dblink_get_notify
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, usingdblink_exec. For details seeLISTEN andNOTIFY.
Arguments
connnameThe name of a named connection to get notifications on.
Return Value
Returnssetof (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;NOTIFYSELECT * FROM dblink_get_notify(); notify_name | be_pid | extra-------------+--------+------- virtual | 1229 |(1 row)