Обсуждение: Query
Hi,<br /><br />As a part of my university project, I am trying to modify the postgres code to support parallel system. <br/><br />As the first step I have partitioned the data on different processors. And have kept a master node to processall the query requests. Whenever my master node is queried I need to push my query onto the backend processors. Forthis I need a way of connect to different backends via my master node's backend. <br /><br />I have tried different functionslike:<br />do_connect<br />SendQuery<br />PQconnectdb<br />etc. <br /><br />But all of them give the same compilationerror of not being able to find the reference to the functions. Now if I include command.o and common.o presentin src/bin/psql, I get the error of not referencing other functions.<br /><br />I there a way of accessing other backendsthrough the master backend.<br /><br />Thanks & Regards,<br />Shaunak Godbole <br clear="all" /><br />-- <br/>It is not the aptitude but the attitude that decides a persons altitude<br />Shaunak Godbole<br />Senior Undergraduate<br/>Computer Science Dept.<br />IIT Powai, Mumbai 400076<br />Ph no: +91 98695 41960
"Shaunak Godbole" <shaunak.godbole@gmail.com> writes:
> I there a way of accessing other backends through the master backend.
It seems you're trying to reinvent contrib/dblink.
regards, tom lane
Ühel kenal päeval, E, 2007-04-09 kell 10:56, kirjutas Tom Lane: > "Shaunak Godbole" <shaunak.godbole@gmail.com> writes: > > I there a way of accessing other backends through the master backend. > > It seems you're trying to reinvent contrib/dblink. Or you may want to use pl/proxy ( https://developer.skype.com/SkypeGarage/DbProjects/PlProxy ) which can be used for data partitioning between different hosts/backends if the interface to data is postgresql functions. > regards, tom lane > > ---------------------------(end of broadcast)--------------------------- > TIP 7: You can help support the PostgreSQL project by donating at > > http://www.postgresql.org/about/donate -- ---------------- Hannu Krosing Database Architect Skype Technologies OÜ Akadeemia tee 21 F, Tallinn, 12618, Estonia Skype me: callto:hkrosing Get Skype for free: http://www.skype.com
Hi, As a part of my university project, I am trying to modify the postgres code to support parallel system. As the first step I have partitioned the data on different processors. And have kept a master node to process all the query requests. Whenever my master node is queried I need to push my query onto the backend processors. For this I need a way of connect to different backends via my master node's backend. I have tried different functions like: do_connect SendQuery PQconnectdb etc. But all of them give the same compilation error of not being able to find the reference to the functions. Now if I include command.o and common.opresent in src/bin/psql, I get the error of not referencing other functions. I there a way of accessing other backends through the master backend. Thanks & Regards, Shaunak Godbole dblink is written specially for remote database access and is efficiently written for postgresql and is also having async query capabilities, u may check dblink_connect, dblink_fetch, dblink_exec, dblink_send_query, etc ..... more than that it is also having replication mechanism which u can achieve using dblink_build_sql_insert, dblink_build_sql_delete, dblink_build_sql_update which i think would be of utmost help if there is some replication requirement in ur parallel database system regards nags IIT Bombay -- View this message in context: http://www.nabble.com/Query-tf3547482.html#a9954956 Sent from the PostgreSQL - hackers mailing list archive at Nabble.com.