UNLISTEN(7) PostgreSQL 9.4.15 Documentation UNLISTEN(7)
NAME
UNLISTEN - stop listening for a notification
SYNOPSIS
UNLISTEN { channel | * }
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 channel named channel. The
special wildcard * cancels all listener registrations for the current
session.
NOTIFY(7) contains a more extensive discussion of the use of LISTEN and
NOTIFY.
PARAMETERS
channel
Name of a notification channel (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.
A transaction that has executed UNLISTEN cannot be prepared for
two-phase commit.
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 messages 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(7), NOTIFY(7)
PostgreSQL 9.4.15 2017 UNLISTEN(7)
PostgreSQL 9.4.15 - Generated Tue Nov 28 17:54:57 CST 2017