SQL and database interview
SQL और डेटाबेस साक्षात्कार
SELECT, JOIN ideas, indexes and transactions — educational mocks.
Question 1 / 2 · intermediate · database, conceptual
What problem does a JOIN solve, and when is it the wrong tool?
Educational mock interviewer. Scoring counts how many key ideas your words covered. It is practice, not a hiring decision, and not a question from a named company.
