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SELECT * FROM (SELECT ROW_NUMBER() OVER(ORDER BY pagerrank0 DESC, case when datediff(day,releaseTime,getdate())=0 then 1 else 0 end desc,case when ISNUMERIC(price)=1 then '3' when price<>'' then '2' else '1' end desc ,releaseTime desc,productid desc) AS rownum, * FROM View_product WHERE isPassAudit='true' and pagerRank0>0 ) AS D
WHERE isPassAudit='true' and pagerRank0>0 AND rownum BETWEEN 17 AND 32 ORDER BY pagerrank0 DESC, case when datediff(day,releaseTime,getdate())=0 then 1 else 0 end desc,case when ISNUMERIC(price)=1 then '3' when price<>'' then '2' else '1' end desc ,releaseTime desc,productid desc
CREATE VIEW [dbo].[View_Product]
WITH SCHEMABINDING
AS
SELECT dbo.tb_Product.productId, dbo.tb_Product.companyId, dbo.tb_Product.productGroupId, dbo.tb_Product.productName, dbo.tb_Product.productPicture,
dbo.tb_Product.brand, dbo.tb_Product.keyWords, dbo.tb_Product.mainSpecification, dbo.tb_Product.price, dbo.tb_Product.priceUnitName,
dbo.tb_Product.measureUnitName, dbo.tb_Product.priceType, dbo.tb_Product.priceTypeCityName, dbo.tb_Product.priceValidDays,
dbo.tb_Product.supplyAbility, dbo.tb_Product.supplyAbilityMeasureUnit, dbo.tb_Product.netWeight, dbo.tb_Product.netWeightUnitName,
dbo.tb_Product.netWeightMeasureName, dbo.tb_Product.deliveryDays, dbo.tb_Product.packing, dbo.tb_Product.minOrder,
dbo.tb_Product.minOrderUnitName, dbo.tb_Product.payment, dbo.tb_Product.detailSpecification, dbo.tb_Product.productPriority, dbo.tb_Product.isAdv,
dbo.tb_Product.clickedCount, dbo.tb_Product.releaseTime, dbo.tb_Product.isPassAudit, dbo.tb_Product.pagerRank0,
dbo.tb_Seller.companyChineseName, dbo.tb_Seller.companyName, dbo.tb_Product.Model, dbo.tb_Product.displayRank
FROM dbo.tb_Product INNER JOIN
dbo.tb_SellerCompany ON dbo.tb_Product.companyId = dbo.tb_SellerCompany.companyId INNER JOIN
dbo.tb_Seller ON dbo.tb_SellerCompany.sellerId = dbo.tb_Seller.sellerId
GO
EXEC sys.sp_addextendedproperty @name=N'MS_DiagramPane1', @value=N'[0E232FF0-B466-11cf-A24F-00AA00A3EFFF, 1.00]
Begin DesignProperties =
Begin PaneConfigurations =
Begin PaneConfiguration = 0
NumPanes = 4
Configuration = "(H (1[47] 4[32] 2[15] 3) )"
End
Begin PaneConfiguration = 1
NumPanes = 3
Configuration = "(H (1 [50] 4 [25] 3))"
End
Begin PaneConfiguration = 2
NumPanes = 3
Configuration = "(H (1 [50] 2 [25] 3))"
End
Begin PaneConfiguration = 3
NumPanes = 3
Configuration = "(H (4 [30] 2 [40] 3))"
End
Begin PaneConfiguration = 4
NumPanes = 2
Configuration = "(H (1 [56] 3))"
End
Begin PaneConfiguration = 5
NumPanes = 2
Configuration = "(H (2 [66] 3))"
End
Begin PaneConfiguration = 6
NumPanes = 2
Configuration = "(H (4 [50] 3))"
End
Begin PaneConfiguration = 7
NumPanes = 1
Configuration = "(V (3))"
End
Begin PaneConfiguration = 8
NumPanes = 3
Configuration = "(H (1[56] 4[18] 2) )"
End
Begin PaneConfiguration = 9
NumPanes = 2
Configuration = "(H (1 [75] 4))"
End
Begin PaneConfiguration = 10
NumPanes = 2
Configuration = "(H (1[66] 2) )"
End
Begin PaneConfiguration = 11
NumPanes = 2
Configuration = "(H (4 [60] 2))"
End
Begin PaneConfiguration = 12
NumPanes = 1
Configuration = "(H (1) )"
End
Begin PaneConfiguration = 13
NumPanes = 1
Configuration = "(V (4))"
End
Begin PaneConfiguration = 14
NumPanes = 1
Configuration = "(V (2))"
End
ActivePaneConfig = 0
End
Begin DiagramPane =
Begin Origin =
Top = 0
Left = 0
End
Begin Tables =
Begin Table = "tb_Product"
Begin Extent =
Top = 6
Left = 38
Bottom = 121
Right = 239
End
DisplayFlags = 280
TopColumn = 4
End
Begin Table = "tb_SellerCompany"
Begin Extent =
Top = 6
