Re: Joining 2 Tables

From: Stephane Faroult <sfaroult_at_oriole.com>
Date: Sun, 30 Dec 2001 17:02:33 -0800
Message-ID: <F001.003E4570.20011230163020@fatcity.com>

Pete Wang wrote:
>
> Hi all,
>
> I have been trying to get this right but to no avail.
>
> I have the following tables
>
> Table 1: Actual
>
> Pid, ccid, act
> 1, 11011102, 798.88
> 2, 11011102, 666.79
>
> Table 2: Budget
> Pid, ccid, act
> 1, 11011102, 672.02
> 2, 11011102, 40.30
>
> I need to write an SQL to get the following result in one row for each ccid
> value that may appear in any of/both the tables:
>
> ccid, sum(act), sum(bud)
> 11011102, 1465.67, 712.32
>
> But the best I can get is:
>
> 1 select a.ccid, sum(a.act)
> 2 from actual a
> 3 where
> 4 a.ccid = 1011102
> 5 group by a.ccid
> 6 union
> 7 select b.ccid, sum(b.bud)
> 8 from budget b
> 9 where
> 10 b.ccid = 1011102
> 11* group by b.ccid
> SQL> /
>
> CCID SUM(A.ACT)
> ---------- ----------
> 1011102 712.32
> 1011102 1465.67
>
> Any idea how the sql should be written?
>
> Would greatly appreciate any advice.
>
> Cheers!
>
> Pete
>

Something which would not be too far from what you have come to might be

select x.ccid, sum(x.act), sum(x.bud)
from (select a.ccid, sum(a.act) act, 0 bud

      from actual a
      group by a.ccid
      union
      select b.ccid, 0, sum(b.bud)
      from budget b
      group by b.ccid) x

group by x.ccid;

-- 
Regards,

Stephane Faroult
Oriole Ltd
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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Received on Sun Dec 30 2001 - 19:02:33 CST