t.ans_id as ansId, t.que_id as queId, t.answer as answer, t.is_use as isUse, t.is_right as isRight t.que_id = #{queId} AND t.answer = #{answer} AND t.is_use = #{isUse} AND t.is_right = #{isRight} AND select from t_answer t where t.ans_id=#{ansId} select version from t_answer where ans_id=#{ansId} SELECT from t_answer t SELECT from t_answer t SELECT from t_answer t insert into t_answer ans_id, que_id, answer, is_use, is_right, sort, #{ansId}, #{queId}, #{answer}, #{isUse}, #{isRight}, #{sort}, update t_answer que_id=#{queId}, answer=#{answer}, is_use=#{isUse}, is_right=#{isRight}, where ans_id=#{ansId} update t_answer SET is_use = 0 where ans_id=#{ansId} delete from t_answer where ans_id=#{ansId} delete from t_answer where que_id = #{queId}