DBLINK_GET_NOTIFY(3)              PostgreSQL 12.3 Documentation              DBLINK_GET_NOTIFY(3)



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
           The name of a named connection to get notifications on.

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)



PostgreSQL 12.3                                2020                          DBLINK_GET_NOTIFY(3)