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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 registration 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(1,2,7) registrations for this session are cleared.

NOTES
       You  may  unlisten  something you were not listening for; no warning or
       error(8,n) will appear.

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

EXAMPLES
       To make a registration:

       LISTEN virtual(5,8);
       NOTIFY virtual(5,8);
       Asynchronous notification "virtual(5,8)" received from server process with PID 8448.


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

       UNLISTEN virtual(5,8);
       NOTIFY virtual(5,8);
       -- no NOTIFY event is received


COMPATIBILITY
       There is no UNLISTEN command in(1,8) the SQL standard.

SEE ALSO
       LISTEN [listen(1,2,7)(7)], NOTIFY [notify(l)]




SQL - Language Statements         2003-11-02                       UNLISTEN(7)