When you use SELECT in a PL/SQL block, it’s important to make sure that exactly one row will always be returned by your query. If more than one row is returned, the TOO_MANY_ROWS exception occurs.

Maybe this is a strange question, but is there a way to add a single row (or several) to the return set of a SELECT statement?Example:I want to populate a drop down list with SELECT EmpID ...

Coming up to speed with other database management systems and Microsoft's own SQL Azure, row level security is now available in SQL Server.