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![SAS author's tip: Adding data with a SELECT query](https://blogs.sas.com/content/sastraining/files/2013/03/linda-listening_compressed.jpg)
This week's SAS tip is from Kirk Lafler and his book PROC SQL: Beyond the Basics Using SAS. A SAS user since 1979, Kirk often takes his expertise on the road and is a frequent speaker at SAS conferences. He's also currently working on a second edition of the book. If