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 …

It allows you to access the data or value from a previous row without using any SELF JOIN. This LAG function is beneficial in comparing the current row value with its previous row so that you can …

Mar 3, 2024 · In diving deeper into the lag function in SQL, I’ve found it to be a remarkable tool for analysis and data comparison. The lag function allows me to look back at data from previous rows …

Oct 1, 2025 · The LAG function in SQL is a window function that allows you to access data from a previous row in your result set without using self-joins. It’s particularly useful for comparing current …

Learn how to use SQL LEAD and LAG functions to access previous and next row values without self-joins. These powerful window functions make it easy to compare records, calculate changes, and …

The SQL LAG () function is a powerful analytical function that allows you to access data from a previous row within a result set. Specifically, it allows you to retrieve data from a specified offset before the …