SV_ATTACHKEYBOARD CLASS_ID, KEYBOARD_ID, ATTACHKEYBOARD_ID #{CLASS_ID}, #{KEYBOARD_ID}, #{ATTACHKEYBOARD_ID} insert into ( ) values ( ) delete from where ATTACHKEYBOARD_ID = #{ATTACHKEYBOARD_ID} update set CLASS_ID = #{CLASS_ID}, KEYBOARD_ID = #{KEYBOARD_ID}, ATTACHKEYBOARD_ID = ATTACHKEYBOARD_ID where ATTACHKEYBOARD_ID = #{ATTACHKEYBOARD_ID} select from where ATTACHKEYBOARD_ID = #{ATTACHKEYBOARD_ID} select from where 1=1 and ( ) select from select KEYBOARD_ID from where 1 = 1 and CLASS_ID = #{CLASS_ID} delete from where ATTACHKEYBOARD_ID in #{item}