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 and NOTIFY.

# 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