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Difference Between Pg_Cancel_Backend() And Pg_Terminate_Backend() In Postgresql

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pg_cancel_backend():-
                            Cancels the running query ,Cancel a backend's current query

pg_terminate_backend():-
                            Terminates the entire process and thus the database connection,terminate a backend A connection which is idle or idle in transaction does not have a current query to cancel, but it has a backend process which can be terminated.

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