[Rails5] Fall back to nvarchar for sp_executesql.

Author: metaskills

lib/active_record/connection_adapters/sqlserver/database_statements.rb

@@ -240,10 +240,8 @@ def sp_executesql_sql_type(attr)
           case value = attr.value_for_database
           when Numeric
             'int'.freeze
-          when String
-            'nvarchar(max)'.freeze
           else
-            raise TypeError, "sp_executesql_sql_type can not find sql type for attr #{attr.inspect}"
+            'nvarchar(max)'.freeze
           end
         end