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    • The Knowledge Academy
      https://www.theknowledgeacademy.com › SQL
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      SQL Courses - Learn From SQL Expert

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    • DataCamp
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      Online SQL Courses - Online SQL Course - SQL Online Courses

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  2. W3School
    https://www.w3schools.com › sql

    SQL Tutorial - W3Schools

    • SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, PostgreSQL… See more

    Examples in Eac…

    With our online SQL editor, you can edit the SQL statements, and click on a button to view the result. Click on the "Try it Yourself" button to see how it works.

    W3School
    SQL Exercises

    Many chapters in this tutorial end with an exercise where you can check your level of knowledge. See all SQL Exercises

    W3School
    SQL Examples

    Learn by examples! This tutorial supplements all explanations with clarifying examples. See All SQL Examples

    W3School
    SQL Tutorial - Full Database Course for Beginners
    4:20:39
    SQL Tutorial - Full Database Course for Beginners
    YouTubefreeCodeCamp.org20.5M viewsJul 2, 2018
    SQL Tutorial - GeeksforGeeks
    Learn the foundational concepts of SQL, essential for anyone working with relational databases. This section covers the syntax, commands, and key elements to start querying and managing data eff…
    GeeksForGeeks · https://www.geeksforgeeks.or…
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    SQL (Structured Query Language) is the standard language for interacting with Relational Database Management Systems (RDBMS). It is used to store, retrieve, manipulate, and manage data in databases such as MySQL, PostgreSQL, Oracle, and SQL Server. SQL works with data stored in tables (rows and columns) and provides commands for defining structures, querying data, and controlling access.

    Core SQL Categories:

    • DDL (Data Definition Language) – Defines and modifies database structures. Examples: CREATE, ALTER, DROP

    • DML (Data Manipulation Language) – Manages data within tables. Examples: SELECT, INSERT, UPDATE, DELETE

    • DCL (Data Control Language) – Controls access to data. Examples: GRANT, REVOKE

    • TCL (Transaction Control Language) – Manages transactions. Examples: COMMIT, ROLLBACK, SAVEPOINT.

    Basic SQL Syntax Example:

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  2. SQL Tutorial
    https://www.sqltutorial.org

    SQL Tutorial: Learn SQL from Scratch for Beginners

    This web page offers a comprehensive guide to SQL, the standard language for data interaction in relational databases. It covers the basic syntax, querying, sorting, filtering, joining, grouping, set …

  3. GeeksForGeeks
    https://www.geeksforgeeks.org › sql › sql-tutorial

    SQL Tutorial - GeeksforGeeks

    Nov 5, 2025 · Learn the foundational concepts of SQL, essential for anyone working with relational databases. This section covers the syntax, commands, and key …

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