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SQL Queries for Mere Mortals: A Hands-On Guide to Data Manipulation in SQL, Fourth edition by John L. Viescas

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15Updating Sets of Data

“It is change, continuing change, inevitable change, that is the dominant factor in society today.”

—ISAAC ASIMOV

As you learned in Part II, “SQL Basics”; Part III, “Working with Multiple Tables”; and Part IV, “Summarizing and Grouping Data”; using the SELECT statement to fetch data from your tables can be both fun and challenging. (Okay, so maybe some of it is a lot more challenging than fun!) If all you need to do is answer questions, then you don’t need this part of my book. However, most real-world applications not only answer complex questions but also allow the user to change, ...

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