May 2008
Beginner
504 pages
8h 34m
English
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Chapter 7. Introduction to the Database Query
In this seventh hour, you will learn about database queries, which involve the use of the SELECT statement. The SELECT statement is the most frequently used of all SQL commands after a database’s establishment. The SELECT statement allows you to view data that is stored in the database.
The highlights of this hour include:
What a database query is
How to use the
SELECTstatementAdding conditions to queries using the
WHEREclauseUsing column aliases
Selecting data from another user’s table
What Is a 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 ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.