newStmt.Vars = append(newStmt.Vars, stmt.Vars...)
	}

	for k, c := range stmt.Clauses {
		newStmt.Clauses[k] = c
	}

	for k, p := range stmt.Preloads {
		newStmt.Preloads[k] = p
	}

	if len(stmt.Joins) > 0 {
		newStmt.Joins = make([]join, len(stmt.Joins))
		copy(newStmt.Joins, stmt.Joins)
	}

	if len(stmt.scopes) > 0 {