sqlserver 2005新功能_sql

概述2005 ? Top N declare @n intset @n=8select top(@n) * from tablename ? 分页 1 select * from( 2 select OrderId, Freight, ROW_NUMBER() OVER(order by Freight) as row from Orders 3 ) a 2005 ? top N

declare @n intset @n=8select top(@n) * from tablename

? 分页

1 select * from(  2     select OrderID,Freight,ROW_NUMBER() OVER(order by Freight) as row from Orders  3 ) a  4 where row between 20 and 30

? 排名

1 select * from(  2     select OrderID,RANK() OVER(order by Freight) as rank from Orders  3 ) a  4 where rank between 20 and 30

? try ... catch

SET XACT_ABORT ON  -- 打开 try功能  BEGIN TRY      begin tran          insert into Orders(CustomerID) values(-1)      commit tran      print ‘commited‘  END TRY  BEGIN CATCH      rollback         print ‘rolled back‘  END CATCH

? 公用表表达式

 1 WITH ProductCTE([categoryID],[ProductsCount]) 2  3 AS 4  5 ( 6  7     SELECT [categoryID],COUNT(1) 8  9     FROM [dbo].[Product]10 11     GROUP BY [categoryID]12 13 )14 15  16 17 SELECT c.[categoryID],c.[categoryname],cte.[ProductsCount]18 19 FROM [dbo].[category] c20 21 INNER JOIN ProductCTE cte22 23     ON c.[categoryID] = cte.[categoryID]24 25 ORDER BY cte.[ProductsCount]26 27 --关联CTE28 29 WITH categoryCTE30 AS31 (32     SELECT * FROM [dbo].[category]33 ),ProductCTE34 AS35 (36     SELECT p.*,cte.[categoryname] FROM [dbo].[Product] p37     INNER JOIN categoryCTE cte38         ON p.[categoryID] = cte.[categoryID]39 )40  41 SELECT * FROM ProductCTE42 ---------------------------------------------------------------------------递归CTE：递归公用表表达式是在CTE内的语句中调用其自身的CTE。43 44 WITH cte([categoryID],[categoryname],[ParentID],[Level])45 AS46 (47     -- 查询语句48     SELECT [categoryID],1 AS [Level] FROM [dbo].[category]49     WHERE [ParentID] IS NulL50     UNION ALL51     -- 递归语句52     SELECT c.[categoryID],c.[ParentID],cte.[Level] + 153     FROM [dbo].[category] c54     INNER JOIN cte55         ON c.[categoryID] = cte.[ParentID]56 )57  58 SELECT [categoryID],[Level] FROM cte59

限制递归层次、Where过滤递归结果数据层次

参考：https://www.cnblogs.com/libingql/p/4461715.html

 一段展BOM的代码,以微软示例数据库AdventureWorks的 Production.BillOfMaterials表为例，在计算用量的时候，要用数据转换，否则会出现“定位点类型和递归部分的类型不匹配”的问题。

;with bom as(    select b.ProductAssemblyID,b.ComponentID,b.BOMLevel,b.PerAssemblyQty,cast(b.PerAssemblyQty as decimal(10,6)) qty,ROW_NUMBER() over(order by getdate()) od        from Production.BillOfMaterials b where b.ComponentID=767    union all    select b.ProductAssemblyID,cast(b.PerAssemblyQty*bom.qty as decimal(10,6)),ROW_NUMBER() over(order by getdate())+ bom.od*100        from Production.BillOfMaterials b join bom on b.ProductAssemblyID=bom.ComponentID)select p.ProductNumber ‘物料编码‘,replicate(‘..‘,bom.bomlevel)+ p.name ‘物料名称‘,bom.BOMLevel ‘层级‘,bom.PerAssemblyQty ‘BOM用量‘,bom.qty ‘累计用量‘,bom.od ‘排序‘ from bom join Production.Product p on bom.ComponentID=p.ProductIDorder by rtrim(od)

? 直接发布Web Service

? 想要把store procedure变成Web Service就用这个吧，.NET,IIS都不需要，通过windows 2003的http Protocol Stack直接发布WebService,用这个功能需要windows 2003 sp1

 1    --DataSet CustOrdersOrders(string customerID)   2 CREATE ENDPOINT Orders_Endpoint   3 state=started   4 as http(   5     path=‘/sql/orders‘, 6     AUTHENTICATION=(INTEGRATED), 7     ports=(clear)   8 )   9 for soap(  10     WebMethod ‘CustOrdersOrders‘(    11         name=‘northwind.dbo.CustOrdersOrders‘  12     ),13      14     wsdl=default,15     database=‘northwind‘,16     namespace=‘http://mysite.org/‘  17 )

? Web Service就发布好了，敲入http://localhost/sql/orders?wsdl得到wsdl

? 在http通讯时，例子代码使用的是windows集成验证。
给个客户端例子。

private voID button1_Click(object sender,EventArgs e){    localhost.Orders_Endpoint endp = new localhost.Orders_Endpoint();    endp.Credentials = System.Net.CredentialCache.DefaultCredentials;    object[] r = endp.CustOrdersOrders("VINET");    DataSet ds = new DataSet();    foreach(object o in r)        if (o is DataSet) ds = (DataSet)o;    dataGrIDVIEw1.DataSource = ds.tables[0];            }