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I have always liked the idea of doing something with the previous and/or
the next-look-ahead row while you work with the current row. I suspect
that exists. But not with external coding but with some kind of say:

select col1, col2 + PREVIOUS_ROW(col1) from sometable where
somecondition=true/false; // whatever

There may also be a kind of NEXT_ROW(col2) thing.

This is of course a meta-statement of the idea.

You may say I can write a UDF that returns the previous row col2 value, but
it would be very difficult because of the nature of your table and your
logic.

It would be nice that this be an intrinsic DB2 functionality. Do we have
that already?

Please your comments.

TIA.

Javier.

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