/** modifies SelectQuery to order result set \param f field to order by \param asc ascending order \return *this, methods can be chained */ DataSource& orderBy(FieldType f, bool asc=true) { sel.orderBy(f.fullName(), asc); return *this; }
/** modifies SelectQuery to order result set by external table \param id foreign key field used to join table with query \param f field to order by \param asc ascending order \return *this, methods can be chained */ DataSource& orderByRelation(FieldType id, FieldType f, bool asc=true) { sel.source(id.table()); sel.where(id == T::Id); sel.orderBy(f.fullName(), asc); return *this; }