Questions and Answers
Answer a real business question in SQL without asking anyone for a cloud account.
$72
this phase
- Open1.1
What Analytics Owns
Free previewThe job in one sentence: a question in, a number someone acts on out, and why that is not the job of moving the data.
- 1.2
Getting Data In
Load CSV and Parquet, fix the column that arrived as text, and look at a dataset before trusting it.
- 1.3
SQL That Answers Something
SELECT, WHERE, GROUP BY, and reading your own result set with suspicion.
- 1.4
Joins and the Fan-Out
How one extra join doubles revenue, and how to catch it before anyone else does.
- 1.5
Windows and Cohorts
CTEs, window functions, retention, and building a hard query one readable step at a time.