Left = 277
Bottom = 159
Right = 484
End
DisplayFlags = 280
TopColumn = 0
End
Begin Table = "tb_Seller"
Begin Extent =
Top = 11
Left = 587
Bottom = 126
Right = 776
End
DisplayFlags = 280
TopColumn = 8
End
End
End
Begin SQLPane =
End
Begin DataPane =
Begin ParameterDefaults = ""
End
Begin ColumnWidths = 9
Width = 284
Width = 1500
Width = 1500
Width = 1500
Width = 1500
Width = 1500
Width = 1500
Width = 1500
Width = 1500
End
End
Begin CriteriaPane =
Begin ColumnWidths = 11
Column = 3495
Alias = 900
Table = 1170
Output = 720
Append = 1400
NewValue = 1170
SortType = 1350
SortOrder = 1410
GroupBy = 1350
Filter = 1350
Or = 1350
Or = 1350
Or = 1350
End
End
End
' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'VIEW',@level1name=N'View_Product'
GO
EXEC sys.sp_addextendedproperty @name=N'MS_DiagramPaneCount', @value=1 , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'VIEW',@level1name=N'View_Product'
SELECT *
FROM (SELECT ROW_NUMBER() OVER(ORDER BY pagerrank0 desc,releasetime desc) AS rownum,
productid,ispassaudit,pagerrank0,releaseTime
FROM View_product WHERE isPassAudit='true' and pagerRank0>0 ) AS D
WHERE isPassAudit='true' and pagerRank0>0 AND rownum BETWEEN 47985 AND 48000 ORDER BY pagerrank0 desc,releasetime desc
CREATE CLUSTERED INDEX INDEX_ASC ON View_product(releaseTime DESC,productid DESC)楼主改成这样试试,我这样测试的时候,有快很多,不过没按一列时查询快,索引100%
在计算列和视图上创建索引时的考虑
在 SQL Server 2000 中,还可以在计算列和视图上创建索引。在视图上创建唯一聚集索引可以提高查询性能,因为视图存储在数据库中的方式与具有聚集索引的表的存储方式相同。
UNIQUE 或 PRIMARY KEY 只要满足所有索引条件,就可以包含计算列。具体说来就是,计算列必须具有确定性、必须精确,且不能包含 text、ntext 或 image 列。有关确定性的更多信息,请参见确定性函数和非确定性函数。
在计算列或视图上创建索引可能导致前面产生的 INSERT 或 UPDATE 操作失败。当计算列导致算术错误时可能产生这样的失败。例如,虽然下表中的计算列 c 将导致算术错误,但是 INSERT 语句仍有效:
CREATE TABLE t1 (a int, b int, c AS a/b)
GO
INSERT INTO t1 VALUES ('1', '0')
GO
相反,如果创建表之后在计算列 c 上创建索引,则上述 INSERT 语句将失败。
CREATE TABLE t1 (a int, b int, c AS a/b)
GO
CREATE UNIQUE CLUSTERED INDEX Idx1 ON t1.c
GO
INSERT INTO t1 VALUES ('1', '0')
GO
在通过数字或 float 表达式定义的视图上使用索引所得到的查询结果,可能不同于不在视图上使用索引的类似查询所得到的结果。这种差异可能是由对基础表进行 INSERT、DELETE 或 UPDATE 操作时的舍入错误引起的。
若要防止 SQL Server 使用索引视图,请在查询中包含 OPTION (EXPAND VIEWS) 提示。此外,任何所列选项设置不正确均会阻止优化程序使用视图上的索引。有关 OPTION (EXPAND VIEWS) 提示的更多信息,请参见 SELECT。
对索引视图的限制
定义索引视图的 SELECT 语句不得包含 TOP、DISTINCT、COMPUTE、HAVING 和 UNION 关键字。也不能包含子查询。
SELECT 列表中不得包含星号 (*)、'table.*' 通配符列表、DISTINCT、COUNT(*)、COUNT(<expression>)、基表中的计算列和标量聚合。
非聚合 SELECT 列表中不能包含表达式。聚合 SELECT 列表(包含 GROUP BY 的查询)中可能包含 SUM 和 COUNT_BIG(<expression>);它一定包含 COUNT_BIG(*)。不允许有其它聚合函数(MIN、MAX、STDEV,...)。
使用 AVG 的复杂聚合无法参与索引视图的 SELECT 列表。不过,如果查询使用这样的聚合,则优化程序将能使用该索引视图,用 SUM 和 COUNT_BIG 的简单聚合组合代替 AVG。
若某列是从取值为 float 数据类型或使用 float 表达式进行取值的表达式得到的,则不能作为索引视图或表中计算列的索引键。这样的列被视为是不精确的。使用 COLUMNPROPERTY 函数决定特定计算列或视图中的列是否精确。
索引视图受限于以下的附加限制:
索引的创建者必须拥有表。所有表、视图和索引必须在同一数据库中创建。
定义索引视图的 SELECT 语句不得包含视图、行集函数、行内函数或派生表。同一物理表在该语句中只能出现一次。
在任何联接表中,均不允许进行 OUTER JOIN 操作。
搜索条件中不允许使用子查询或者 CONTAINS 或 FREETEXT 谓词。
如果视图定义包含 GROUP BY 子句,则视图的 SELECT 列表中必须包含所有分组依据列及 COUNT_BIG(*) 表达式。此外,CREATE UNIQUE CLUSTERED INDEX 子句中必须只包含这些列。
可以创建索引的视图的定义主体必须具有确定性且必须精确,这类似于计算列上的索引要求。请参见在计算列上创建索引。
权限
楼主参考一下SELECT *
FROM (SELECT ROW_NUMBER() OVER(ORDER BY pagerrank0 desc) AS rownum,
*
FROM View_product WHERE isPassAudit='true' and pagerRank0>0 ) AS D
WHERE isPassAudit='true' and pagerRank0>0 AND rownum BETWEEN 47985 AND 48000 ORDER BY pagerrank0 desc
SELECT *
FROM (SELECT ROW_NUMBER() OVER(ORDER BY pagerrank0 desc,releaseTime desc) AS rownum,
*
FROM View_product WHERE isPassAudit='true' and pagerRank0>0 ) AS D
WHERE isPassAudit='true' and pagerRank0>0 AND rownum BETWEEN 47985 AND 48000 ORDER BY pagerrank0 desc,releaseTime desc