📄 unit9.~pas
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unit Unit9;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, Grids, DBGrids, StdCtrls, DB, ADODB;
type
TForm9 = class(TForm)
GroupBox1: TGroupBox;
RadioButton2: TRadioButton;
RadioButton3: TRadioButton;
Button1: TButton;
RadioButton1: TRadioButton;
GroupBox2: TGroupBox;
DBGrid1: TDBGrid;
ADOConnection1: TADOConnection;
ADOQuery1: TADOQuery;
DataSource1: TDataSource;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form9: TForm9;
implementation
{$R *.dfm}
procedure TForm9.Button1Click(Sender: TObject);
begin
ADOQuery1.Close;
if RadioButton1.Checked then
begin
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('select Table2.spnum,spname,kindname,price,intime,innum,gysname from Table2,Table6,Table5,Table7 where kindname=''5元以下'' and Table2.spnum=Table6.spnum and Table2.gysnum=Table5.gysnum and Table7.kindnum=Table6.kindnum');
ADOquery1.Open;
end;
if RadioButton2.Checked then
begin
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('select Table2.spnum,spname,kindname,price,intime,innum,gysname from Table2,Table6,Table5,Table7 where kindname=''5元到10元'' and Table2.spnum=Table6.spnum and Table2.gysnum=Table5.gysnum and Table7.kindnum=Table6.kindnum');
ADOquery1.Open;
end;
if RadioButton3.Checked then
begin
ADOQuery1.SQL.Clear;
ADOQuery1.SQL.Add('select Table2.spnum,spname,kindname,price,intime,innum,gysname from Table2,Table6,Table5,Table7 where kindname=''10元以上'' and Table2.spnum=Table6.spnum and Table2.gysnum=Table5.gysnum and Table7.kindnum=Table6.kindnum');
ADOquery1.Open;
end;
end;
end.
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