03-25-2014 12:00 PM
In processing a data step, is there a way to indicate the first record in an overall data set? I know using 'first' works to indicate the first grouping of a certain combination of variables, but I am wondering about the entire data set.
03-25-2014 12:31 PM
If your datastep involves reading a single dataset then testing _N_=1 will signal the first datastep iteration. Otherwise, using the INDSNAME=myVariable option in the SET statement will give you a dataset name to compare with the previous iteration (IF myVariable ne lag(myVariable)) to detect the fiirst observation from each new dataset, including the first one.
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