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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 queries using a HAVING clause and have seen some of the types of requests you can answer. Let’s take a look at a set of samples, all of which request that the information be grouped and then filtered on an aggregate value from the group. These examples come from each of the sample databases.

We’ve also included sample result sets that would be returned by these operations and placed them immediately after the SQL syntax line. The name that appears immediately above a result set 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 ...

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