SQL + ASP.Net高效分页

Question

我的分页方法效率不高，因为它会调用相同的查询两次，因此会加倍查询时间。我目前调用1个查询，连同5个表格一起使用XML搜索查询，以允许从ASP.net传递列表。然后，我需要调用完全相同的查询，除了用Count（row）来获取记录数量

为例（我已删除的比特，使其更易于阅读）

主查询：

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 

统计查询：

select count(rowID)   
from quote 

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

where 
    quote.Active=1 
    and //More 
) 

Answer 1

你可以选择你的大查询的结果到一个临时表，那么你就可以查询该表中的行数和拔出你需要的行。

要做到这一点，添加（SELECT语句之后和之前的距离）

INTO #tmpTable 

然后引用您的表作为#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

您可以设置输出参数将保存第一个查询的行数。

你可以做类似

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 

希望这有助于