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 …

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 …

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 …

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 …

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 …

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 …