查看任務sql語句：
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;
其中
procpid：進程id
start：進程開始時間
lap：經(jīng)過時間
current_query：執(zhí)行中的sql
強制停止某一個任務：
SELECT pg_cancel_backend(進程id);
補充：
SELECT pid, datname AS db, query_start AS start, now() - query_start AS lap, query FROM pg_stat_activity WHERE state > 'idle' and query not like '%pg_stat_activity%' and (now() - query_start) > interval '10 seconds';
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