Hey everyone, tis another merry entry of SQL Something!
Slipping in this last post for 2019!
HAPPY NEW YEAR AND ALL THE BEST FOR THE UPCOMING 2020!
Today we are going to look at using LAG and specifically how to use it to find the difference between times, where one time value... IS IN THE PREVIOUS ROW.
Turns out it's really simple using LAG (available in SQL 2015 onwards).
