Integer GUID和Comb做主键的效率测试(Delphi+access)(二)

看一下我们的表格构:

 

 


 

 TInteger表是用自动加1字段做为主键(PInt)

TGuid表是用GUID做为主键(PGUID)
PComb表是用Comb做为主键(PComb)
PComb2表是用改过后的Comb做为主键(PComb,第四种情况)
在这四表中还有一列,NInt,用于插入一个数值,随机的,没有什么实际的意义

 

 

 

 

 

下面先看一下我们的测试界面:

 

 


 

 

 

插入数据是指在数据库的四个表中插入指定条目的数据.
Count(*)是在四个表中用select cocunt(*) as rc from table做统计查询
Count是在四个表中用select cocunt(主键) as rc from table做统计查询

 

 

 

 

 

Label3,Label5,Label7,Label9分别是四个表所运行的时间.

 

 

 

 

 

下面是测试程序:

 

 

 

 

 

unit Unit1;

 

 

 

 

 

interface

 

 

 

 

 

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls,Activex,SSystemUnit, ADODB, DB;

 

 

 

 

 

type
  TForm1 = class(TForm)
    ADOConnection1: TADOConnection;
    ADOCommand1: TADOCommand;
    Edit1: TEdit;
    Button1: TButton;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Button2: TButton;
    Button3: TButton;
    Label8: TLabel;
    Label9: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
    procedure InsertComb(cc : integer);
    procedure InsertComb2(cc : integer);
    procedure InsertGuid(cc : integer);
    procedure insertInt(cc : integer);
  public
    { Public declarations }
  end;

 

 

 

 

 

var
  Form1: TForm1;

 

 

 

 

 

implementation

 

 

 

 

 

{$R *.dfm}

 

 

 

 

 

procedure TForm1.Button1Click(Sender: TObject);
var
 TotalTime : Cardinal;
 cc : integer;
begin
cc:= strtoint(Edit1.Text);
TotalTime := GetTickCount;
insertInt(cc);
TotalTime := GetTickCount - TotalTime;
Label3.Caption := inttostr(TotalTime);

 

 

 

 

 

TotalTime := GetTickCount;
InsertGuid(cc);
TotalTime := GetTickCount - TotalTime;
Label5.Caption := inttostr(TotalTime);

 

 

 

 

 

TotalTime := GetTickCount;
InsertComb(cc);
TotalTime := GetTickCount - TotalTime;
Label7.Caption := inttostr(TotalTime);

 

 

 

 

 

TotalTime := GetTickCount;
InsertComb2(cc);
TotalTime := GetTickCount - TotalTime;
Label9.Caption := inttostr(TotalTime);
end;

 

 

 

 

 

procedure TForm1.InsertComb(cc : integer);
var
  i : integer;
begin
  ADOCommand1.CommandText :='Insert into TComb(PComb,NInt) values(:PComb,:NInt)';
  ADOCommand1.Prepared := true;
  For i:= 0 to cc-1 do
  begin
     ADOCommand1.Parameters[0].Value := SSystem.GetGuidString(SSystem.GetCombGUID(),'','','');
     ADOCommand1.Parameters[1].Value := i/7;
     ADOCommand1.Execute;
  end;

 

 

 

 

 

end;

 

 

 

 

 

procedure TForm1.InsertComb2(cc: integer);
var
  i : integer;
  //combStr : string;
begin
  ADOCommand1.CommandText :='Insert into TComb2(PComb,NInt) values(:PComb,:NInt)';
  ADOCommand1.Prepared := true;
  For i:= 0 to cc-1 do
  begin
     //combStr :=
     //combstr := copy(combstr,21,32)+copy(combstr,1,20);
     ADOCommand1.Parameters[0].Value := SSystem.GetGuidString2(SSystem.GetCombGUID(),'','','');;
     ADOCommand1.Parameters[1].Value := i/7;
     ADOCommand1.Execute;
  end;

 

 

 

 

 

end;

 

 

 

 

 

procedure TForm1.InsertGuid(cc : integer);
var
  i : integer;
  guid : TGUID;
begin
  ADOCommand1.CommandText :='Insert into TGuid(PGuid,NInt) values(:PGuid,:NInt)';
  ADOCommand1.Prepared := true;
  For i:= 0 to cc-1 do
  begin
     CoCreateGUID(guid);
     ADOCommand1.Parameters[0].Value := SSystem.GetGuidString(guid,'','','');
     ADOCommand1.Parameters[1].Value := i/7;
     ADOCommand1.Execute;
  end;

 

 

 

 

 

end;

 

 

 

 

 

procedure TForm1.insertInt(cc : integer);
var
  i : integer;
begin
  ADOCommand1.CommandText :='Insert into TInteger(NInt) values(:NInt)';
  ADOCommand1.Prepared := true;
  For i:= 0 to cc-1 do
  begin
     ADOCommand1.Parameters[0].Value := i/7;
     ADOCommand1.Execute;
  end;

 

 

 

 

 

end;

 

 

 

 

 

procedure TForm1.Button2Click(Sender: TObject);
var
 TotalTime : Cardinal;
begin
TotalTime := GetTickCount;
ADOCommand1.CommandText :='select count(*) as ttc from TInteger';
ADOCommand1.Execute;
TotalTime := GetTickCount - TotalTime;
Label3.Caption := inttostr(TotalTime);

 

 

 

 

 

TotalTime := GetTickCount;
ADOCommand1.CommandText :='select count(*) as ttc from TGuid';
ADOCommand1.Execute;
TotalTime := GetTickCount - TotalTime;
Label5.Caption := inttostr(TotalTime);

 

 

 

 

 

TotalTime := GetTickCount;
ADOCommand1.CommandText :='select count(*) as ttc from Tcomb';
ADOCommand1.Execute;
TotalTime := GetTickCount - TotalTime;
Label7.Caption := inttostr(TotalTime);

 

 

 

 

 

TotalTime := GetTickCount;
ADOCommand1.CommandText :='select count(*) as ttc from Tcomb2';
ADOCommand1.Execute;
TotalTime := GetTickCount - TotalTime;
Label9.Caption := inttostr(TotalTime);
end;

 

 

 

 

 

procedure TForm1.Button3Click(Sender: TObject);
var
 TotalTime : Cardinal;
begin
TotalTime := GetTickCount;
ADOCommand1.CommandText :='select count(PInt) as ttc from TInteger';
ADOCommand1.Execute;
TotalTime := GetTickCount - TotalTime;
Label3.Caption := inttostr(TotalTime);

 

 

 

 

 

TotalTime := GetTickCount;
ADOCommand1.CommandText :='select count(PGuid) as ttc from TGuid';
ADOCommand1.Execute;
TotalTime := GetTickCount - TotalTime;
Label5.Caption := inttostr(TotalTime);

 

 

 

 

 

TotalTime := GetTickCount;
ADOCommand1.CommandText :='select count(PComb) as ttc from Tcomb';
ADOCommand1.Execute;
TotalTime := GetTickCount - TotalTime;
Label7.Caption := inttostr(TotalTime);

 

 

 

 

 

TotalTime := GetTickCount;
ADOCommand1.CommandText :='select count(PComb) as ttc from Tcomb2';
ADOCommand1.Execute;
TotalTime := GetTickCount - TotalTime;
Label9.Caption := inttostr(TotalTime);
end;

 

 

 

 

 

end.

 

 

 

 

 

很简单的代码,无需加说明了.