From Urvish's answer I fullfilled my requirement. Looked for duplicate value in key variable. We can mark this one as answered. But, I dont see correct answer, helpful answer buttons in this thread. Thanks all.
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you can try the below which is quite simple data temp; infile '/path/file.txt' scanover; input @'question' question $char100.; input @'a' a $char20.; input @'b' b $char20.; input @'c' c $char20.; input @'d' d $char20.; run;
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