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SQL Queries for Mere Mortals: A Hands-On Guide to Data Manipulation in SQL, Second Edition by Michael J. Hernandez, John L. Viescas

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Sample Statements

You now know the mechanics of constructing UPDATE queries. Let’s look at a set of samples, all of which request that one or more columns in a table be changed in some way. These examples come from four of the sample databases.

We’ve also included a view of each target table before and after executing the update and a count of the number of rows that should be changed by each sample UPDATE statement. The name that appears immediately before the count of rows changed is the name we gave each query in the sample data on the companion CD you’ll find bound into the back of the book. We stored each query in the appropriate sample database (as indicated within the example) and prefixed the names of the queries relevant to this chapter ...

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