Can you help me with this SQL-Query?

Jeroen’s colleague had the misfortune of being assigned to debug an intermittent, unspecified error in the one of the oldest of the legacy applications.
„The good news is that I’ve isolated it to a database query,“ he told Jeroen,
„the bad news is that I’ve isolated it to a database query.“

Knowing that his colleague wasn’t a big fan of databases, Jeroen offered his assistance. In response, he received the following image.

xD

Legacy Hostapplikationen. Enjoy!

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