I'm using SQL Server 2008 and I need to make a VARCHAR field bigger, from (200 to 1200) on a table with about 500k rows. What I need to know is if there are any issues I have not considered. 

I will be using this TSQL statement:

```
ALTER TABLE MyTable
ALTER COLUMN [MyColumn] VARCHAR(1200)

```

I've already tried it on a copy of the data and this statement had no ill effects that I could see. 

So are there any possible problems from doing this that I may not have considered? 

By the way, the column is not indexed.