/usr/man2/cat.l/unlisten.l.Z(/usr/man2/cat.l/unlisten.l.Z)

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(l)] 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  may  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(l)], NOTIFY [notify(l)]

SQL - Language Statements         2005-11-05                        UNLISTEN()