1) If you have a single table referenced in the query we have 'execute for update' (F8 or the arrow icon with a small table) and you will not need to 'mess' with the combo.
2) With queries referencing two tables (in a JOIN) we cannot omit the combo. The result set may contain identically named columns. The program cannot know what table user wants to update in that case. User will have to tell the program.