In SQL, you can use windowing functions to get the lead and lag values of a column. The lead() function returns the value of a column in the next row of the current row’s partition, and the lag() function returns the value of a column in the previous row of the current row’s partition.
To use lead() and lag() functions, you need to specify the ordering of the rows within the partition using the ORDER BY clause in the OVER clause. You can also specify the partitioning of the rows using the PARTITION BY clause in the OVER clause.
Here’s an example of using lead() and lag() functions in SQL:
