Sure you can. Just make your transport protocol only support taking in a stored procedure name and parameters for DMLs, and some typed representation for DDLs.

Sure you can. Just make your transport protocol only support taking in a stored procedure name and parameters for DMLs, and some typed representation for DDLs. But while that prevents people from concatenating strings to form DML queries as a whole, it obviously doesn't prevent the kind of concatenation wereHamster mentioned.