Am I a bad analyst, or is my boss expecting way too much?

I started a new job as a Data Analytics/Science Analyst in August, and within my first week, was expected to "hit the ground running" and write an entire ETL script in SQL / Oracle without knowing anything about any of the data tables or knowing my way around, knowing the culture or any of the customs with how to create dashboards... I did it, but it felt stressful.

My boss is not supportive or encouraging at all. She's very dry, …

analyst analytics boss data data analytics datascience etl job oracle running science sql tables