dblink_connect(text connstr) returns text dblink_connect(text connname, text connstr) returns text
dblink_connect() establishes a
connection to a remote PostgreSQL database. The server and database
to be contacted are identified through a standard libpq connection string. Optionally, a name
can be assigned to the connection. Multiple named connections can
be open at once, but only one unnamed connection is permitted at
a time. The connection will persist until closed or until the
database session is ended.
The name to use for this connection; if omitted, an unnamed connection is opened, replacing any existing unnamed connection.
info string, for example hostaddr=127.0.0.1 port=5432 dbname=mydb
user=postgres password=mypasswd. For details see
PQconnectdb in Section 30.1.
Returns status, which is always OK (since any error causes the function to throw an error instead of returning).
Only superusers may use
dblink_connect to create
non-password-authenticated connections. If non-superusers need
this capability, use
It is unwise to choose connection names that contain equal signs, as this opens a risk of confusion with connection info strings in other dblink functions.
select dblink_connect('dbname=postgres'); dblink_connect ---------------- OK (1 row) select dblink_connect('myconn', 'dbname=postgres'); dblink_connect ---------------- OK (1 row)