When we run an SQL query SELECT * FROM MYTABLE etc and the class has for example a Collection field, then this field could be the first processed in the compile and this can result in a message like "View class has no persistent fields" whatever that is supposed to mean. The check has been in the wrong place since version 1.25 of SQLQuery, and the message is total bollocks. Should be a check where no field has a datastore column, and is nothing to do with views