SV_PAPERCLASSTEACHER PAPER_ID, CLASS_ID, TEACHER_ID, PAPERCLASSTEACHER_ID #{PAPER_ID}, #{CLASS_ID}, #{TEACHER_ID}, #{PAPERCLASSTEACHER_ID} insert into ( ) values ( ) delete from where PAPERCLASSTEACHER_ID = #{PAPERCLASSTEACHER_ID} update set PAPER_ID = #{PAPER_ID}, CLASS_ID = #{CLASS_ID}, TEACHER_ID = #{TEACHER_ID}, PAPERCLASSTEACHER_ID = PAPERCLASSTEACHER_ID where PAPERCLASSTEACHER_ID = #{PAPERCLASSTEACHER_ID} select from where PAPERCLASSTEACHER_ID = #{PAPERCLASSTEACHER_ID} select from where 1=1 and ( ) select from delete from where PAPERCLASSTEACHER_ID in #{item}