oracle有序的合并函数,Oracle 合并连续日期时间段

表结构:

表数据：

查询结果：

SQL代码:

with temp as ( select t.xmbh,

t.ygbh,

t.bjje,

t.ssrq,

lead(ssrq, 1, ssrq) over(partition by xmbh order by ssrq) next_ssrq,

lag(ssrq, 1, ssrq) over(partition by xmbh order by ssrq) prev_ssrq,

lead(t.bjje) over(partition by xmbh order by ssrq) next_bjje,

lag(t.bjje) over(partition by xmbh order by ssrq) prev_bjje

from ( select 1 as resource_id,'TEMP1' as xmbh, &