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Added exercise directory and beginner questions on PostgreSQL#19

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fahimahammed merged 1 commit intofahimahammed:mainfrom
mathncode-sid:beginner-postgres-qna
Oct 3, 2025
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Added exercise directory and beginner questions on PostgreSQL#19
fahimahammed merged 1 commit intofahimahammed:mainfrom
mathncode-sid:beginner-postgres-qna

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Add beginner PostgreSQL interview questions

Pull Request Description

This PR adds beginner-friendly PostgreSQL exercises to the repository. Changes include:

  • Added exercises directory
    A new folder to organize PostgreSQL exercises and related materials.

  • Added beginner-exercises.md
    Contains 30 beginner-level PostgreSQL interview questions with detailed answers.

    • Covers core topics: table creation, data insertion, querying, joins, aggregation, constraints, and indexing.
    • Formatted entirely in Markdown for easy reading and direct inclusion in README files.

This contribution addresses the issue assigned to me: #12

These additions aim to help beginners practice PostgreSQL concepts and prepare for technical interviews.

@fahimahammed fahimahammed merged commit 5e8cbda into fahimahammed:main Oct 3, 2025
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