Over the years I have been guilty so many times of writing a rollback script that rolls column additions to a table. Which is essentially a script that will drop the added columns. When i create a new column with a default value i ALWAYS use a constraint name which i created. In the event you inherit someone else database who does not (not mine of course) :) forgetting to drop the default value constraint (which is something only an inexperienced DBA would do NOT ME of course) :)

As luck woul...
Continue reading ...