Problem with messages in forum(?)

Deleting / updating too much data in prod. Been there, done that :)
After talking some more experienced devs, they did it too. But now I always wrap the whole thing in a transaction that rolls back immediately. Something like this:

begin tran
 // select stuff before
 // do delete / update
 // run the same select to check and check number of rows affected
rollback tran

And re-run with commit if it's ok.