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Studio · SQL interview drill

Easy

Paid orders in the August window

Filter orders to paid rows in August 2026

Engine: MySQL
SELECT order_id, user_id, order_total,
       CAST(created_at AS DATE) AS order_date
FROM orders
WHERE order_status = 'paid'
  AND CAST(created_at AS DATE)
      BETWEEN DATE '2026-08-01' AND DATE '2026-08-31'
ORDER BY order_id;
Mentor ready · filter early, project only what you need
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SQLPySparkPandasPythonSCD Type 2FinOpsMedallionWindow functionsDuckDBIncremental MERGELate dataGrainSQLPySparkPandasPythonSCD Type 2FinOpsMedallionWindow functionsDuckDBIncremental MERGELate dataGrain

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01 / 05

Queries, joins, GROUP BY and window functions, step by step.

12
free lessons
108
practice problems
Start SQL

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What people say about LakeBench

5.0from 4 learners

  • very much useful for students to prepare for the interviews..
    Raja Z.Oct 2026
  • Really liked this website simple to use and everything looks perfect very useful website
    Gnanesh R.Oct 2026

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