March 3, 2021
March 3, 2021 | Volume 16 Issue 56
- LEAD ARTICLE: SQL 101: A Data Definition Language Hands-on Tour, Part 7
- FEATURED ARTICLE: ILE RPG Tutorial: Using CALLP to Call an ILE Program
- NEWS HIGHLIGHT: IBM Power Systems Enhances Hybrid Cloud Capabilities with Red Hat
- FEATURED NEWS: System i Developer Announces 2021 Hands-On Workshops for IBM i Developers
- WEBCAST: Node.js on IBM i Webinar Series Pt. 2: Setting Up Your Development Tools
- FEATURED VIDEO: Design an Invoice in 10 Minutes
- EVENT: RPG & DB2 Summit Lunch & Learn Series
SQL 101: A Data Definition Language Hands-on Tour, Part 7
Today’s TechTip is a two-for-one. I’ll talk about SQL’s OVRDBF replacement, ALIAS, and a simple yet dangerous SQL statement, DROP. Keep reading to find out more.
By Rafael Victória-Pereira
Let’s start with ALIAS. In a nutshell, we can say that ALIAS is Override Database File (OVRDBF) made simple, practical, and permanent.
If you ever used the OVRDBF CL command, then the functionality provided by ALIAS should be easy to grasp; it’s exactly the same! If you never used OVRDBF, it’s a way to use an alternate name for a file or, most importantly, a member of a file. This is especially important because you can’t specify a file member in SQL. The file member concept is an IBM i peculiarity, and SQL has no idea how to handle it. Fortunately, the CREATE ALIAS SQL instruction allows you to create a name for a given member of a file.
IBM Quantum Computer Demonstrates Next Step Towards Moving Beyond Classical Supercomputing
ILE RPG Tutorial: Using CALLP to Call an ILE Program
Learn how to use a prototyped call, an alternative to an ILE RPG sub-procedure, to call one program from another
by David Shirey
Editor’s Note: This article is excerpted from chapter 8 of 21st Century RPG: /Free, ILE, and MVC, by David Shirey.
In some situations, when using an ILE sub-procedure in your program, you may want to write the sub-procedure up as a small program and then call it from another program. Granted, that is not technically a sub-procedure, but we will let that go for the moment and concentrate on the call of one program by another.
Why Migrate When You Can Modernize?
Explore the main considerations you should be aware of before embarking on a (migration or modernization) project. Take a deeper dive into business motivations and factors that could potentially influence your decision to migrate or modernize your existing IT platform and its risks.
More than ever, there is a demand for IT to deliver innovation.
Your IBM i has been an essential part of your business operations for years. However, your organization may struggle to maintain the current system and implement new projects.
The thousands of customers we've worked with and surveyed state that expectations regarding the digital footprint and vision of the companyare not aligned with the current IT environment.
Node Webinar Series Pt. 1: The World of Node.js on IBM i
Have you been wondering about Node.js? Our free Node.js Webinar Series takes you from total beginner to creating a fully-functional IBM i Node.js business application.
Part 1 will teach you what Node.js is, why it's a great option for IBM i shops, and how to take advantage of the ecosystem surrounding Node.
In addition to background information, our Director of Product Development Scott Klement will demonstrate applications that take advantage of the Node Package Manager (npm).
watch now!
Low Code: A Digital Transformation of Supply Chain and Logistics
Learn how businesses leverage Low-Code to continue to deliver value through digital transformation. Discover how the power of Low-Code is helping many businesses evolve their supply chain, increase ROI, and achieve more tangible results.
Watch this webcast now.
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System i Developer Announces 2021 Hands-On Workshops for IBM i Developers
8 full-day workshops feature labs & live instruction, online
System i Developer today announces Summit Hands-On Live!, a series of live, interactive workshops that will take place online each Tuesday and Thursday from April 27, 2021 through May 20, 2021.