如何在 Oracle SQL Developer 中拆分數據

Question

我有數據集

Period from  Customer Period 2
300            A        350
351            B        null

我想分割數據

Period from  Customer Period 2
300            A        NULL
301            A        NULL
302            A        NULL
303            A        NULL
304            A

Answer 1

您可以按如下方式使用hierarchy query ：

select column_value AS PERIOD_FROM,
       CUSTOMER,
       NULL AS PERIOD_TO
from YOUR_TABLE cross join
     table(cast(multiset(select level from dual
                         connect by level <= PERIOD_TO - PERIOD_FROM + 1
                        ) as sys.odcinumberlist))
order by column_value;