UNLISTEN
SQL - Language Statements
UNLISTEN
stop listening for a notification
UNLISTEN
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.
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