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SQL45 min
SQL Challenges
Ten graded problems drawn from real ETL work. Write the query, press Check, and your result set is compared against the reference answer row by row.
- 01
Checking compares result sets, not query text — any correct approach passes.
- 02
Row order is ignored unless the question explicitly asks for a sort.
- 03
Hints are there. Using one is not cheating; guessing blindly is.
Challenge 1 of 10
0 solved
List every customer from Karnataka, showing name and city, sorted by name.
Reference answer unlocks after two attempts
SQL editor. Press Command or Control plus Enter to execute. Suggestions appear as you type; use the arrow keys to choose one and Enter or Tab to insert it, or Escape to dismiss.
All challenges
Live database
Waiting for SQLite…
Run something and the rows land here.