SQL Basics: Writing a Simple Query

SQL Basics: Main Tips

• SQL is used for reading, writing and modifying data in a database.
• It's a standard tool for a variety of databases: MySQL, MS Access, SQL Server, Sybase, Oracle, Postgres, etc.
• To practice on your SQL basics, you will need to create your test database or use an online editor for queries.

SQL Simple Query Syntax

SELECT * FROM Customers;

Note: if you feel that this is easy, you can skip to a more advanced SQL tutorial like SQL Data Types.

SQL Basics: Summary

• Use SQL for reading, writing and modifying data in a database.
• SQL works on various types of databases: MySQL, MS Access, SQL Server, Sybase, Oracle, Postgres, and others.
• To practice writing SQL queries, you need to create a database or use an online editor.