[prev in list] [next in list] [prev in thread] [next in thread] 

List:       postgresql-sql
Subject:    Re: [SQL] Using variables in select
From:       "Oliveiros d'Azevedo Cristina" <oliveiros.cristina () marktest ! pt>
Date:       2011-08-12 16:03:52
Message-ID: 96225C62740C45BB83267537E29E8712 () marktestcr ! marktest ! pt
[Download RAW message or body]

How do you access your database?
Through some client application like psql ? Through some other mean?

The query you included is the query you wanna perform against ur table?
Or was it just an example?

Do you wanna avoid having to write the complete query on the command line? 
If so, you sound like you need a function
something
like
CREATE FUNCTION customer_table(int) RETURNS customer_table
    AS $$ SELECT COUNT(DISTINCT costumer_id),AVG(price) FROM customer_table 
WHERE productid = $1 $$
    LANGUAGE SQL;
HTH

Best,
Oliveiros

----- Original Message ----- 
From: "tlund79" <thomas.lund@eniro.no>
To: <pgsql-sql@postgresql.org>
Sent: Friday, August 12, 2011 12:05 PM
Subject: [SQL] Using variables in select


> Hi,
>
> Firstly; I'm not a developer, but a business developer and statistics guy.
> This means that I'm happy using "basic" selects to gather information for
> analysis.
>
> One thing that could really efficiate my work is using variables, let's 
> say
> I have a table with different orders;
>
> |customer_id|productid|price|
>
> What I really want is to create a general query where I could easily
> substitute productid.
>
> //
>
> declare variable --> productid = 10
>
> select count(distinct customer_id), avg(price) from customer_table where
> productid=<insert variable>
>
> \\
>
> Is there a way of doing this without getting involved with heavy
> programming?
>
>
>
> Thank you and applogies if this is a ridicioulus question!
>
> --
> View this message in context: 
> http://postgresql.1045698.n5.nabble.com/Using-variables-in-select-tp4692865p4692865.html
> Sent from the PostgreSQL - sql mailing list archive at Nabble.com.
>
> -- 
> Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-sql 


-- 
Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-sql
[prev in list] [next in list] [prev in thread] [next in thread]