模拟插入1000万条记录

 /**
   * 测试向一个表part中插入数据
   */
  public static void insertPart(){
	  Connection conn= getConnetion();
	  PreparedStatement pstmt=null;
	try {
		pstmt=conn.prepareStatement("insert into part(part_num,part_desc) values(?,?)");
		for(int i=0;i<10;i++){
			pstmt.setString(1, String.valueOf((int)(Math.random() * 1000)));
			pstmt.setString(2, "零件"+i);
			pstmt.executeUpdate();
		}
		System.out.println("插入成功！");
		
	} catch (SQLException e) {
		e.printStackTrace();
	}finally{
		try {
			pstmt.close();
			close(conn);
		} catch (SQLException e) {
			e.printStackTrace();
		}
		
		
	}
	  
  }
  
  /**
   * 测试向一个表vendor中插入数据
   */
  public static void insertVendor(){
	  Connection conn= getConnetion();
	  PreparedStatement pstmt=null;
	try {
		pstmt=conn.prepareStatement("insert into vendor(vendor_num,vendor_name) values(?,?)");
		for(int i=0;i<10;i++){
			pstmt.setString(1, String.valueOf((int)(Math.random() * 1000)));
			pstmt.setString(2, "厂商"+i);
			pstmt.executeUpdate();
		}
		System.out.println("插入成功！");
		
	} catch (SQLException e) {
		e.printStackTrace();
	}finally{
		try {
			pstmt.close();
			close(conn);
		} catch (SQLException e) {
			e.printStackTrace();
		}
		
		
	}
	  
  }
  
  
  /**
   * 测试向一个表vendor中插入数据
   */
  public static void insertParven(){
	  Connection conn= getConnetion();
	  Statement stmt1=null;
	  Statement stmt2=null;
	  PreparedStatement pstmt=null;
	  ResultSet rs1=null;
	  ResultSet rs2=null;
	  List list1=new ArrayList();
	  List list2=new ArrayList();
	try {
		pstmt=conn.prepareStatement("insert into parven(part_num,vendor_num,PART_AMOUNT)values(?,?,?)");
		stmt1=conn.createStatement();
		stmt2=conn.createStatement();
		rs1=stmt1.executeQuery("select p.part_num from part p");
		rs2=stmt2.executeQuery("select v.vendor_num from vendor v");
		while(rs1.next()){
			list1.add(rs1.getString(1));
		}
		while(rs2.next()){
			list2.add(rs2.getString(1));
		}
		String partnum="";
		String vendornum="";
		
		//向vendor中插入1000万条数据，一秒中能插入1000条，1插入1143379万数据，耗时15分钟
		for(int i=0;i<list1.size();i++){
			for(int j=0;j<list2.size();j++){
				for(int k=0;k<100000;k++){
				partnum=(String)list1.get(i);
				vendornum=(String)list2.get(j);
				pstmt.setString(1, partnum);
				pstmt.setString(2, vendornum);
				pstmt.setInt(3, (int)(Math.random() * 1000));
				pstmt.executeUpdate();
			}
		 }
		}
	
		
		System.out.println("插入成功！");
		
	} catch (SQLException e) {
		e.printStackTrace();
	}finally{
		try {
			pstmt.close();
			rs2.close();
			rs1.close();
			stmt1.close();
			close(conn);
		} catch (SQLException e) {
			e.printStackTrace();
		}
		
		
	}
	  
  }