AI Based mock interviews for preparing for tech jobs

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• Updated Oct 19, 2026

Advanced SQL workbook: subqueries, window functions, CTEs, recursive CTEs, and datetime practice.

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• Updated Jan 11, 2026
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SQL Engineeering Handbook by Mohammad Ammar . Production-ready with SQL tutorials, interview questions, real-world projects, query optimization, window functions, and analytics engineering examples. Created by the Co-Founder of Apex Analyticx . Live Portfolio : https://theammarngp.lovable.app

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• Updated Oct 25, 2026
• SQL

The DataDriven 75. A focused, curated set of 75 real data engineering interview questions across SQL, Python, schema design, and pipeline architecture, each with a runnable browser sandbox.

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• Updated Jun 13, 2026

A comprehensive collection of SQL interview questions and solutions covering basic, intermediate, and advanced concepts. Includes explanations, best practices, and real-world SQL problems for Data Engineering and Software Development interviews.

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• Updated Aug 24, 2026

SQL practice problems solved across platforms for Data Analyst preparation

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• Updated Oct 31, 2026

Practice SQL interviews in the browser: PostgreSQL questions with schemas, seed data and graded answers — real Postgres (PGlite), works offline. https://heroldben.github.io/sql-practice-ide/

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• Updated Oct 30, 2026
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SQL Interview Preparation Guide with 100+ interview questions, practical SQL challenges, and scenario-based problems for aspiring Data Analysts.

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• Updated Jul 20, 2026

99 задач по SQL с онлайн-проверкой: SELECT, JOIN, GROUP BY, подзапросы, CTE, оконные функции. Тренажёр SQL для практики и подготовки к собеседованию.

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• Updated Oct 8, 2026

15 SQL mistakes that return wrong results without an error. Each with a minimal dataset and a DuckDB check. English and Spanish.

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• Updated Sep 26, 2026
• Python

Interview-focused BigQuery SQL revision: 18 chapters from essentials to window functions, JSON, scripting and performance, with runnable examples verified against BigQuery.

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• Updated Oct 29, 2026
• Python

A collection of 10 SQL business case studies demonstrating joins, aggregations, window functions, subqueries, and analytical SQL for Data Analyst

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• Updated Jul 8, 2026