book_shop / SQL_Query

unit SQL_Query;

interface

uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, Grids, DBGrids, Db, DBTables;

type
TForm_SQL_Query = class(TForm)
Query1: TQuery;
DataSource1: TDataSource;
Button_Execute: TButton;
Button_Clear: TButton;
Button_Close: TButton;
GroupBox1: TGroupBox;
Memo1: TMemo;
GroupBox2: TGroupBox;
DBGrid1: TDBGrid;
Button_Save: TButton;
Button_Load: TButton;
OpenDialog1: TOpenDialog;
SaveDialog1: TSaveDialog;
procedure Button_ExecuteClick(Sender: TObject);
procedure Button_ClearClick(Sender: TObject);
procedure Button_CloseClick(Sender: TObject);
procedure Button_LoadClick(Sender: TObject);
procedure Button_SaveClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form_SQL_Query: TForm_SQL_Query;

implementation

{$R *.DFM}

procedure TForm_SQL_Query.Button_ExecuteClick(Sender: TObject);
begin
//присваивается текст SQL-запроса
Form_SQL_Query.Query1.SQL:=Form_SQL_Query.Memo1.Lines;
try
//закрывается запрос
Form_SQL_Query.Query1.Active:=false;
//открывается запрос
Form_SQL_Query.Query1.Active:=true;
except
//в случае ошибки базы данных выводится сообщение об ошибке
on error: EDatabaseError do begin
MessageDlg('При выполнении запроса произошла ошибка:'+#13+#13+
error.Message ,mtError,[mbOK],0);
end;
end;
end;

procedure TForm_SQL_Query.Button_ClearClick(Sender: TObject);
begin
Form_SQL_Query.Memo1.Lines.Clear;
end;

procedure TForm_SQL_Query.Button_CloseClick(Sender: TObject);
begin
close;
end;

procedure TForm_SQL_Query.Button_LoadClick(Sender: TObject);
begin
if OpenDialog1.Execute then begin
Memo1.Lines.LoadFromFile(OpenDialog1.FileName);
end;
end;

procedure TForm_SQL_Query.Button_SaveClick(Sender: TObject);
begin
if SaveDialog1.Execute then begin
Memo1.Lines.SaveToFile(ChangeFileExt(SaveDialog1.FileName,'.sql'));
end;
end;

end.