改善SQL Anywhere查詢

Question

我正在使用SQL Anywhere作為數據庫。

我有兩個表SALES DETAIL (POSDETAIL)和Inventory Adjusted表（ AdjustInventory ），並創建和查詢以顯示銷售和浪費/調整后的查詢。

輸出應該是這樣的

Product   SalesQty  Value    WastageQty    Value
------------------------------------------------

銷售數量將來自POSDETAIL表，而WastageQty將來自AdjustInventory

POSDETAIL共有435625條記錄， AdjustInventory共有183528條記錄。

我在下面的查詢中設計了它，可以根據需要提供完善的查詢，但是問題是查詢非常慢，幾乎需要10到15毫秒才能顯示任何日期范圍內的任何特定數據。

此查詢是需要優化的，此處是調整。

select    
    p.OrderDate, p.ProductId, p.SalesQty,
    f.WastedQty / p.SalesQty as WastedQty,
    p.NetCost, p.EachCost
from
    (select 
         POSDETAIL.PRODNUM as ProductId,
         DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd') as OrderDate, 
         POSDETAIL.NETCOSTEACH as NetCost,POSDETAIL.COSTEACH as EachCost,
         SUM(POSDETAIL.QUAN) as SalesQty
     from 
         DBA.POSDETAIL
     group by 
         POSDETAIL.PRODNUM, POSDETAIL.NETCOSTEACH, POSDETAIL.COSTEACH, 
         DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd')
) as p (ProductId, OrderDate, NetCost, EachCost, SalesQty) 
left outer join
    (select 
         DBA.AdjustInventory.INVENNUM as ProductId,
         DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd') as OrderDate,
         SUM(AdjustInventory.ADJUSTUNITS) as WastedQty
     from 
         DBA.POSDETAIL
     join 
         DBA.AdjustInventory on DBA.POSDETAIL.PRODNUM = DBA.AdjustInventory.INVENNUM
                             and DBA.AdjustInventory.AdjustType = 9 
                             and DATEFORMAT(DBA.AdjustInventory.AdjustTime,'yyyy/mm/dd') = DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd')
     group by 
         DBA.AdjustInventory.INVENNUM, DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd')
    ) as f(ProductId, OrderDate, WastedQty) on p.ProductId = f.ProductId and p.OrderDate = f.OrderDate;

請幫忙

Answer 1

好的，這可能是您的問題。 切勿在嵌套選擇中分組。 1.拉出選擇，使其成為臨時表。
2.索引臨時表3.將臨時表連接到外部查詢。

您應該可以在這里執行兩次，這確實有幫助。

Answer 2

not 100% sure of syntax for SQL

select 
         POSDETAIL.PRODNUM as ProductId,
         DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd') as OrderDate, 
         POSDETAIL.NETCOSTEACH as NetCost,POSDETAIL.COSTEACH as EachCost,
         SUM(POSDETAIL.QUAN) as SalesQty
     from 
         DBA.POSDETAIL
     into #P
     group by 
         POSDETAIL.PRODNUM, POSDETAIL.NETCOSTEACH, POSDETAIL.COSTEACH, 
         DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd')

select 
         DBA.AdjustInventory.INVENNUM as ProductId,
         DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd') as OrderDate,
         SUM(AdjustInventory.ADJUSTUNITS) as WastedQty
     from 
         DBA.POSDETAIL
     Into #F
     join 
         DBA.AdjustInventory on DBA.POSDETAIL.PRODNUM = DBA.AdjustInventory.INVENNUM
                             and DBA.AdjustInventory.AdjustType = 9 
                             and DATEFORMAT(DBA.AdjustInventory.AdjustTime,'yyyy/mm/dd') = DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd')
     group by 
         DBA.AdjustInventory.INVENNUM, DATEFORMAT(POSDETAIL.TIMEORD,'yyyy/mm/dd')




select    
    p.OrderDate, p.ProductId, p.SalesQty,
    f.WastedQty / p.SalesQty as WastedQty,
    p.NetCost, p.EachCost
from #p (ProductId, OrderDate, NetCost, EachCost, SalesQty)
Left outer Join #f
     on p.ProductId = f.ProductId and p.OrderDate = f.OrderDate;

自從我使用SQL Anywhere以來已有16年了，很抱歉，這是偽代碼