在SQL Server 2008中引入了hierarchyid来处理树状结构。下面简单就以AdventureWorks(无hierarchyid)和AdventureWorks2008(有hierarchyid)里的HumanResources.Employee为例，来说明一下在新的hierarchyid中如何进行flat化的dimension抽取。
AdventureWorks是微软为SQL Server提供的数据库虚拟案例。
AdventureWorks中所要的结果集代码如下:
select L4.NationalIDNumber, L4.Title, L3.NationalIDNumber, L3.Title, L2.NationalIDNumber, L2.Title, L1.NationalIDNumber, L1.Title, L0.NationalIDNumber, L0.Title
from HumanResources.Employee L4, HumanResources.Employee L3, HumanResources.Employee L2, HumanResources.Employee L1, HumanResources.Employee L0
where L4.ManagerID = L3.EmployeeID and L3.ManagerID = L2.EmployeeID and L2.ManagerID = L1.EmployeeID and L1.ManagerID = L0.EmployeeID
AdventureWorks2008中的代码如下:
select L4.NationalIDNumber, L4.JobTitle, L3.NationalIDNumber, L3.JobTitle, L2.NationalIDNumber, L2.JobTitle, L1.NationalIDNumber, L1.JobTitle, L0.NationalIDNumber, L0.JobTitle
from HumanResources.Employee L ......
1。企业管理器
打开你建有外键的表－－右击表－－设计表－－在上方点开’管理约束‘－－将级连删除和级连更新的沟打上就可以了
2。查询分析器
alter table sc
add
constraint forei foreign key(sno)
REFERENCES student(sno)
ON DELETE CASCADE
ON UPDATE CASCADE
ON DELETE {CASCADE | NO ACTION}
指定当表中被更改的行具有引用关系，并且该行所引用的行从父表中删除时，要对被更改行采取的操作。默认设置为 NO ACTION。
如果指定 CASCADE，则从父表中删除被引用行时，也将从引用表中删除引用行。如果指定 NO ACTION，SQL Server 将产生一个错 ......
本文来自：http://hi.baidu.com/darkroot/blog/item/7b74be2cf06d76e78b139903.html
declare @tbName nvarchar(500)
declare @ct int
declare @csql nvarchar(500)
declare #tb cursor for SELECT OBJECT_NAME (id) As TableName from sysobjects WHERE xtype = 'U' AND OBJECTPROPERTY (id, 'IsMSShipped') = 0
open #tb
fetch next from #tb into @tbName
while @@fetch_status=0
begin
set @csql = N'Select @ct= Count(*) from ' + @tbName
Exec dbo.sp_executesql @csql,N'@ct int output',@ct output
Print @tbName + '---' + Cast(@ct As nvarchar(500))
fetch next from #tb into @tbName
end
close ......
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.AbstractTableModel;
public class PageTest extends JFrame implements MouseListener,ActionListener{
public final String[] columnHeaders = {"ID(编号)","Nmae(姓名)","Sex(性别)" };
JTable ab;
JLabel ab1,ab2,ab3,ab4;
JTextField test1,test2,test3,test01,test02,test03,test04;
JButton bu,bu1,bu01,bu02,bu03,bu04;
JScrollPane jsp;
public String[][] str = null;
ShuZhu sz = new ShuZhu();
int y =0;
&nbs ......
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.AbstractTableModel;
public class PageTest extends JFrame implements MouseListener,ActionListener{
public final String[] columnHeaders = {"ID(编号)","Nmae(姓名)","Sex(性别)" };
JTable ab;
JLabel ab1,ab2,ab3,ab4;
JTextField test1,test2,test3,test01,test02,test03,test04;
JButton bu,bu1,bu01,bu02,bu03,bu04;
JScrollPane jsp;
public String[][] str = null;
ShuZhu sz = new ShuZhu();
int y =0;
&nbs ......
我们知道，在SQL SERVER中有Bit, Float, Int , Char等等一系列的数据类型，而在DOT NET中，有Boolean,Double,Int 32,String等数据类型与之对应。 也就是说，数据库中的数据类型与DOT NET的数据类型之间，有一个映射关系。下表是他们的映射关系：
dot net中的数据类型 Sql server 中的数据类型
Boolean Bit
Byte ......
select upper(name) from syscolumns
where id =any
(
select Id from sysobjects where name='tb_city'
)
lower
select row_number() over(order by firmid) from dbo.tb_BuildingMaterial
生成 自增 123
select rank() over(order by firmid) from dbo.tb_BuildingMaterial
生成自增123 根据排序的字段 重复的 不自增 若 3条记录的两个字段是重复的 则 结果是 1 1 3
select DENSE_RANK() over(order by firmid) from dbo.tb_BuildingMaterial
生成自增123 根据排序的字段 重复的 不自增 若 3条记录的两个字段是重复的 则 结果是 1 1 2
select NTILE(num) over(order by firmid) from dbo.tb_BuildingMaterial
生成自增123 根据排序的字段 重复的 不自增 且自增的序列 小于num 若 4条记录的两个字段是重复的 且num=2 则 结果是 1 1 22 ......
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