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, PostgreSQL, and more.

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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.

Structured Query Language (SQL) (pronounced / ˌɛsˌkjuˈɛl / S-Q-L; or alternatively as / ˈsiːkwəl / ⓘ "sequel") [4][5] is a domain-specific language used to manage data, especially in a relational …

Jun 23, 2026 · Learn how to create, select, rename and drop databases with practical examples. Tables are the core data structures in databases organizing data into rows and columns. This section covers …

Mar 19, 2026 · This SQL Cheat Sheet is your quick-reference guide for working with relational databases. It helps you recall key commands, logic, and query patterns to manage, manipulate, and …

In this tutorial we will teach you all about the different SQL statements. A database most often contains one or more tables. Each table is identified by a name (e.g. "Customers" or "Orders"), and contain …

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, …

This module introduces relational databases, the SQL language and Transact-SQL. You'll learn what kinds of statements make up the SQL language and look at the SELECT statement in detail.

SQL stands for Structured Query Language. It is the standard way to talk to relational databases: Postgres, MySQL, SQLite, SQL Server, Oracle, BigQuery, Snowflake, and dozens more.