SQL Arena
Track · Backend

SQL at work

Practical formats: debugging, data quality, indexes, EXPLAIN, transactions, migrations, schema design.

90 tasks~6 h5 modules

Track program

5 modules
  1. 1
    Module 1

    Debugging & data quality

    14 tasks
  2. 2
    Module 2

    Indexes, EXPLAIN, optimization

    35 tasks
  3. 3
    Module 3

    Transactions & locking

    25 tasks
  4. 4
    Module 4

    Schema & migrations

    12 tasks
  5. 5
    Module 5

    Practical scenarios

    4 tasks

Who it's for

This track is built for people preparing for a backend developer role. Tasks progress from basic to advanced, solutions are graded automatically, and both PostgreSQL and MySQL are supported.

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