SQL Tutorial
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.
Start learning SQL now »Examples in Each Chapter
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SQL Exercises
SQL Examples
Learn by examples! This tutorial supplements all explanations with clarifying examples.
SQL Quiz Test
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SQL References
At W3Schools you will find a complete reference for keywords and functions:
SQL Data Types
Data types and ranges for Microsoft Access, MySQL and SQL Server.