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 Post-
       greSQL 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					    2010-05-14							       UNLISTEN(7)