-1

次のクエリを使用して、Java Swing アプリケーションの 1 つでレコードを表示しています。このクエリの実行は非常に遅いです。パフォーマンスを向上させて結果を得る方法はありますか

より短い時間間隔でタスクを達成する方法はありますか?

select d.orderid,d.ordername,d.design,isnull(e.OrderQty,0) OrderQty
from 
(
select a.orderid,ordername,design
from filerorn a,ordersNew.dbo.orders b where a.orderid=b.orderid and sub_stage = 'G'
And a.id =@Id
)d
LEFT JOIN
(
select a.OrderId,a.Design,( case when b.ItemId is null 
then a.Qty else 1 end) -isnull(c.Qty,0) OrderQty from 
OrdersNew..ordersDesign a
left join
OrdersNew..OrdersBGTPDesign b
on a.OrderId=b.OrderId and  a.Design
COLLATE DATABASE_DEFAULT
=b.Design COLLATE DATABASE_DEFAULT and a.Sno=b.SNo
left join 
( select a.OrderId,Design,Qty from ExcludeDesign a
left join
dbo.ExcludeDesign_d b
on a.ID=b.ID

)c
on a.OrderId=c.OrderId and a.Design
COLLATE DATABASE_DEFAULT
=c.Design COLLATE DATABASE_DEFAULT and a.Sno=c.Sno

)e
ON d.OrderId=e.OrderId and d.Design COLLATE DATABASE_DEFAULT
=e.Design  COLLATE DATABASE_DEFAULT
and d.sno=e.Sno
and d.ItemId=e.ItemId 
order by d.ordername,d.design,d.sno,d.Itemid 
select d.orderid,d.ordername,d.design,isnull(e.OrderQty,0) OrderQty
from 
(
select a.orderid,ordername,design
from filerorn a,ordersNew.dbo.orders b where a.orderid=b.orderid and sub_stage = 'G'
And a.id =@Id
)d
LEFT JOIN
(
select a.OrderId,a.Design,( case when b.ItemId is null 
then a.Qty else 1 end) -isnull(c.Qty,0) OrderQty from 
OrdersNew..ordersDesign a
left join
OrdersNew..OrdersBGTPDesign b
on a.OrderId=b.OrderId and  a.Design
COLLATE DATABASE_DEFAULT
=b.Design COLLATE DATABASE_DEFAULT and a.Sno=b.SNo
left join 
( select a.OrderId,Design,Qty from ExcludeDesign a
left join
dbo.ExcludeDesign_d b
on a.ID=b.ID

)c
on a.OrderId=c.OrderId and a.Design
COLLATE DATABASE_DEFAULT
=c.Design COLLATE DATABASE_DEFAULT and a.Sno=c.Sno

)e
ON d.OrderId=e.OrderId and d.Design COLLATE DATABASE_DEFAULT
=e.Design  COLLATE DATABASE_DEFAULT
and d.sno=e.Sno
and d.ItemId=e.ItemId 
order by d.ordername,d.design,d.sno,d.Itemid

orderdesign と orders には何百万ものレコードがあります

Edit

15%

select a.orderid,ordername,design
from filerorn a,ordersNew.dbo.orders b where a.orderid=b.orderid and sub_stage = 'G'
And a.id =@Id

46%

select a.OrderId,a.Design,( case when b.ItemId is null 
then a.Qty else 1 end) -isnull(c.Qty,0) OrderQty from 
OrdersNew..ordersDesign a
left join
OrdersNew..OrdersBGTPDesign b
on a.OrderId=b.OrderId and  a.Design
4

1 に答える 1

1

ビューを作成していくつかのインデックスをポップして、検索を高速化するのはどうですか。または、ビューを行うのが嫌いな場合は、テーブルにインデックスを作成して検索を高速化します。

于 2012-11-28T09:15:25.383 に答える