Question

SQL Compute Sum with Over Partition by

Asked by: mkhan900

My select statement looks something like below and I have to use Over Partition by with Rownum as there are duplicates with a_id.
When I try to do a COMPUTE SUM on Cost column it also considers duplicate values from a_id

Is there any way I can avoid duplicates in COMPUTE SUM

BREAK ON a_id dup-
      ON cat DUP -
      ON description DUP -
      ON l dup -
      ON t dup -
      ON s dup -
      ON cost -
      ON c -
      ON y -
      ON l -
      ON n -
      ON s -
      ON REPORT
COL l       FORMAT 999
COL cost       FORMAT 999,999,999,999.99
COL c FORMAT 999,999,999,999.99
COL y        FORMAT 999,999,999,999.99
COL l       FORMAT 999,999,999,999.99
COL n   FORMAT 999,999,999,999.99
COL s    FORMAT 999,999,999,999.99
 
compute sum of cost on report FORMAT 999,999,999,999.99
 
SELECT a1.cat,
       a1.description,
       a1.a_id,
       a1.l,
       a1.t,
       a1.s,
       a1.cost,
       a1.c,
       a1.y,
       a1.l,
       a1.n,
       a1.s,
       a1.v,
       a1.lc
FROM (SELECT cat,
             a_id,
             description,
             TO_CHAR (dated, 'MM/DD/YYYY') a,
             l,
             t,
             s,
             dd.cost,
             ROW_NUMBER ()
                OVER (PARTITION BY aid ORDER BY dd.cost DESC)
             cnt,
             c,
             y,
             l,
             n,
             s,
             v,
             lc
      FROM listoftables) a1
WHERE a1.cnt = 1 
ORDER BY 1, 2, 3;

                                  
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Asked On
2009-08-02 at 04:23:16ID24619705
Tags

PL / SQL

Topics

SQL Query Syntax

,

PL / SQL

Participating Experts
1
Points
500
Comments
5

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Answers

 

by: angelIIIPosted on 2009-08-02 at 04:24:34ID: 24998474

you have to group by in a subselect first, so you don't have the "duplicates" when doing the SUM() ..

 

by: mkhan900Posted on 2009-08-02 at 04:55:46ID: 24998556

angellll,

I have missed to include the GROUP BY statement while editing the SELECT to post it here.

But I do have the GROUP BY in inner select and the SUM I refer to is used with COMPUTE, not with the Select statement

 

by: angelIIIPosted on 2009-08-02 at 09:10:49ID: 24999256

I am not sure I follow, as I don't see a group by? ...
I see a subselect with ROW_NUMBER(), and the other query filtering on r = 1 ...

can you post some sample data?

 

by: mkhan900Posted on 2009-08-02 at 17:26:16ID: 25001271

BREAK ON a_id dup-
      ON cat DUP -
      ON description DUP -
      ON l dup -
      ON t dup -
      ON s dup -
      ON cost -
      ON c -
      ON y -
      ON l -
      ON n -
      ON s -
      ON REPORT
COL l       FORMAT 999
COL cost       FORMAT 999,999,999,999.99
COL c FORMAT 999,999,999,999.99
COL y        FORMAT 999,999,999,999.99
COL l       FORMAT 999,999,999,999.99
COL n   FORMAT 999,999,999,999.99
COL s    FORMAT 999,999,999,999.99
 
compute sum of cost on report FORMAT 999,999,999,999.99
 
SELECT a1.cat,
       a1.description,
       a1.a_id,
       a1.l,
       a1.t,
       a1.s,
       a1.cost,
       a1.c,
       a1.y,
       a1.l,
       a1.n,
       a1.s,
       a1.v,
       a1.lc
FROM (SELECT cat,
             a_id,
             description,
             TO_CHAR (dated, 'MM/DD/YYYY') a,
             l,
             t,
             s,
             dd.cost,
             ROW_NUMBER ()
                OVER (PARTITION BY aid ORDER BY dd.cost DESC)
             cnt,
             c,
             y,
             l,
             n,
             s,
             v,
             lc
      FROM listoftables) a1
WHERE a1.cnt = 1
group by
cat,a_id,description,dated,l,t,s,
             dd.cost,c,y,l,n,s, v,lc
ORDER BY 1, 2, 3;

Data in DB - tables

a_id    Cost

1        4000
1        4000
2        2000
2        2000
3        3000

Since I have a ROWNUM=1 on a_id it only returns

a_id            Cost
1               4000
2               2000
3               3000

When I do a compute sum of cost on report FORMAT 999,999,999,999.99 I want the program to return SUM based on the output of my query
which would be 9000, instead its doing a sum on the table data and returning 15000

Thanks for your help

 

 

by: angelIIIPosted on 2009-08-03 at 01:08:31ID: 25002514

I see.
well, could you try a group by WITH ROLLUP or WITH CUBE?
you might need to change the GROUP BY to only group by the a_id, and put all the other fields into max(field) expression in the select, which should result in the same as you do a group by on a_id which is the key...

20120131-EE-VQP-002

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