Sql ORA-00904:；ACCUMDEPR“是：无效的标识符/选择查询

我对编写sql代码相当陌生，当我尝试运行下面的代码时，我得到了一个无效的标识符。我想知道我试图求和的字段是否给我带来了问题

我正在尝试获取一条记录，其中depr和accumdepr字段已添加在一起

我还想知道，您是否可以提供任何资源来帮助我更加了解这一点。任何帮助都将不胜感激

SELECT pa.BUSINESS_UNIT as bu,
pc.DEPTID as deptid,
pa.ASSET_ID as assetnumber,
pa.DESCR as descr,
pa.IN_SERVICE_DT as inservdate,
pc.COST as assetcost,
pb.METHOD as deprecmeth,
pb.LIFE as assetlife,
Sum(pdr.DEPR) as depr,
Sum(pdr.DEPR_YTD) as accumdepr
from PS_ASSET pa
inner join PS_COST pc on pc.ASSET_ID = pa.ASSET_ID
inner join PS_BOOK pb on pb.ASSET_ID= pa.ASSET_ID
inner join PS_DEPR_RPT pdr on pdr.ASSET_ID= pa.ASSET_ID

where pa.BUSINESS_UNIT = 'A0057'
and pa.ASSET_ID = '000000000020'
and pdr.FISCAL_YEAR = '2014'
and pdr.ACCOUNTING_PERIOD = '11'

group by bu,
deptid,
assetnumber,
descr,
inservicedate,
assetcost, 
deprecmeth,
assetlife,
depr,
accumdepr;

---

您不能引用在select中定义的列的别名，因此请这样做。此外，您不能对组函数进行分组，因此accumdepr创建的组一开始就没有多大意义

SELECT pa.BUSINESS_UNIT as bu,
pc.DEPTID as deptid,
pa.ASSET_ID as assetnumber,
pa.DESCR as descr,
pa.IN_SERVICE_DT as inservdate,
pc.COST as assetcost,
pb.METHOD as deprecmeth,
pb.LIFE as assetlife,
Sum(pdr.DEPR) as depr,
Sum(pdr.DEPR_YTD) as accumdepr
from PS_ASSET pa
inner join PS_COST pc on pc.ASSET_ID = pa.ASSET_ID
inner join PS_BOOK pb on pb.ASSET_ID= pa.ASSET_ID
inner join PS_DEPR_RPT pdr on pdr.ASSET_ID= pa.ASSET_ID

where pa.BUSINESS_UNIT = 'A0057'
and pa.ASSET_ID = '000000000020'
and pdr.FISCAL_YEAR = '2014'
and pdr.ACCOUNTING_PERIOD = '11'

group by
pa.BUSINESS_UNIT,
pc.DEPTID,
pa.ASSET_ID,
pa.DESCR,
pa.IN_SERVICE_DT,
pc.COST,
pb.METHOD,
pb.LIFE;

---

GROUPBY子句应仅包括用于标识属于同一组的行的列。由于您对pdr.DEPR和pdr.DEPR_YTD之和感兴趣，我假设您对具有相同bu、deptid、资产编号、descr、inservciedate、asstecost、deprecmeth和资产寿命的行的总和感兴趣。求和（dpr.DEPR）和求和（dpr.DEPR_YTD）就是您要查找的计算

要解决此问题，您需要删除组中的最后两个条目，如下所示：

GROUP BY bu,
         deptid,
         assetnumber,
         descr,
         inservicedate,
         assetcost, 
         deprecmeth,
         assetlife;

---

谢谢你的帮助。那是为了我。我可以看出这将是一个缓慢的学习过程。再次感谢。我感谢你在这方面的帮助。只要学习sql，我肯定一开始会很慢。再次谢谢你，我才刚开始呢。你说的DDL是什么意思？