Re: join problem - Mailing list pgsql-sql

From Ragnar
Subject Re: join problem
Date
Msg-id 1182451380.5953.232.camel@localhost.localdomain
Whole thread Raw
In response to join problem  ("A. R. Van Hook" <hook@lake-lotawana.mo.us>)
Responses Re: join problem
List pgsql-sql
On fim, 2007-06-21 at 08:46 -0500, A. R. Van Hook wrote:
> if I query for the total deposit using
>    select sum(deposit)
>    from invoice
>    where cusid = 2128"
> 
> I also get 1179.24, also the correct amount
> 
> 
> If I try an inclusive query using the following:
>      select
>       sum(i.rowtot + i.tax) as tot,
>       sum(v.deposit) as deposit
>     from cai c
>     join invoice           v on (v.cusid = c.cusid)
>     left join invoiceitems i on (v.ivid = i.ivid)
>     where v.cusid = 2128
>     group by 
>       c.cusid
> I get
>     tot    | deposit
> ----------+---------
>  1179.240 | 2819.24

you are adding the invoice deposit once for each item

gnari




pgsql-sql by date:

Previous
From: Masaru Sugawara
Date:
Subject: Re: Subquery problems
Next
From: "Fernando Hevia"
Date:
Subject: Re: Constraint exclusion