SQL that survives an onsite
Windows, grain, anti-joins. Analysts, engineers, scientists, and ML all sit this pad.
2–4 weeks · 6 lessons · about 275 minutes of focused work · Every role
Lesson 1 · 90 min
SQL problems
Filter easy first. Medium/hard look like the onsite.
SQL list →Lesson 2 · 60 min
Foundations track
Ordered set before you skip ahead.
Foundations →Lesson 3 · 25 min
Windows guide
Evaluation order out loud.
Windows article →Lesson 4 · 40 min
SQL interview stack
Whiteboard shapes, not trivia.
SQL questions →Lesson 5 · 20 min
SQL sandbox
Same tables as the graded pads.
Sandbox →Lesson 6 · 40 min
SQL practice exam
Original items.
SQL exam →