December 2010
Intermediate to advanced
451 pages
11h 16m
English
Content preview from Oracle and PL/SQL Recipes: A Problem-Solution Approach
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3-4. Driving from an Expression Having Multiple Outcomes
Problem
You have a single expression that yields multiple outcomes. You are interested in evaluating the expression and performing a different set of statements depending upon the outcome.
Solution
Use a CASE statement to evaluate your expression, and decide which set of statements to execute depending upon the outcome. In the following example, a SQL*Plus script accepts a region entry, which is being evaluated to determine the set of statements to be executed. Based upon the value of the region, the corresponding set of statements is executed, and once those statements have been executed, then the control is passed to the statement immediately following the CASE statement.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.