This page in other versions: 8.4 / 9.0 / 9.1 / 9.2 / 9.3  |  Development versions: devel  |  Unsupported versions: 8.3

F.9. dblink

Table of Contents
dblink_connect -- opens a persistent connection to a remote database
dblink_connect_u -- opens a persistent connection to a remote database, insecurely
dblink_disconnect -- closes a persistent connection to a remote database
dblink -- executes a query in a remote database
dblink_exec -- executes a command in a remote database
dblink_open -- opens a cursor in a remote database
dblink_fetch -- returns rows from an open cursor in a remote database
dblink_close -- closes a cursor in a remote database
dblink_get_connections -- returns the names of all open named dblink connections
dblink_error_message -- gets last error message on the named connection
dblink_send_query -- sends an async query to a remote database
dblink_is_busy -- checks if connection is busy with an async query
dblink_get_notify -- retrieve async notifications on a connection
dblink_get_result -- gets an async query result
dblink_cancel_query -- cancels any active query on the named connection
dblink_get_pkey -- returns the positions and field names of a relation's primary key fields
dblink_build_sql_insert --  builds an INSERT statement using a local tuple, replacing the primary key field values with alternative supplied values
dblink_build_sql_delete -- builds a DELETE statement using supplied values for primary key field values
dblink_build_sql_update -- builds an UPDATE statement using a local tuple, replacing the primary key field values with alternative supplied values

dblink is a module that supports connections to other PostgreSQL databases from within a database session.

See also postgres_fdw, which provides roughly the same functionality using a more modern and standards-compliant infrastructure.

Add Comment

Please use this form to add your own comments regarding your experience with particular features of PostgreSQL, clarifications of the documentation, or hints for other users. Please note, this is not a support forum, and your IP address will be logged. If you have a question or need help, please see the faq, try a mailing list, or join us on IRC. Note that submissions containing URLs or other keywords commonly found in 'spam' comments may be silently discarded. Please contact the webmaster if you think this is happening to you in error.

Proceed to the comment form.

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group