This article explores how performance-focused code review works, what reviewers should look for, and how teams can prevent slowdowns long before users complain.

when Extract(month from date '2005-08-10') between 7 and 9 then 'Q1' when Extract(month from date '2005-08-10') between 10 and 12 then 'Q2' when Extract(month from date '2005-08-10') between 1 and 3 ...