dblink_disconnect — closes a persistent connection to a remote database
dblink_disconnect() returns text dblink_disconnect(text connname) returns text
dblink_disconnect() closes a connection previously opened by dblink_connect(). The form with no arguments closes an unnamed connection.
connnameThe name of a named connection to be closed.
Returns status, which is always OK (since any error causes the function to throw an error instead of returning).
SELECT dblink_disconnect();
dblink_disconnect
-------------------
OK
(1 row)
SELECT dblink_disconnect('myconn');
dblink_disconnect
-------------------
OK
(1 row)