目前我有PLSQL代码来处理和计算数据。但问题是，这可以在没有PLSQL的情况下完成，即使用Oracle分析函数吗？
表包含计划和实际的数据快照，如下所示：
data_snap_id actual_dt planned_dt amount
------------ --------- --------- ------
1 2014-10-01 20.00
1 2014-10-02 10.00
1 2014-10-03 5.00
1 2014-10-04 10.00
1 2014-10-05 51.00
1 2014-10-06 10.00
1 2014-10-07 50.00
1 2014-10-08 15.00
1 2014-10-09 55.00
1 2014-10-10 100.00
2 2014-10-01 2014-10-01 25.00
2 2014-10-02 2014-10-02 5.00
2 2014-10-03 2014-10-03 15.00
2 2014-10-04 2014-10-04 15.00
2 2014-10-05 2014-10-05 5.00
2 2014-10-06 10.00
2 2014-10-07 50.00
2 2014-10-08 15.00
2 2014-10-09 55.00
2 2014-10-10 10.00
预期的查询输出如下：
action_date planned_amount actual_amount adds deletes
----------- -------------- ------------- ---- -------
2014-10-01 20.00 25.00 5.00 0.00
2014-10-02 10.00 5.00 0.00 5.00
2014-10-03 5.00 15.00 10.00 0.00
2014-10-04 10.00 15.00 5.00 0.00
2014-10-05 51.00 5.00 0.00 46.00
2014-10-06 5.00 0.00 0.00
2014-10-07 50.00 0.00 0.00
2014-10-08 15.00 0.00 0.00
2014-10-09 55.00 0.00 0.00
2014-10-10 100.00 0.00 90.00
答案 0 :(得分：2)
假设我正确理解了您的问题，您可以使用max和case的汇总查询来分隔您的计划金额和实际金额，然后使用子查询来获取您的添加和删除：
select action_date,
planned_amount,
actual_amount,
case when actual_amount-planned_amount < 0
then 0 else actual_amount-planned_amount end adds,
case when planned_amount-actual_amount < 0
then 0 else planned_amount-actual_amount end deletes
from (
select planned_dt action_date,
coalesce(max(case when actual_dt is null then amount end),0) planned_amount,
coalesce(max(case when actual_dt is not null then amount end),0) actual_amount
from yourtable
group by planned_dt
) t
order by action_date