October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, Fourth Edition
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Day 3. Expressions, Conditions, and Operators
On Day 2, “Introducing the Query,” you used SELECT and FROM to manipulate data in interesting (and useful) ways. Today you learn more about SELECT and FROM. You will expand the basic query with some new terms, a new clause, and a group of handy items called operators. When the sun sets on Day 3, you will
Know what an expression is and how to use it
Know what a condition is and how to use it
Be familiar with the basic uses of the WHERE clause
Be able to use arithmetic, comparison, character, logical, and set operators
Have a working knowledge of some miscellaneous operators
Note
We used Oracle's Personal Oracle and MySQL to generate today's examples. Other implementations of SQL may differ slightly in ...
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