update t1,t2

UPDATE crawl_weibo_data t1, lz_temp_channel t2 SET t1.channel_unique_id = t2.channel_unique_id WHERE t1.channel=t2.channel AND t1.pub_time > 1551369600000 AND t1.pub_time < 1556640000000 AND t1.channel_unique_id = 'DMR';