Re: Automating Partitions in PostgreSQL - Query on syntax

2009/4/21 Dickson S. Guedes <listas(at)guedesoft(dot)net>

> Em Ter, 2009-04-21 às 17:20 +0530, Kedar Potdar escreveu:
> > Hi ,
> >
> > We are working on a patch to automate partitioning in PostgreSQL.
>
> Nice. ":)
>
> > For Range partitions, we have proposed the syntax which is as
> > follows
> >
> > (...)
> > PARTITION BY RANGE (emp_id)
> > (
> > emp_500 (START 1 END 500),
> > emp_1500 (START 500 END 1500),
> > emp_4000 (START 1520 END 4000)
> > );
>
> What if I need more columns to set the partitions?

You can do so by using command like this,

CREATE TABLE emp (
emp_id int not null primary key,
designation text not null,
location varchar(50) not null,
jdate date not null,
ctc float not null

)
PARTITION BY RANGE (jdate, emp_id)
(
emp_500 (START '01-01-1980',1 END '01-01-1990',500),
emp_1500(START '01-01-1990',500 END '01-01-2000',1500+10),
emp_4000 (START '1 Jan 2000',1500+20 END 'Jan 1, 2010', 4000-50)
);

You can have multiple columns as partition key attributes and values for
these attributes should appear in the order specified.

>
>
> []s
> --
> Dickson S. Guedes
> mail/xmpp: guedes(at)guedesoft(dot)net - skype: guediz
> http://guedesoft.net - http://planeta.postgresql.org.br
>