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Calcite | Level 5
I was wondering if I could tell proc expand not to delete rows in a data set for which there exists only a single observation per by-group. For example

proc expand data=IN out=OUT method=none;
by bgrp1 bygrp2 bygrp3;

will delete all lines in the OUT data set for which there exist only one observation per by-group in the IN dataset. I would prefer that the lines would still be there with the automatic variable TIME having a value of zero (I know that I could use a data step to create the automatic variable TIME).
Calcite | Level 5

Does anyone know the answer to this question? Proc expand deletes single observations. Is there any way to prevent this?

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