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SQL Interviews

Focused preparation for SQL-heavy interviews: joins, windows, CTEs, performance intuition, and multi-step analytical queries — text-first practice with sample schemas.

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You can read the curriculum below without an account. Enrollment opens your private study path.

Curriculum phases

  1. 1. SQL Core

    • · SQL Interview Mindset
    • · Joins and Nulls { } Run
    • · GROUP BY and HAVING { } Run

  2. 2. SQL Advanced

    • · Window Functions Deep Dive { } Run
    • · CTEs and Readability { } Run
    • · Ranking and Top-N { } Run

  3. 3. Interview Patterns

    • · Sessionization and Gaps { } Run
    • · Funnels in SQL { } Run
    • · Self-Joins and Hierarchies { } Run

  4. 4. Interview Readiness

    • · SQL Performance Basics
    • · SQL Edge Case Drills { } Run
    • · SQL Interviews Mock Prep { } Run

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