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May 16, 2021 03:00 SQL
SQL is the standard computer language for accessing and processing databases.
In this tutorial, you'll learn how to use SQL to access and process data from data systems such as MySQL, SQL Server, Access, Oracle, Sybase, DB2, and other database systems.
Each chapter provides a simple example of SQL.
SQL queries select all records from the user table:
SELECT * FROM users;
SQL queries remove a single record from a user table by using the where clause:
DELETE FROM users WHERE user_id=299;
The purpose of this reference is to help beginners learn SQL languages in depth.
Test your SQL skills at w3cschool!
An SQL quick reference. Print and put it in your pocket.
Data types and scopes for Microsoft Access, MySQL, and SQL Server.
It is well known that obtaining a certificate is the best proof of a programming exampleGo through the customs
This reference prepares a variety of examples, and before you officially begin the exercise, I assume that you already know what a database is, especially a relationship database management system (RDBMS), and what a computer programming language is.