SQL analytics functions examples

Multi-Column Indexes: When You Need More Than One Column

March 3, 2025 by Vishal

Why are multi-column indexes essential for SQL database performance? This guide answers that question by exploring how they function, when to implement them, and how they significantly enhance the speed of queries involving multiple columns. Learn the ‘why’ behind composite indexes and the ‘how’ to implement them effectively for superior database optimization and query efficiency. … Read more

SQL LAG function explained!!

January 16, 2025January 12, 2025 by Vishal

Understanding the SQL LAG Function (With Examples) SQL LAG function is a powerful tool that enables you to access data from the previous row, which is related to the current row as well. It’s incredibly useful for trend analysis. For example, if you are tracking how much a stock price has changed from the previous … Read more

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