SQL Database Mastery

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🔅 Database Foundations: Intro to Databases 🌐 Author: Adam Wilbert 🔰 Level: Beginner ⏰ Duration: 3h 24m

🌀 Learn the basics of building databases in a platform agnostic way so you can continue on to other platforms later. Explore database setup, servers, GUIs, tables, objects, and more.

📗 Topics: Databases 📤 Join SQL Database Mastery for more courses

📦 Exercise Files

📱SQL Database Mastery 📱Database Foundations: Intro to Databases

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🚀 Popular SQL Challenges You Should Know! 🔥1. How to Find the Second Highest Value in a Column  Need to find the second highest salary? Use a combination of ORDER BY and LIMIT to get it easily: SELECT MAX(salary) AS second_highest_salary FROM employees WHERE salary < (SELECT MAX(salary) FROM employees); 2. How to Find the N-th Highest Salary in a Table  Want to find the N-th highest salary? Just order the salaries in descending order and use LIMIT to pick the exact one you need. For example, to find the 3rd highest salary: SELECT salary FROM employees ORDER BY salary DESC LIMIT 2,1; 📚 More SQL challenges and solutions available here: https://t.me/sql_and_dbt 🚀

🔅 SQL for Data Analysis 🌐 Author: Nikiya Simpson 🔰 Level: Intermediate ⏰ Duration: 1h 10m

🌀 Learn fundamental SQL data analysis techniques especially useful for developers. Explore querying relational database values, filtering results, leveraging functions, and more.

📗 Topics: SQL, Data Analysis 📤 Join SQL Database Mastery for more courses