对于在Toad中快速运行的同一查询，Power BI运行非常慢

Question

我正在尝试将数据导入power bi，这使我得到的数据如下PL / SQL：

SELECT
  A.WINDOW,
  A.ROUTE,
  A.WEBORDERNUM,
  min(A.SCANDATE)
FROM
  SCANNING A
WHERE
  (
   A.CARTONSTATUS  IN  ( 'DELIVERED','REFUSED' )
   AND
   ( A.SCANDATE  >TRUNC(SYSDATE)+1/24)
  )
 Group by
 A.WINDOW,
 A.ROUTE,
 A.WEBORDERNUM

我将扫描表导入power bi中，并执行以下步骤：

然后我去查看Power BI中的sql语句，它看起来像这样：

select "rows"."WEBORDERNUM" as "WEBORDERNUM",
    "rows"."ROUTE" as "ROUTE",
    "rows"."WINDOW" as "WINDOW",
    min("rows"."SCANDATE") as "Min Scan"
from 
(
    select "_"."SCANDATE",
        "_"."WEBORDERNUM",
        "_"."ROUTE",
        "_"."WINDOW"
    from "AIRCLIC_PROD"."CARTONTRACKING" "_"
    where "_"."SCANDATE" > TO_TIMESTAMP('2018-06-26 01:00:00','YYYY-MM-DD HH24:MI:SS.FF') and ("_"."CARTONSTATUS" = 'DELIVERED' and "_"."CARTONSTATUS" is not null or "_"."CARTONSTATUS" = 'REFUSED' and "_"."CARTONSTATUS" is not null)
) "rows"
group by "WEBORDERNUM",
    "ROUTE",
    "WINDOW"

我认为它们是完全一样的，但是我不确定在power bi中导入数据要花费5分钟以上，但是当我在Toad中运行查询时，只需要1秒钟。

有人有主意吗？