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Query to select some combination of records.

 
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rajesh_manas

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Joined: 30 Mar 2006
Posts: 11

PostPosted: Wed Jan 03, 2007 7:40 pm    Post subject: Query to select some combination of records.
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Dear All,

I have to select some combination of rows from the table as follows


Lets say, Column A is of Char(6) and Column B is of Char(12) in a table TAB1.

The records in the table is as follows..

Table : TAB1

A B
- -
102345 123456789100
102345 123456789100
102345 123456789101
102345 123456789101
102321 123456789123
102322 123456789124
102343 123456789125
102344 123456789126
102344 123456789127
102347 123456789128


From the above table, I need the list of rows where Column A is having more than one unique column B value

I mean the query should result as below

Output:

102345 123456789100
102345 123456789100
102345 123456789101
102345 123456789101

102344 123456789126
102344 123456789127


Since 102345 and 102344 has more than one unique value in Column B.

Please kindly let me know the query if available.

Thanks in advance

Regards.
Rajesh
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DavidatK

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Joined: 22 Nov 2005
Posts: 700
Location: Troy, Michigan USA

PostPosted: Thu Jan 04, 2007 2:00 am    Post subject: Re: Query to select some combination of records.
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Code:

SELECT A, B                                 
  FROM DB2.TAB1                           TT1         
 WHERE EXISTS                               
       (SELECT COUNT(DISTINCT B)           
          FROM DB2.TAB1                   TT2     
         WHERE TT2.A = TT1.A               
        HAVING COUNT(DISTINCT B) > 1       
        )                                   
;
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