postgresql杀进程

@H_502_0@SELECT pg_stat_get_backend_pid(s.backendid) AS procpid,
pg_stat_get_backend_activity(s.backendid) AS current_query
FROM (SELECT pg_stat_get_backend_idset() AS backendid) AS s;

@H_502_0@杀掉某个进程为: select pg_cancel_backend('2056')