R169 – SQL code has been commented out. It should be removed before code checkin (WMB)

SQL code has been commented out. It should be removed before code checkin (WMB)

Having code in comments is confusing for those reading the code afterwoods.
It can indicate to the reader that the code is not complete, it makes the code longer, and can often mean partially completed or partially rolled back features are still in the code base.

Rather then using the code to track previous versions, it is better to use your version control system to track code rather then comments.