\o /dev/null
call gs_create_log_tables();
explain (analyze on)  select filename,logtime,msg from gs_pg_log_ft;
explain (analyze on,format json)  select filename,logtime,msg from gs_pg_log_ft;
explain (analyze on ,detail on,format json)  select filename,logtime,msg from gs_pg_log_ft;
set explain_perf_mode='pretty';
explain (analyze on,format text)  select filename,logtime,msg from gs_pg_log_ft;
explain (analyze on ,detail on,format text)  select filename,logtime,msg from gs_pg_log_ft;