Sams Teach Yourself SQL in 24 Hours (5th Edition) (Sams Teach Yourself -- Hours)

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Sams Teach Yourself SQL in 24 Hours, Third Edition

By Ronald R. Plew, Ryan K. Stephens

Table of Contents
Part III.  Getting Effective Results from Queries

Hour 9. Summarizing Data Results from a Query

In this hour, you learn about SQL's aggregate functions. You can perform a variety of useful functions with aggregate functions.

The highlights of this hour include

  • What functions are

  • How functions are used

  • When to use functions

  • Using aggregate functions

  • Summarizing data with aggregate functions

  • Results from using functions

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