Is there a way to reverse what you update/delete?

Answer 1

create a backup table before performing operations

Answer 2

you can use'' Begin Tran " at first and "end" after your update cod for examine your query code

Answer 3

No. Be extremely careful with these commands

Answer 4

update

Answer 5

Nope. Once you run the operation that information will be lost. Always use a 'where' clause to make sure the right info will be modified else back up 1st to be able to 'undo'