In using a FindByNativeSql with a sql select statement that uses column alias.

select order_id, sum(...) as total
...

The "as total" is a column alias, and that is not being used.

So to fix, in....

com.avaje.ebean.server.find.FinderNativeSql.getPropertyNames()

...
String columnName = rsmd.getColumnName( index);

should be....

String columnName = rsmd.getColumnLabel( index);