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This command would do it:
IF(id = lag(id))duplicate=1.
Example
ID DUPLICATE
1 .
1 1
2 .
3 .
3 1
3 1
3 1
4 .
4 1
..........
Hector Maletta
Universidad del Salvador
Buenos Aires, Argentina
Steven Fink wrote:
>
> How do I create a variable to identify all duplicate
> cases, such as ID?
>
> Jay
>
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