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, Postgres, and other database systems.

Introduced in the 1970s, SQL offered two main advantages over older read–write APIs such as ISAM or VSAM. Firstly, it introduced the concept of accessing many records with one single command. Secondly, it eliminates the need to specify how to …

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Whether you’re a software developer, database administrator, data analyst, or data scientist, this SQL tutorial will help you unlock the power of SQL for managing and analyzing data.

Aug 20, 2025 · 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 effectively. This section guides you through the process of creating and managing databases.

Structured query language (SQL) is a programming language for storing and processing information in a relational database. A relational database stores information in tabular form, with rows and columns representing different data attributes and the various relationships between the data values. You can use SQL statements to store, update, remove, search, and retrieve …

Learn how to use SQL to access, create, and update data stored in a database. Learn powerful functions for performing complex database operations with ease. Earn a certificate of …

Jun 28, 2022 · What is SQL SQL, or Structured Query Language, is a programming language used to talk to databases. With SQL, you can store, manipulate, and retrieve data from relational databases. What Can You Do with SQL Retrieve data from a database. Filter and sort data from a database. Perform computations on database data. Insert records into a database. Update …

SQL, or Structured Query Language, is a language designed to allow both technical and non-technical users to query, manipulate, and transform data from a relational database. And due to its simplicity, SQL databases provide safe and scalable storage for millions of websites and mobile applications. Did you know?

Use the menu and follow the tutorial to learn SQL on your own. Click on any lesson below to start learning SQL interactively: SELECT specific columns. SELECT * grabs all fields (called columns) in a table. If we only wanted to see the name and num_books_read columns, we would type SELECT name, num... WHERE ... Equals.