Acredito que o erro está na sua chamada da função dblink_exec:
SELECT * FROM dblink_exec('hostname=sys2ip dbname=testB user=postgres password=postgres','INSERT INTO emp NEW.*');
Pelo fato de você estar passando o NEW dentro de aspas, o postgres está entendendo que é uma string e não o identificador único NEW.
On Tue, Sep 1, 2009 at 6:15 AM, Venkat Godditi <venkatg.16@xxxxxxxxx> wrote:
HI,
I am having a problem with connection of two databases in different systems.Let me explain clearly.
I have one postgres 8.4 server running in my system and another postgres server running in
my friend system
My requirement is whenever ,I do some insertions in a table in my postgres server the same things should be replicated
in another postgres server.
These are the steps I followed
----------------------------------------------------------------------------------------------------
1.Creation of table in a database named "testA" in one system say "sys1"
CREATE TABLE emp
(
empname text NOT NULL,
salary integer
);
2.Creation of table in a database named "testB" in another system say "sys2"
CREATE TABLE emp
(
empname text NOT NULL,
salary integer
);
3.Creation of a Function and Trigger in database "testA" in "sys1"
CREATE OR REPLACE FUNCTION process_emp_audit() RETURNS TRIGGER AS $emp_audit$
BEGIN
IF (TG_OP = 'INSERT') THEN
SELECT * FROM dblink_exec('hostname=sys2ip dbname=testB user=postgres password=postgres','INSERT INTO emp NEW.*');
RETURN NEW;
END IF;
RETURN NULL;
END;
$emp_audit$ LANGUAGE plpgsql;
CREATE TRIGGER emp_audit
BEFORE INSERT ON emp
FOR EACH ROW EXECUTE PROCEDURE process_emp_audit();
4.The error I got is
ERROR: syntax error at or near "NEW"
CONTEXT: Error occurred on dblink connection named "unnamed": could not execute command.
SQL statement "SELECT * FROM dblink_exec('dbname=test9','INSERT INTO emp NEW.*')"
PL/pgSQL function "process_emp_audit" line 3 at SQL statement
********** Error **********
ERROR: syntax error at or near "NEW"
SQL state: 42601
Context: Error occurred on dblink connection named "unnamed": could not execute command.
SQL statement "SELECT * FROM dblink_exec('dbname=test9','INSERT INTO emp NEW.*')"
PL/pgSQL function "process_emp_audit" line 3 at SQL statement.
---------------------------------------------------------------------------------------------------------------------------
So,I request you for any kind of solution for this problem.
Thanks&Regards,
venkat.
