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OCA Oracle Database SQL Exam Guide (Exam 1Z0-071) by Steve O'Hearn

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5

Using Single-Row Functions to Customize Output

CERTIFICATION OBJECTIVES

5.01     Use Various Types of Functions That Are Available in SQL

5.02     Use Character, Number, Date, and Analytical (PERCENTILE_CONT, STDDEV, LAG, LEAD) Functions in SELECT Statements

   ✓        Two-Minute Drill

Q&A     Self Test

This chapter looks at the topic of SQL functions. Functions perform unique tasks that boost the capabilities of SQL. There are many SQL functions, and it is important that you be familiar with all of them and understand how to use them individually and in various combinations in support of various real-world scenarios.

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