Question: Explain the difference between SAS functions SCAN and SUBSTR.

Answer: SCAN is used to extract words from a string based on a specified delimiter, while SUBSTR is used to extract a substring from a given position in a string.

Example:

DATA parsed_dataset; SET original_dataset; /* Extract second word from variable */ new_variable = SCAN(variable, 2); /* Extract substring starting at position 3 */ another_variable = SUBSTR(variable, 3); RUN;

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