I have problem with pk on sql server

```
When using updateToDatabase i have an error because pk can't be updated on sql 
server. 
I can fix this just changing the update clause on generated class, the problem 
is that each time i want to regenerate the class, i have to the same, is any 
solution for this?


```

Original issue reported on code.google.com by `josesala...@gmail.com` on 19 Dec 2011 at 10:12
