Re: help in writing query

From: "maria s" <psmg01(at)gmail(dot)com>
To: "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com>
Cc: pgsql-sql(at)postgresql(dot)org, "Ivan Sergio Borgonovo" <mail(at)webthatworks(dot)it>
Subject: Re: help in writing query
Date: 2008-06-10 15:19:07
Message-ID: d9d42a0f0806100819v51620082qfedc889c584197c4@mail.gmail.com
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Hi Pavel,
Thank you for your reply.

I tried the query and it is returning result as ,
for a single entry in sample info in separate rows

The result of the query as

1, prop1,value1
1,prop2,value2
2,prop1,value1
2 prop2,value2
2 prop3,value3

but i want the output as single row per sample id like

1,value1,value2
2 value1,value2,value3

Is this possible? or functions will help to get the result?

please help.

Thanks,
-maria

On Tue, Jun 10, 2008 at 11:03 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
wrote:

> Hello
>
> SELECT i.name, p.property_name, p.property_value
> FROM sample_info i
> JOIN
> sample_properties p
> ON i.id = p.id
>
> maybe
> Pavel
>
> 2008/6/10 maria s <psmg01(at)gmail(dot)com>:
> > Hello friends,
> > I need help in write a query.
> >
> > I have 2 tables, one is sample_info and sample_properties,
> >
> > sample_info (id integer, string name)
> > ------------------
> > 1, c_01
> > 2, c_02
> > ...
> >
> > sample_properties(sample_id integer(ref. sample_info), property_name
> string
> > ,property_value string )
> > -------------------------
> > 1, prop1, value1
> > 1, prop2, value2
> > 2, prop1, value1
> > 2, prop2, value 2
> > 2, prop3, value3
> >
> >
> > I would like to get the result by joining 2 tables, for sample id 1 from
> > sample_info, the result should be
> >
> > 1,c_01,value1,value2
> >
> > for sample 2
> >
> > 2, c_02,value1,value2,value3
> >
> > with property_value column header as property_name
> >
> > Can anyone help me to write a query /function/view to get the above
> output?
> >
> > Thank you so much for your help.
> >
> > -maria
> >
>

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