Hello everyone,
I have an SAS question in terms of the "index" when doing "rename", as follows:
The SAS data set WORK.TEST has an index on the variable ID and the following SAS program is submitted. data WORK.TEST; set WORK.TEST( keep=ID Var_1 Var_2 rename=(ID=ID_Code); Total=sum(Var_1 Var_2); run; Which describes the result of submitting the SAS program? A. The index on ID is deleted. B. The index on ID is updated as an index on ID_Code. C. The index on ID is deleted and an index on ID_Code is created. D. The index on ID is recreated as an index on ID_Code.
The answer seems A, and I wonder why. Any help would be appreciated.
I chose C.
Indeed. - Actually, if you run the code as given above, the dataset test will not be replaced because of syntax errors. The code is missing a comma and a closing parenthesis.
The datastep creates a new dataset for which no index is defined.
Thank you very much!
so the new data set (the new WORK.TEST) has no index?
Thank you!
Indeed. - Actually, if you run the code as given above, the dataset test will not be replaced because of syntax errors. The code is missing a comma and a closing parenthesis.
Yes, the answer is A.
If you want to preserve the index, use the Copy Statement in PROC DATASETS with Index=YES (Default).
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