log
Selects one of the available log-formats. These can support popular log analyzers like pgbadger, pganalyze, etc. Supported values are: pid=%p,user=%u,db=%d,app=%a,client=%h, %m [%p] %q[user=%u,db=%d,app=%a], %t [%p]: [%l-1] user=%u,db=%d,app=%a,client=%h.