UNLISTEN
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
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.