实例——复制数据.txt

Delphi 7组件应用实例 书籍语言： 简体中文 书籍类型： 程序设计 授权方式： 免费软件 书籍大小： 105 KB

unit UIBSQL;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Grids, DBGrids, DB, IBDatabase, IBCustomDataSet, IBQuery, IBSQL,
  IBUpdateSQL, DBClient, DBLocal, DBLocalI, ExtCtrls, DBCtrls, StdCtrls,
  IBTable, IBDatabaseInfo;

type
  TFIBSQL = class(TForm)
    IBSQL1: TIBSQL;
    IBDatabase1: TIBDatabase;
    IBTransaction1: TIBTransaction;
    DataSource1: TDataSource;
    DBGrid1: TDBGrid;
    IBSQL2: TIBSQL;
    Button1: TButton;
    IBTable1: TIBTable;
    IBTable2: TIBTable;
    DataSource2: TDataSource;
    DBGrid2: TDBGrid;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  FIBSQL: TFIBSQL;

implementation

{$R *.dfm}

procedure TFIBSQL.Button1Click(Sender: TObject);
var
  Filename : String;
  RawOutput : TIBOutputRawFile;
  RawInput : TIBInputRawFile;
begin
  IBSQL1.Sql.Text := 'Select country, currency from country';
  IBSQL2.Sql.Text := 'Insert into Newcountry (country, currency) values(:first,:second)';
  Filename := 'd:\DataFile.RAW';
  
  //将COUNTRY表中的数据输出到 d:\DataFile.RAW 文件中
  RawOutput:= TIBOutputRawFile.Create;
  try
    RawOutput.FileName := FileName;
    IBSQL1.BatchOutput(RawOutput);
  finally
    RawOutput.Free;
  end;

  //将d:\DataFile.RAW 文件中的数据输入到NEWCOUNTRY表中
  RawInput := TIBInputRawFile.Create;
  try
    RawInput.FileName := FileName;
    IBSQL2.BatchInput(RawInput);
    IBTable2.Close;
    IBTable2.Open;
  finally
    RawInput.Free;
  end;

  //事务提交
  IBSQL2.Transaction.CommitRetaining;
end;


procedure TFIBSQL.FormCreate(Sender: TObject);
begin
 IBTable1.Open;
 IBTable2.Open;
end;

end.