2018年12月29日
去重记录并做成拉链表
摘要： with tmp1 as ( select t1.day ,t1.value ,row_number() over(order by t1.day) as rn from ( select '2015-01-01' as day, 1 as value union all select '201... 阅读全文
posted @ 2018-12-29 14:57 chenzechao 阅读(689) 评论(0) 推荐(0)