Re: Multidatabase query

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От Vibhor Kumar
Тема Re: Multidatabase query
Дата
Msg-id 49CD6805.9080706@enterprisedb.com
обсуждение исходный текст
Ответ на Multidatabase query  (Mauro Bertoli <bertoli.mauro@yahoo.it>)
Список pgsql-general
Hi Mauro,

Not possible in PostgreSQL.

However, you can use dblink for creating query between multidatabase as given below:

select empno from dblink('dbname=edb','SELECT empno from emp') as emp(empno numeric)
union
select empno from dblink('dbname=enterprisedb','SELECT empno from emp') as emp(empno numeric);

where edb and enterprisedb are database names

For More information about dblink, please follow the link given below:
http://www.postgresql.org/docs/current/static/dblink.html
http://www.enterprisedb.com/docs/en/8.3/oracompat/EnterpriseDB_OraCompat_EN_8.3-49.htm

Regards,
Vibhor Kumar
www.enterprisedb.com

Mauro Bertoli wrote:
Hi all,
is possible in PostgreSQL to create query between multidatabase like Sql Server 2005?

An example:
SELECT  db1.a.id FROM db1.a 
UNION db2.b.id FROM db2.b

Where "db1" is a database and "db2" is another database. "a" is a table in database "db1" and "b" is a table in database "db2"

Best regards,
Mauro



 

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