Adding Rownum based on key in Colunmn!

VIGNRSH · Posted: Mon Feb 16, 2009 12:32 pm

Hi,
I have been asked by my deployment team to write a query for this requirement.
sample I/P table:
Col1: col2:
aaaa1111 value1
aaaa1111 value2
aaaa1222 value1
aaaa1333 value1
aaaa1333 value2
aaaa1333 value3
aaaa1333 value4

Here as observed the COL1 has duplicate values and the O/P format they require is:
Row COL1 COL2
1 aaaa1111 value1
2 aaaa1111 value2
1 aaaa1222 value1
1 aaaa1333 value1
2 aaaa1333 value2
3 aaaa1333 value3
4 aaaa1333 value4

I.e They want the row number column to change in correpsondence with the COL1 and restart the value if the COL1 value changes.

I tried them contacting for the exact requirement, and they are yet to provide any inputs on that and they are persisting to go ahead with the exisitng problem statement !!

Can you Help?

ykishor · New User Joined: 11 Aug 2007 Posts: 24 Location: my pc

I guess you require the O/P in a flat file. If yes, then unload the table to a dataset and use ICETOOL/DFSORT.

refer to the link below

www.ibmmainframes.com/about28396.html

aishwarya_20 · New User Joined: 19 Nov 2008 Posts: 57 Location: pune

Could you please expalin your problem. Do you want the ouput in the flat file or Row column is one of the columns in Table?

VIGNRSH · Posted: Tue Feb 24, 2009 6:51 pm

I want it as a column in the output, not inf the flat file.
The bsiness requirement is that ,
the column generated with the above seq numbers based on the key,
to be merged with other table in the join condition.
My seniors have asked me, to do only this part, and iam not sure of the other or actual requirement.

We are in db2 version 8.
So we cannotconsider using the row_number () function !

dick scherrer · Posted: Tue Feb 24, 2009 10:39 pm

Hello,