Top Free Online SQL Courses in 2021

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Looking for an exciting new career? 

If you are planning your career path or looking for a transition in high-demand Jobs. Data Analyst is the most demand in 2021. A great option for anyone looking for a career change, a data analyst will be a great choice. to become a data analyst you need to have specific skills. learning SQL will be a good start towards a career as a data analyst. don’t know where to start? Here is the list of top free online courses for beginners.

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This is an introductory course on Database and SQL Querying. this will be taught you right from database concept to SQL querying. this is completely design for beginners. you need not have any knowledge of databases. it will walk you through step by step, right from setting up your environment to creating a first table to writing your first query. all you need to do is make your hands dirty and follow along with the instructor. this course contains five sections with 11 lectures. After successfully finishing this course, you will have the enough confidence to write simple queries related to Dates, Aggregation and String manipulation.
Requirements: This course is completely free and design for beginners with no prior knowledge or experience is required.
What you will learn:
  • Introduction and Setup
  • Introduction to Querying
  • Deep Dive into Querying
  • SQL Joins
  • Dates/Aggregation and String Functions
Level : Beginner
Time Duration : 2h 17m
Rating : 4.5
This fundamentals course teaches you everything you need to know to begin working with databases and query your data in SQL.  large and small businesses used this data-driven powerful language to extract meaningful insights by exploring and manipulating their data. syntax in SQL, also how to join tables and use of window functions, quickly summarize and about PostgreSQL functions to analyze your data. this is a free course, access with to Projects and Assessments. this program contains five courses. every part contains in detail course content. These free online SQL fundamentals definitely will make you ready for data analyst jobs.
Requirements:Completely free and Fundamental course with zero knowledge.
What you will learn:
  • Introduction to SQL
  • Joining Data in SQL
  • Intermediate SQL
  • PostgreSQL Summary Stats and Window Functions
  • Functions for Manipulating Data in PostgreSQL
  • Data Analysis in SQL (PostgreSQL) Assessment
Level : Beginner
Time Duration : 21 hours
This is a free, Self-paced course and Intermediate level course. For data professionals and developers this is an essential skill who is working with SQL databases. learn modifying and querying data in SQL Server, Azure SQL to programming with Transact-SQL, learn essential skills that employers need.
Requirements: This is an Intermediate course with a Basic understanding of databases and IT systems.
What you will learn :
  • Create Transact-SQL SELECT queries
  • Work with data types and NULL
  • Query multiple tables with JOIN
  • Explore set operators
  • Use functions and aggregate data
  • Work with subqueries and APPLY
  • Use table expressions
  • Group sets and pivot data
  • Modify data
  • Program with Transact-SQL
  • Implement error handling and transactions
Level : Intermediate
Time Duration : Estimated 6 weeks/4–5 hours per week

This Diploma course in Databases and T-SQL online completely free. you can start Learning this course and gain knowledge about database technology and how to program using T-SQL. start with introduction about the database, basics of sql like DML, DDL, SELECT Statement and INTERSECT, and EXCEPT functions. update and delete data in the database. this is a clear and simple course design for you. this course contains 15 modules with 74 topics. you need 10 hours to complete this free online SQL course . start it today.

Requirements : This is completely free Diploma course with basic or no prior knowledge.
What you will learn :
  • Core Database Concepts
  • Relational Concepts
  • Creating Databases And Database Objects
  • Using DML Statements
  • SQL Server Administration Fundamentals
  • Introducing Transact SQL
  • Querying Tables With SELECT
  • Query with Multiple Tables And Operators
  • Using Functions And Aggregating Data
  • Working With Subqueries, Table Expressions And Data
  • Modifying Data And Using TSQL in Programming
  • T-SQL Error Handling And Transactions
  • Assessment
Level : Beginner
Time Duration : 10 hours

Udacity offers almost many courses for free. start learning this sql for data analysis free course offered by udacity. This is a beginner level course & it takes almost 4 weeks to complete it. this structured query language course designed in such a way that where you get to learn about extracting and analyzing data which is stored in a databases. also learn how to join the tables in sql and also learn how to perform aggregations in sql. learn how to do subqueries, manipulations, window functions, temp tables and more complex analysis with this wonderful free course.

Requirements: General knowledge of working with spreadsheets

What you will learn :

  • How to write common SQL commands
  • How to use logical operators in SQL
  • How to JOINs & combine data from multiple tables
  • How to write LEFT JOINS from multiple tables
  • How to write common aggregation in SQL
  • How to write CASE & DATE functions & NULL Values
  • How to write subqueries & how to run multiple queries
  • How to use temp tables & how to access tables for multiple queries
  • How to do data cleaning using SQL
  • How to perform more analysis task using window functions

Level : Beginner

Time Duration : Approx 4 weeks

For data science you need to have very good knowledge on database. learning this sql for data science not only boost your database knowledge but it will also start your journey towards data science. in this course you will learn sql for analysis purposes. this course covers the many sql topics for data science like common operators, data combination, use of case statements, data governance and profiling, structure interpretation and source data relationships for data analysis. this course you can take it completely free by apply for financial aid which is available for almost of the courses on coursera platform.

Requirements: There is no specific requirement although you will need simple text editor for final project.

What you will learn :

  • How to identify data subset
  • How to write sql query to limit results
  • How to use sql commands to perform sort, filter & data summarization
  • How to use UNION operator for analysis
  • How to integrate data to perform analysis

Level : Beginner

Time Duration : Approx. 14 hours