查看PostgreSQL正在执行的SQL

SELECT
procpid,
START,
now() - START AS lap,
current_query
FROM
(
SELECT
backendid,
pg_stat_get_backend_pid (S.backendid) AS procpid,
pg_stat_get_backend_activity_start (S.backendid) AS START,
pg_stat_get_backend_activity (S.backendid) AS current_query
FROM
(
SELECT
pg_stat_get_backend_idset () AS backendid
) AS S
) AS S
WHERE
current_query <> '<IDLE>'
ORDER BY
lap DESC;

procpid：进程id
start：进程开始时间
lap：经过时间
current_query：执行中的sql
怎样停止正在执行的sql
SELECT pg_cancel_backend(进程id);
或者用系统函数
kill -9 进程id;