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It's one thing to create a great SQL query; it's another thing entirely to let your users do it dynamically.
Written by Joe Pluta
SQL is not a difficult syntax; it was designed to be relatively easy to use even for non-programmers, and it lives up to that goal. Selecting and sorting data is pretty straightforward: the WHERE clause and the ORDER BY do the heavy lifting. The harder part comes when the user wants to select a specific part number or a date range or a list of states or a combination of those or none at all. In this article, I'll show you the brute force method and then something a little more elegant and better-performing to boot!
Learn how to use this GUI tool to improve your SQL statements.
Written by Kevin Forsythe
Writing SQL statements that function correctly and deliver the desired results is only half the battle. We also need to manage the performance of those SQL statements. This might involve things such as how we write the statements, what indexes are in use, and what SQL engine is processing the statement. The Visual Explain tool within System i Navigator helps us manage all that and more.