dblink question about duplicate connection - Mailing list pgsql-admin

From francescoboccacci@libero.it
Subject dblink question about duplicate connection
Date
Msg-id 13669451.4531041312288568915.JavaMail.defaultUser@defaultHost
Whole thread Raw
Responses Re: dblink question about duplicate connection  (Joe Conway <mail@joeconway.com>)
List pgsql-admin
Dear all,
i have a question about dblink connection.I use it in a trigger function :


CREATE OR REPLACE FUNCTION setuser()
  RETURNS trigger AS
$BODY$

DECLARE

BEGIN
  IF (TG_OP = 'INSERT') THEN



     PERFORM dblink_connect('conn_test', 'dbname=database_test');



     PERFORM dblink_exec('conn_test','insert into users
      ......


Somentimes happend that an error accours in insert data and when i try to run
new insert posgresql return and error like duplicate connection.
I would like to change my functions in this way:

CREATE OR REPLACE FUNCTION setuser()
  RETURNS trigger AS
$BODY$

DECLARE

BEGIN
  IF (TG_OP = 'INSERT') THEN

     If 'conn_test' exist  PERFORM dblink_disconnect('conn_test');
     else

     PERFORM dblink_connect('conn_test', 'dbname=database_test');



     PERFORM dblink_exec('conn_test','insert into users



How can write my new function?

Thanks


Francesco Boccacci

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