Hi,
I have a dataset at the person level but with duplicate rows. It has ID and character variables A, B, and C. I wanted unique rows, so I ran this code:
proc sort nodupkey data=have;
by ID char_A char_B char_C;
run;
It worked without producing an error message, but when looking through the data I noticed that at least one duplicate row remained.
ID Char_A Char_B Char_C
1 abc- d def_g ghi
1 abc- d def_g ghi
I'm not sure why this row remained in the data, as it looks like most of the duplicate rows were correctly deleted. Is there a way to troubleshoot and figure out whether there's some minor difference between the character variables or some other reason that the duplicate row wasn't removed?
Thanks!
Display the values of the BY variables for the suspect observations using $HEX format, I expect you will find they are different. There is probably a character that is displayed as a space but is not, or you have a different number of leading spaces.
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