tsql存儲過程轉換爲vb.net：臨時表會阻止嗎？

Question

我有一個存儲過程以下代碼：

select 
    i.ItemID 
    ,cast(p.PropertyValue as varchar(100)) as Custodian 
    ,cast(null as int) as PersonID 
    ,cast(null as bit) as Child 
into #c 
from tblItem as I 
inner join tblExternalData_Matches as m on I.ItemID = m.ItemID 
inner join tblItemExtendedProperties as p on I.ItemID = p.ItemID and p.[Application] = 'Import' and p.PropertyName = 'File Owner' 
where m.SourceID = @SourceID 

--Update PersonID for custodians we already have 
update c set 
c.PersonID = p.PersonID 
from #c as c 
inner join tblPerson as p on c.custodian = p.NameDisplay 

這將是在這個轉換的最內存高效的方法？ 我應該只是選擇結果到數據表類型？

Answer 1

DataTable並不是最有效的內存類型，但這一切都取決於您將如何處理數據。

查看DataReader以瞭解通過記錄集工作的最有效方法。

這是一個很棒的blog entry，它比較DataSets和DataReaders，並且可以幫助您決定走哪條路。