Complete SAS Programming Guide - Learn SAS and Become a Data Ninja - BY Statement (Sorting Variables, While Exploiting Y

The video tutorial explains how to use the BY statement in SAS to sort variables and utilize indexes. It covers the rules for using the BY statement effectively, demonstrates importing a dataset and creating an index, and shows how to verify if the index is utilized. The tutorial also discusses scenarios where SAS may not use the index, such as when sorting by descending order or by other variables.

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