Avoid Repating values using SQL

Hi team,
I have this issue here which i am finding difficult to handle it, after my stint with SAP,
Case1
Col1         col2          col3         Qty
97812799     65021329     45019836     48492
85001060     65021329     45019836     48492
*Now i want that QTY column should only have single value i.e. 48492, either in first row or 2nd row doesnt matter, but we have have only one value*
_expected result_
Col1          col2         col3         Qty
97812799     65021329     45019836     48492
85001060     65021329     45019836
Case 2
Col1          col2          col3         Qty
85001133     65021369     45019878     76169
85001132     65021369     45019878     76169
97813988     65021369     45019878     76169
97813003     65021369     45019878 76169
Expected result
Col1          col2         col3         Qty
85001133     65021369     45019878     76169 --> could be anywhere in the record list, but need to have only 1 value
85001132     65021369     45019878
97813988     65021369     45019878
97813003     65021369     45019878
plz assist me here, or give me hints i would try my self,
Kind regardsEdited by: Nicloei W on Apr 14, 2010 6:38 PM

The column with the distinct values will be always the same (col1)?
If so, could be this:
Connected to Oracle Database 11g Enterprise Edition Release 11.1.0.6.0
Connected as fsitja
SQL>
SQL> with t as (
2 select 85001133 col1, 65021369 col2, 45019878 col3, 76169 qty from dual union all
3 select 85001132, 65021369, 45019878, 76169 from dual union all
4 select 97813988, 65021369, 45019878, 76169 from dual union all
5 select 97813003, 65021369, 45019878, 76169 from dual union all
6 select 97812799, 65021329, 45019836, 48492 from dual union all
7 select 85001060, 65021329, 45019836, 48492 from dual
8 )
9 -- end of sample data
10 SELECT col1, col2, col3, decode(rn, 1, qty) qty
11    FROM (SELECT col1, col2, col3, qty, row_number() over(PARTITION BY col2, col3 ORDER BY col1) rn FROM t)
12   ORDER BY col2, col3, col1;
      COL1       COL2       COL3        QTY
85001060   65021329   45019836      48492
97812799   65021329   45019836
85001132   65021369   45019878      76169
85001133   65021369   45019878
97813003   65021369   45019878
97813988   65021369   45019878
6 rows selected
SQL>

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