Open links in new tab
    • Coursera
      www.coursera.org › career › academy
      About our ads

      Coursera Online Courses - Coursera Official Site

      Coursera Online Courses - Coursera Official Site
      SponsoredGet professional-level training and earn an industry-recognized credential with Coursera. Apply your new skills to real-world projects using the latest industry tools & techniques.

      14d Money-Back Guarantee · Earn a Course Certificate · Achieve Your Goals

      Spring Sale: 40% off Coursera Plus · Valid Mar 24 - Apr 27
    • The Knowledge Academy
      https://www.theknowledgeacademy.com › SQL
      About our ads

      SQL Courses - Learn From SQL Expert

      SponsoredInhouse & Group Discounts, Corporate & Public Sector Bespoke Courses, Book by Card/PO. 1 Day SQL Database Certification Training Courses, Expert Trainers, Classes Running Weekly
    • DataCamp
      www.datacamp.com › learn › sql
      About our ads

      Online SQL Courses - Online SQL Course - SQL Online Courses

      SponsoredLearn SQL through interactive coding exercises online. Start with our free course today. All you need to begin learning SQL for Data Science. Start our free course today.
  1. 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
  1. 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:

    Feedback
  2. 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. 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 …