October 16, 2017 Ted Holt
In the previous episode of this exciting, action-packed series, I introduced you to the exception-handling methods that IBM has built into SQL PL. The cliff-hanger has lasted four months now, much too long. It’s high time I explained RESIGNAL, as I promised I would. I will explain SIGNAL while I’m at it.
Before I start the syntax lesson, I need to explain a bit of philosophy. I use the hit-the-ball-drag-Harry method of exception-handling when I embed SQL in RPG and COBOL programs. That is, I execute a command, test the SQL state, execute a command, test the SQL state, …Read more