Can someone explain me Compare procedure ID statement use with simple example.
Do you mean using proc compare ?
Let have:
data A with
ID VAR1
1 25
2 33
data B with
ID VAR1
2 20
3 50
Without ID statement comparison will be first row of A with first row of B etc.
With ID statement caomparison will be
A ID=1 with no parallel in B
A ID=2 with B ID=2 etc.
Read the very fine SAS documentation for proc compare: http://support.sas.com/documentation/cdl/en/proc/69850/HTML/default/viewer.htm#n1nwxbchh5hpu1n1h28km....
It includes examples.
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