ID, USER_ID, CHANNEL_ID, ISVALID, CREATETIME, UPDATETIME, CREATORID, UPDATERID update user_channel_mapping set isvalid=0,updatetime=now(),updaterid=#{loginUserId} where user_id=#{userId} and isvalid=1 select from user_channel_mapping where user_id=#{userId} and channel_id=#{channelId} and isvalid=1 select channel_id from user_channel_mapping where user_id=#{userId} and isvalid=1