SELECT * FROM pg stat activity;

 SELECT * FROM pg_stat_activity;
SELECT * FROM pg_stat_activity WHERE datname = 'dbname';
SELECT * FROM pg_stat_activity WHERE datname = 'dbname' and state = 'active';
SELECT usename, application_name, client_addr, client_hostname, state FROM pg_stat_activity;
SELECT pg_terminate_backend(__pid__) from pg_stat_activity;

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