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w3schools.com
https://www.w3schools.com/sql/
SQL Tutorial - W3Schools
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.
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microsoft.com
https://www.microsoft.com/en-us/sql-server/sql-ser…
Microsoft SQL Server downloads
Get started with Microsoft SQL Server downloads. Choose a SQL Server trial, edition, tool, or connector that best meets your data and workload needs.
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wikipedia.org
https://en.wikipedia.org/wiki/SQL
SQL - Wikipedia
Introduced in the 1970s, SQL offered two main advantages over older read–write APIs such as ISAM or VSAM. Firstly, it introduced the concept of accessing many records with one single command. Secondly, it eliminates the need to specify how to reach a record, i.e., with or without an index.
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sqltutorial.org
https://www.sqltutorial.org/
SQL Tutorial: Learn SQL from Scratch for Beginners
Whether you’re a software developer, database administrator, data analyst, or data scientist, this SQL tutorial will help you unlock the power of SQL for managing and analyzing data.
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geeksforgeeks.org
https://www.geeksforgeeks.org/sql/sql-tutorial/
SQL Tutorial - GeeksforGeeks
Learn the foundational concepts of SQL, essential for anyone working with relational databases. This section covers the syntax, commands, and key elements to start querying and managing data effectively. This section guides you through the process of creating and managing databases.
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oracle.com
https://livesql.oracle.com/landing/
Oracle Live SQL
Featured Scripts and Tutorials Tutorial SQL Macros - Creating parameterised views This tutorial explains how to create a parameterized view using SQL Macros. The examples use the built-in sales history schema so there are no setup steps. Script Simple Explain Plan This script explains the plan for a query of the sh.sales and sh.products tables.
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sqlbolt.com
https://sqlbolt.com/
SQLBolt - Learn SQL - Introduction to SQL
Introduction to SQL 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.
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sql-easy.com
https://www.sql-easy.com/
Learn SQL Online Free - Interactive SQL Tutorial for Beginners
By practicing your SQL commands and seeing immediate results you will learn quickly. More than 200,000 students learnt SQL since 2017. Use the menu and follow the tutorial to learn SQL on your own. 🚀 Ready to Master SQL?
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dataquest.io
https://www.dataquest.io/guide/sql-tutorial/
SQL Tutorials: A Complete Guide – Dataquest
By picking up these SQL data summarization techniques, you'll be able to extract valuable insights from large datasets, identify trends, and make informed decisions.
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sqlzoo.net
https://sqlzoo.net/wiki/SQL_Tutorial
SQL Tutorial - SQLZoo
Tutorials: Learn SQL step by step 0 SELECT basics Some simple queries to get you started 1 SELECT name Some pattern matching queries 2 SELECT from World In which we query the World country profile table. 3 SELECT from Nobel Additional practice of the basic features using a table of Nobel Prize winners. 4 SELECT within SELECT In which we form queries using other queries. 5 SUM and COUNT In ...