SQL inside programs
How to write SQL inside RPG, why SQLCODE zero does not mean everything went well, and where injection hides on this platform too.
Articles tagged #rpg — 5 results
RPG: from columns to free-form
Why old code is written in columns, what genuinely changed with free-form, and how to live with two forms of the same language in one application.
Programming on IBM i: sources, ILE, RPG and SQL
How software is written, compiled and kept alive on this platform. For anyone arriving from other languages, and for anyone who has worked here for years without ever seeing the reasons written down.
Migrating from RPG III to RPG IV
The automatic conversion works and is the right starting point. The real work begins afterwards, and it pays to know in advance where it gets stuck.
An introduction to free-form RPG
Free-form is not RPG dressed up as another language: it is the same RPG freed from the columns. What really changes once you stop counting positions.