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How to assign values to the last row when more than one row having same values?

Posted By:      Posted Date: October 18, 2010    Points: 0   Category :Sql Server
 
i have a table named numTable , contains value

column1        column2

one              10
two              10
three           20
four             20
five             20


i want a query to bring the result as

column1        column2

one              0
two              10
three            0
four              0
five              20

ie if more than one row has same column2 values, the value should assign to the last row of the rows containing the
same column2 values with rest are modified to 0.

Thanks.


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