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1. www.sql-practice.comLearn SQL - Online SQL Terminal - Practice SQL Querys

   www.sql-practice.com

   Practice SQL querys with an online terminal. Solve SQL query questions using a practice database. Learn and improve your SQL skills.

   • COUNT

     COUNT - Learn SQL - Online SQL Terminal - Practice SQL...

   • AVG

     AVG - Learn SQL - Online SQL Terminal - Practice SQL Querys

   • SUM

     SUM - Learn SQL - Online SQL Terminal - Practice SQL Querys

   • MAX

     MAX - Learn SQL - Online SQL Terminal - Practice SQL Querys

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     MIN - Learn SQL - Online SQL Terminal - Practice SQL Querys

   • Window Function Basics

     Window Function Basics - Learn SQL - Online SQL Terminal -...

   • LAG

     LAG - Learn SQL - Online SQL Terminal - Practice SQL Querys

   • LEAD

     LEAD - Learn SQL - Online SQL Terminal - Practice SQL Querys

2. www.hackerrank.com › domains › sqlSolve SQL - HackerRank

   www.hackerrank.com › domains › sql

   Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews.

3. learnsql.comSQL online courses | LearnSQL.com

   learnsql.com

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   #1 SQL Training Platform. Learn & Practice SQL. Achieve SQL mastery with the most comprehensive set of 75 hands-on online SQL courses for beginners and experts. Issuer of SQL Competency Certificate; 1,500,000+ users trained; 4 SQL dialects; Operating since 2016

4. sqlbolt.comSQLBolt - Learn SQL - Introduction to SQL

   sqlbolt.com

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   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.

5. www.codecademy.com › learn › leaLearn SQL - Codecademy

   www.codecademy.com › learn › lea

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   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.

6. www.sql-easy.comSQL Easy: The Best Way to Learn SQL (It's FREE!)

   www.sql-easy.com

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   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. More than 200,000 students learnt SQL since 2017.

7. sqltest.onlineSQL Practice: Get the actors

   sqltest.online

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   Sharpen your SQL skills with our interactive exercises! Practice a wide range of SQL tasks, from basic queries to advanced techniques. Get immediate feedback on your solutions, helping you learn from mistakes and improve your skills.