SQL COUNT() function and what to be aware of скачать в хорошем качестве

SQL COUNT() function and what to be aware of

Want to learn how to count records efficiently in SQL? In this video, we break down the SQL COUNT() function, showing you how to retrieve row counts, handle NULL values, and optimize your queries for performance. Whether you're analyzing data, generating reports, or tracking database records, mastering COUNT() is a must-have SQL skill! 📚 What you’ll learn: How the COUNT() function works in SQL. The difference between COUNT(*), COUNT(column_name), and COUNT(DISTINCT column_name). How to handle NULL values when using COUNT(). Real-world examples of COUNT() in analytics and reporting. With hands-on examples and clear explanations, this tutorial will help you use COUNT() effectively in your SQL queries. 🚀 👉 Watch now and take your SQL skills to the next level! #SQLTutorial #SQLCOUNT #SQLQueries #DataAnalytics #DatabaseProgramming Checkout the forthcoming video on aggregation and how we use COUNT() with GROUP BY For my full course on Udemy use the link below for the lowest price offer and become a SQL hero ! https://www.udemy.com/course/hands-on...