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UNLISTEN(7)                      SQL Commands                      UNLISTEN(7)



NAME
       UNLISTEN - stop listening for a notification


SYNOPSIS
       UNLISTEN { name | * }


DESCRIPTION
       UNLISTEN is used to remove an existing registration for NOTIFY events.  UNLISTEN cancels any existing registra-
       tion of the current PostgreSQL session as a listener on the notification name. The special wildcard  *  cancels
       all listener registrations for the current session.

       NOTIFY [notify(7)] contains a more extensive discussion of the use of LISTEN and NOTIFY.

PARAMETERS
       name   Name of a notification (any identifier).

       *      All current listen registrations for this session are cleared.

NOTES
       You can unlisten something you were not listening for; no warning or error will appear.

       At the end of each session, UNLISTEN * is automatically executed.

EXAMPLES
       To make a registration:

       LISTEN virtual;
       NOTIFY virtual;
       Asynchronous notification "virtual" received from server process with PID 8448.


       Once UNLISTEN has been executed, further NOTIFY commands will be ignored:

       UNLISTEN virtual;
       NOTIFY virtual;
       -- no NOTIFY event is received


COMPATIBILITY
       There is no UNLISTEN command in the SQL standard.

SEE ALSO
       LISTEN [listen(7)], NOTIFY [notify(7)]



SQL - Language Statements         2014-02-17                       UNLISTEN(7)