Delphi 操作SQL 插入一万条数据三种方式速度测试

批量数据插入性能对比

最新推荐文章于 2025-10-13 15:29:32 发布

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本文通过三种不同的方式在数据库中批量插入一万条记录，并对比了它们的执行时间。第一种方式是一条一条地插入；第二种方式是将所有SQL语句拼接在一起执行；第三种方式则是使用事务进行批量插入。

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    btn1: TButton;
    ADOConnection1: TADOConnection;
    ADOQuery1: TADOQuery;
    ADOCommand1: TADOCommand;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure btn1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
    procedure ExecSql(SqlSentence:String);
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.ExecSql(SqlSentence:String);
begin
    with ADOQuery1 do
    begin
      Close;
      SQL.Clear();
      SQL.Add(SqlSentence);
      ExecSQL;
    end;
end;

procedure TForm1.Button1Click(Sender: TObject);
var I:integer;
    SqlStr,MsgStr:string;
    ID,Name:string;
    Time:Cardinal;
begin
  // 一条一套插入1万条数据 耗时大约86秒
  Time:=GetTickCount;
  for i:=1 to 10000 do
  begin
    Name:= QuotedStr('easyboot'+InttoStr(i));
    SqlStr:=Format(' insert into MyTest (Name) values (%s)',[Name]);
    ExecSql(SqlStr );
  end;
  Time:=GetTickCount-Time;
  MsgStr:=Format('Time %d ',[Time]);
  ShowMessage(MsgStr);
end;

procedure TForm1.btn1Click(Sender: TObject);
var I,x:integer;
    SqlStr,MsgStr:string;
    ID,Name:string;
    Time:Cardinal;
begin
  // 一次插入1万条数据 耗时大约19秒
  Time:=GetTickCount;
  for i:=1 to 10000 do
  begin
    Name:= QuotedStr('easyboot'+InttoStr(i));
    SqlStr:=SqlStr+Format(' insert into MyTest (Name) values (%s)  ',[Name]);

  end;
  ExecSql(SqlStr );
  Time:=GetTickCount-Time;
  MsgStr:=Format('Time %d ',[Time]);
  ShowMessage(MsgStr);
end;

procedure TForm1.Button2Click(Sender: TObject);
var I,x:integer;
    SqlStr,MsgStr:string;
    ID,Name:string;
    Time:Cardinal;
begin
  // 一次插入1万条数据 耗时大约4秒
  Time:=GetTickCount;

  for i:=1 to 10000 do
  begin
    Name:= QuotedStr('easyboot'+InttoStr(i));
    SqlStr:=SqlStr+ Format(' insert into MyTest (Name) values (%s)  ',[Name]);

  end;
  ADOConnection1.Open;
  ADOConnection1.BeginTrans;
  ADOCommand1.CommandText:=SqlStr;
  ADOCommand1.Execute();
  ADOConnection1.CommitTrans;

  Time:=GetTickCount-Time;
  MsgStr:=Format('Time %d ',[Time]);
  ShowMessage(MsgStr);
end;

end.