Wiki / Functions
pg_cancel_backend
Cancels the current query of the session whose backend process has the specified process ID. This is also allowed if the calling role is a member of the role whose backend is being canceled or the calling role has privileges of pg_signal_backend, however only superusers can cancel superuser backends. As an exception, roles with privileges of pg_signal_autovacuum_worker are permitted to cancel autovacuum worker processes, which are otherwise considered superuser backends.
English manual coverage begins with PostgreSQL 7.1. Source history and runtime observations have their own recorded version boundaries.
Reading PG 18·Select a recorded version
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