W3schools - https://www.w3schools.com/sql/
Head First SQL - https://www.amazon.in/Head-First-SQL-Beighley-Lynn/dp/8184043686/ref=pd_vtp_5/262-6789241-8463946
Practical SQL - https://www.amazon.in/Practical-SQL-Beginners-Guide-Storytelling/dp/1593278276
SQL Cookbook - https://www.amazon.in/Cookbook-Cookbooks-OReilly-Anthony-Molinaro/dp/0596009763
SQL for Data Analytics - https://www.amazon.in/SQL-Data-Analytics-efficient-analysis/dp/1789807352/
SQL for Data Analysis by Udacity - https://www.udacity.com/course/sql-for-data-analysis--ud198
Intro to SQL by Khan Academy - https://www.khanacademy.org/computing/computer-programming/sql
Master SQL for Data Science by Linkedin Learning - https://www.linkedin.com/learning/paths/master-sql-for-data-science
Complete SQL Course by CampusX
Leetcode - https://leetcode.com/problemset/database/ - https://leetcode.com/studyplan/top-sql-50/
SQLZoo - https://sqlzoo.net/wiki/The_JOIN_operation
Hackerrank - https://www.hackerrank.com/domains/sql
SQL Notes - https://drive.google.com/file/d/12jParR0hyGNkp2hUQtFaJ5mVt9g1Bn_f/view
Cheatsheet - https://learnsql.com/blog/sql-basics-cheat-sheet/
Cracking the SQL Interview - https://xoraus.github.io/CrackingTheSQLInterview/
Interview Questions - https://github.com/Aafreen29/SQL-Interview-Prep-Question/blob/master/queries.sql
Interview Questions - https://github.com/dhaval1406/SQL/blob/master/SQL_interview_questions.txt
Case Study 1 - https://github.com/shawlu95/Beyond-LeetCode-SQL
Case Study 2 - https://github.com/kiwidamien/SQL_practice