SQL Tutorial
Learn how to use SQL to store, manipulate, and retrieve data in relational databases.
What is SQL?
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 and other database systems.
SQL is easy to learn, and it's a valuable skill for anyone working with data.
SQL Example
query.sql
SELECT CustomerName, City FROM Customers;
-- This statement selects the CustomerName and City columns from the Customers table.
SELECT * FROM Customers
WHERE Country='Mexico';
-- This statement selects all columns from customers that are from Mexico.Why Learn SQL?
SQL is a crucial skill for data professionals and developers alike.
Database Management
The standard language for relational database management systems.
Career Opportunities
High demand for professionals with SQL skills in various roles.
Data Analysis
Essential for data analysts to query and retrieve data from databases.
Backend Development
Used by backend developers to interact with the application database.