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  • Guru: Fooling Around With SQL And RPG

    April 15, 2024 Gregory Simmons

    Editor’s Note: This was originally scheduled to be published on April 1. No joke. And for a lot of complex reasons, that could not happen. But, it’s still fun, so enjoy.

    I started out one morning, purely interested in having a bit of fun. Honest. In RSS within ACS, I often like to run this SQL:

     select *
     from json_table(
          QSYS2.HTTP_GET('https://icanhazdadjoke.com/',
                  '{"header": "Accept,application/json", "sslTolerate":"true"}'),
                  'lax $' columns ("joke" varchar(200) CCSID 1208)
          )
    

    Okay, that was fun. This is harmless, good fun. But then I thought, what if I put this into a simple RPG program? Then I …

    Read more
  • Guru: Binding Directory Entries

    June 5, 2023 Bob Cozzi

    I assume you’ve heard about *BNDDIR (Binding Directory) objects introduced circa 1994 with OS/400 V3R2. The infamous QC2LE binding directory is used by a huge number of RPG applications to access C runtime and unblocked MI functions such as system cvthc, cpybytes, and matmatr. You have probably seen RPG IV source code with the BNDDIR(‘QC2LE’) keyword on the header specification.

    I was one of the first developers outside of IBM to use Binding Directories for my own code. When I go back and look at my own RPG IV code created prior to mid-2007, well over 90 percent of it …

    Read more

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