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CentOS 7.0 - man page for dblink_get_notify (centos section 3)

DBLINK_GET_NOTIFY(3)			    PostgreSQL 9.2.7 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
conname 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 9.2.7 2014-02-17 DBLINK_GET_NOTIFY(3)


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