Question : Creating unique values for every row in a result set query

I am writing a stored procedure which is inserting data into a SQL table in a 3rd party application.  There is a unique field in this table, PRECID, which is a alphanumeric number generated by a sp, sp_getprecid.  When I insert multiple rows into the table, I need each PRECID field to generate a new PRECID with the execution of this SP.  If I create a variable EXEC sp_getprecid, and use that variable as the insert value, the same value will be inserted for all rows.  How can I loop to get a unique value for each row?  

Answer : Creating unique values for every row in a result set query

Yes.  You can't alter your database from within a function.  Looks like you will have to call it in a loop.