message ------------------ > *From:* "Pavel Stehule"; > *Sendtime:* Thursday, May 10, 2018 6:38 PM > *To:* "a"<372660...@qq.com>; > *Cc:* "pgsql-general"; > *Subject:* Re: How do I get the SQL statement in a trigger? > > Hi > > 2018-05-10 12:23 GMT+02:00 a <372660...@qq.com>: > >> Hi I would like to write a trigger that recorded every sql statement >> under the effected entry. So if it is possible to retrieve the sql >> statement within a trigger?? >> > > You can read a tom command from pg_stat_activity table > > postgres=# select query from pg_stat_activity where pid = > pg_backend_pid(); > +------------------------------------------------------------------+ > | query | > +------------------------------------------------------------------+ > | select query from pg_stat_activity where pid = pg_backend_pid(); | > +------------------------------------------------------------------+ > (1 row) > > But this information is available only for top level query. > > Regards > > Pavel > >
