NAME¶

dblink_get_notify - retrieve async notifications on a connection

SYNOPSIS¶

dblink_get_notify() returns setof (notify_name text, be_pid int, extra text)
dblink_get_notify(text connname) returns setof (notify_name text, be_pid int, extra text)

DESCRIPTION¶

dblink_get_notify retrieves notifications on either the unnamed connection, or on a named connection if specified. To receive notifications via dblink, LISTEN must first be issued, using dblink_exec. For details see LISTEN(7) and NOTIFY(7).

ARGUMENTS¶

connname

RETURN VALUE¶

Returns setof (notify_name text, be_pid int, extra text), or an empty set if none.

EXAMPLES¶

SELECT dblink_exec('LISTEN virtual');


 dblink_exec 
-------------


 LISTEN
(1 row)
SELECT * FROM dblink_get_notify();


 notify_name | be_pid | extra
-------------+--------+-------
(0 rows)
NOTIFY virtual;
NOTIFY
SELECT * FROM dblink_get_notify();


 notify_name | be_pid | extra
-------------+--------+-------


 virtual     |   1229 |
(1 row)