Jillysyuki·Sep 15Combine, Then Compare: A Beginner’s Path Through Joins and Window FunctionsIf you’ve worked with SQL for even a short time, you’ve probably used JOIN to pull data from two tables together. But what happens when you…A response icon1
Imalka Prasadini·Mar 25Mastering SQL: EXISTS, IN, CTEs, and Derived TablesWhen working with SQL in real-world systems, simple queries are often not enough. As applications grow, we need more flexible and efficient…
Sneha Gupta·Mar 16SQL String Functions Every Analyst Should KnowReal data is messy. String functions are how you clean it up without leaving SQL.
Sneha Gupta·Mar 12SQL NULL Values — Why They’re Confusing and How to Handle ThemNULL is not zero. It’s not empty. It’s not false.
Priyanka·Feb 17The SQL Beginner’s Guide I Wish I Had in 2021…Whether you’re a student or a mom restarting your career, I know how overwhelming it feels. My journey with SQL started in 2021, and these…A response icon1
