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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.
This tutorial provides you with easy to understand SQL instructions and allows you to practice while you are learning, using an online SQL interpreter. By practicing your SQL commands and seeing immediate results you will learn quickly.
Darmowe lekcje wideo SQL dla początkujących, które pomogą nauczyć się programowania w języku SQL od podstaw. Bezpłatny kurs online do samodzielnej nauki w domu.
1. Manipulation. Learn how to use SQL to access, create, and update data stored in a database. 2. Queries. Perform more complex queries by learning essential query keywords and functionality. 3. Aggregate Functions.
Welcome to SQLBolt, a series of interactive lessons and exercises designed to help you quickly learn SQL right in your browser. What is SQL? 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.
9 gru 2021 · freeCodeCamp offers a relational database curriculum that covers SQL, PostgreSQL, MySQL, and more. You can also find other free YouTube courses by Mike Dane, Kyle, Nelson, Bharath, Mosh, Brad, and UC Davis.
This SQL tutorial helps you get started with SQL quickly and effectively through many practical examples. If you are a software developer, database administrator, data analyst, or data scientist who wants to use SQL to analyze data, this tutorial is a good start.
