Why "ALTER TABLE bbcode..."

[CarCdr]

I want to change the code for QUOTE bbcode and I note that various other QUOTE mod's include the running of this query:

ALTER TABLE bbcode CHANGE bbcodereplacement bbcodereplacement TEXT NOT NULL;

What is the purpose of doing this before changing the QUOTE replacement code and does one need to run it before every tweak of said code?

[Zachery]

You no longer need to do that, that was for older version fo vB3