Subquery vs Window Function — Which Wins?

Most SQL developers write correlated subqueries without realising the performance cost. For every row SQL processes, that subquery runs again. At scale, this becomes a serious problem.ROW_NUMBER fixes this — and makes your query scalable with one line change Many struggle to write confident SQL queries, especially when it comes to advanced concepts like window functions. This video addresses common sql problems and demonstrates how mistakes in sql queries can lead to production systems failures. Dive into understanding window functions and see both incorrect and correct SQL code examples. If you want to go deeper into real-world SQL concepts, grab a copy of my book Mastering SQL Window Functions 📘 ------------------------------------------------------------------------ ►►►LINKS◄◄◄ vidIQ to grow your channel faster! 🚀 https://vidiq.com/ManishSharma