SV_STUDENTHOMEWORKINFO HOMEWORK_PROBLEM_ID, RANK, CODE, STUDENT_ID, CLASS_ID, ANSWER, RIGHT, HOMEWORK_ID, STUDENTHOMEWORKINFO_ID #{HOMEWORK_PROBLEM_ID}, #{RANK}, #{CODE}, #{STUDENT_ID}, #{CLASS_ID}, #{ANSWER}, #{RIGHT}, #{HOMEWORK_ID}, #{STUDENTHOMEWORKINFO_ID} insert into ( ) values ( ) delete from where STUDENTHOMEWORKINFO_ID = #{STUDENTHOMEWORKINFO_ID} update set HOMEWORK_PROBLEM_ID = #{HOMEWORK_PROBLEM_ID}, RANK = #{RANK}, CODE = #{CODE}, STUDENT_ID = #{STUDENT_ID}, CLASS_ID = #{CLASS_ID}, ANSWER = #{ANSWER}, RIGHT = #{RIGHT}, HOMEWORK_ID = #{HOMEWORK_ID}, STUDENTHOMEWORKINFO_ID = STUDENTHOMEWORKINFO_ID where STUDENTHOMEWORKINFO_ID = #{STUDENTHOMEWORKINFO_ID} select from where STUDENTHOMEWORKINFO_ID = #{STUDENTHOMEWORKINFO_ID} select from where 1=1 and ( ) select from delete from where STUDENTHOMEWORKINFO_ID in #{item}