Sams Teach Yourself SQL in 24 Hours, Third Edition By Ronald R. Plew, Ryan K. Stephens
Table of Contents
Hour 7. Introduction to the Database Query
A query is an inquiry into the database using the SELECT statement. A query is used to extract data from the database in a readable format according to the user 's request. For instance, if you have an employee table, you might issue a SQL statement that returns the employee who is paid the most. This request to the database for usable employee information is a typical query that can be performed in a relational database.
