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unlisten
Langue: en
Version: 2010-07-20 (ubuntu - 25/10/10)
Section: 7 (Divers)
NAME
UNLISTEN - stop listening for a notificationSYNOPSIS
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 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)]Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre