SQL + ASP.Net高效分頁

Question

我的分頁方法效率不高，因爲它會調用相同的查詢兩次，因此會加倍查詢時間。我目前調用1個查詢，連同5個表格一起使用XML搜索查詢，以允許從ASP.net傳遞列表。然後，我需要調用完全相同的查詢，除了用Count（row）來獲取記錄數量

爲例（我已刪除的比特，使其更易於閱讀）

主查詢：

WITH Entries AS (
    select row_number() over (order by DateReady desc) 
    as rownumber, Columns..., 

from quote 

join geolookup as Pickup on pickup.geoid = quote.pickupAddress 

where 
    quote.Active=1 
    and //More 
) 
select * from entries 
where Rownumber between (@pageindex - 1) * @pagesize + 1 and @pageIndex * @pageSize 
end 

統計查詢：

select count(rowID)   
from quote 

join geolookup as Pickup on pickup.geoid = quote.pickupAddress 

where 
    quote.Active=1 
    and //More 
) 

Answer 1

你可以選擇你的大查詢的結果到一個臨時表，那麼你就可以查詢該表中的行數和拔出你需要的行。

要做到這一點，添加（SELECT語句之後和之前的距離）

INTO #tmpTable 

然後引用您的表作爲#tmpTable

---

select row_number() over (order by DateReady desc) 
    as rownumber, Columns..., 
into #tmpTable 

from quote 

join geolookup as Pickup on pickup.geoid = quote.pickupAddress 

where 
    quote.Active=1 
    and //More 
) 

SELECT @Count = COUNT(*) FROM #tmpTable 

select * from #tmpTable 
where Rownumber between (@pageindex - 1) * @pagesize + 1 and @pageIndex * @pageSize 

Answer 2

您可以設置輸出參數將保存第一個查詢的行數。

你可以做類似

WITH Entries AS (
    select row_number() over (order by DateReady desc) 
    as rownumber, Columns..., 

from quote 

join geolookup as Pickup on pickup.geoid = quote.pickupAddress 

where 
    quote.Active=1 
    and //More 
) 

select @rowcount = max(rownumber) from entries 

select * from entries 
where Rownumber between (@pageindex - 1) * @pagesize + 1 and @pageIndex * @pageSize 

希望這有助於