lid, uid, create_time, last_update_time delete from lecture_user where lid = #{lid,jdbcType=BIGINT} and uid = #{uid,jdbcType=VARCHAR} insert into lecture_user (lid, uid, create_time, last_update_time) values (#{lid,jdbcType=BIGINT}, #{uid,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP}, #{lastUpdateTime,jdbcType=TIMESTAMP}) insert into lecture_user lid, uid, create_time, last_update_time, #{lid,jdbcType=BIGINT}, #{uid,jdbcType=VARCHAR}, #{createTime,jdbcType=TIMESTAMP}, #{lastUpdateTime,jdbcType=TIMESTAMP}, update lecture_user create_time = #{createTime,jdbcType=TIMESTAMP}, last_update_time = #{lastUpdateTime,jdbcType=TIMESTAMP}, where lid = #{lid,jdbcType=BIGINT} and uid = #{uid,jdbcType=VARCHAR} update lecture_user set create_time = #{createTime,jdbcType=TIMESTAMP}, last_update_time = #{lastUpdateTime,jdbcType=TIMESTAMP} where lid = #{lid,jdbcType=BIGINT} and uid = #{uid,jdbcType=VARCHAR} delete from lecture_user where id in #{item}