This tutorial shows you how to use the SQL LAG () function to access data of the previous row from the current row.

Nov 18, 2025 · The following example demonstrates the LAG function. The query uses the LAG function to return the difference in sales quotas for a specific employee over previous calendar quarters.

Sep 13, 2025 · What is the SQL LAG () Function? The SQL LAG () function is a window function that allows us to retrieve the value of a column from a previous row in the result set. Unlike aggregate …

This tutorial shows you how to use the LAG () function to access a row at a specific physical offset which comes before the current row.

Jul 5, 2024 · One of these powerful functions is the LAG() function, which is one of the commonly used window functions. It opens the door to comparing and calculating the change in values over a …

Jun 11, 2024 · The LAG () function – one of SQL’s window functions – is an important tool for planning and trend analysis. In this article, I’ll demonstrate how to include SQL LAG () in your queries using a …

Learn SQL LEAD and LAG functions with clear examples. Access previous and next row values, compare records, and prepare for SQL interview questions with confidence.

Jul 11, 2025 · In this article, we will learn the LEAD () and LAG () functions in MySQL, covering their syntax, parameters, and key differences. You’ll learn how to use these functions with real-world …

Jan 28, 2022 · Dive deep into the powerful SQL window functions, LAG () and LEAD (). Explore their intricacies, discover real-world examples, and avoid common pitfalls.

Nov 1, 2020 · I am using LAG SQL function to get the difference of 2 consecutive dates in the records. THe issue is, the result it is returning is in DATE -TIME format whereas I want it either to be in Days, …