自联接与WHERE子句失败

我正在使用ApacheDrill使用自引用联接对csv文件中的YTD(迄今为止)进行求和。(简称)查询是

select
  ... fields from table a ...
  a.PeriodAmount,
  sum(cast(b.PeriodAmount as dec(18,3))) as YTDAmount
from dfs.`/home/foo/data/a.csv` a
  left join dfs.`/home/foo/data/a.csv` b
on
  ... join-conditions ...
*** where a.Year = '2018' ***
group by
  ... group-conditions ...
order by
  ... order-conditions ...
;

查询工作 没有 WHERE子句。当WHERE子句是 包括 在同一个数据集上,我得到以下错误:

Error: UNSUPPORTED_OPERATION ERROR: This query cannot be planned possibly due to either a cartesian join or an inequality join
[Error Id: b62e6b63-eda7-4a52-8f95-2499a1f5c278 on foo:31010] (state=,code=0)

我可以通过删除WHERE子句来规避错误,并改为执行子查询:

from (select * from dfs.`/home/foo/data/a.csv` where Year = '2017') a
  from (select * from dfs.`/home/foo/data/a.csv` where Year = '2017') b

但我不确定这是正确的方法。它使查询更容易出错,因为同一条件必须应用于多个子查询,而不是将其作为自然所属的WHERE子句。

是否可以重写此自联接以维护where子句?

这是在Ubuntu16.04上,在Win10上使用wsl,ApacheDrill是ver。1.13。

完成(处理钻取)查询:

select
  a.Dep_id,
  a.Dep,
  substr(a.Post_id, 1, 4) as Kap,
  a.Post_id,
  substr(a.Post_id, 5, 2) as Post,
  a.Art_id,
  a.Art,
  a.V_id,
  a.Reg,
  a.Dep_V_id,
  a.Dep_V,
  concat(substr(a.Periode, 1, 4), '-', substr(a.Periode, 5, 2), '-15') as PeriodDate,
  a.Period,
  a.Year,
  a.PeriodAmount,
  sum(cast(b.PeriodAmount as dec(18,3))) as YTDAmount
from dfs.`/home/foo/data/a.csv` a
  left join dfs.`/home/foo/data/a.csv` b
on
  a.Dep_id = b.Dep_id
  and a.Post_id = b.Post_id
  and a.Post_id is not null
  and a.Art_id = b.Art_id
  and a.V_id = b.V_id
  and a.Reg = b.Reg
  and a.Dep_V_id = b.Dep_V_id
  and a.Dep_id = b.Dep_id
  and b.Period <= a.Period
  and a.Year = b.Year
  and a.Post_id = b.Post_id
  and a.Art_id = b.Art_id
where a.Year in ('2018') and b.Year in (a.Year)
group by
  a.Dep_id,
  a.Dep,
  a.Post_id,
  a.Art_id,
  a.Art,
  a.V_id,
  a.Reg,
  a.Dep_V_id,
  a.Dep_V,
  a.Dep_id,
  a.Period,
  a.Year,
  a.PeriodAmount
order by
  a.Year,
  a.Dep_id,
  a.Post_id,
  a.Art_id,
  a.V_id,
  a.Reg,
  a.Dep_V_id,
  a.Dep_id,
  a.Period,
  a.PeriodAmount
;