It's far from the ideal situation, but I need to fix a database by appending the number "1" to the PK Identiy column which has FK relations to four other tables. I'm basically making a four digit number a five digit number. I need to maintain the relations. I could store the number in a var, do a Set query and append the 1, and do that for each table...
Is there a better way of doing this?
Consider adding another field to the PK instead of extending the length of the PK field. Your new field will have to cascade to the related tables, like a field length increase would, but you get to retain your original PK values.