摘要: select * from ( select row_number() over(partition by eci order by eci) rn ,eci, gridx,gridy from 表明 where p_day=to_date('2017-12-20','yyyy-MM-dd') )t where rn =1 阅读全文
posted @ 2018-01-21 15:15 桎梏110 阅读(246) 评论(0) 推荐(0)