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

    Note

    The following description applies only to Postgres-XC

dblink module has not been tested with Postges-XC yet. Although there're no reason that dblink does not run in Postgres-XC, the development team leaves the test and the use of this module entirely to users.

This section is identical to the corresponding PostgreSQL reference manual.

    Note

    The following description applies only to PostgreSQL

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

    Note

    The following description applies only to Postgres-XC

dblink module has not been tested with Postges-XC yet. Although there're no reason that dblink does not run in Postgres-XC, the development team leaves the test and the use of this module entirely to users.

This section is identical to the corresponding PostgreSQL reference manual.

    Note

    The following description applies only to PostgreSQL

conname
    The name of a named connection to get notifications on.

RETURN VALUE

    Note

    The following description applies only to Postgres-XC

dblink module has not been tested with Postges-XC yet. Although there're no reason that dblink does not run in Postgres-XC, the development team leaves the test and the use of this module entirely to users.

This section is identical to the corresponding PostgreSQL reference manual.

    Note

    The following description applies only to PostgreSQL

Returns setof (notify_name text, be_pid int, extra text), or an empty set if none.

EXAMPLES

    Note

    The following description applies only to Postgres-XC

dblink module has not been tested with Postges-XC yet. Although there're no reason that dblink does not run in Postgres-XC, the development team leaves the test and the use of this module entirely to users.

This section is identical to the corresponding PostgreSQL reference manual.

    Note

    The following description applies only to PostgreSQL

    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)