I have a text column that I want to see if it has larger than 4000 characters. If it does have more than 4000 characters, then start at the right most character and go back 4000 characters.

I realize that the following code is not correct. But it is a start.

```
select 
case 
when datalength(column1) > 4000 then
right(column1, 4000)
case datalength(column1) <= 4000 then 
column1
end 
from table_1

```