1. int -> Integer; float -> Double; char -> Char
2.
procedure TForm1.Button1Click(TObject Sender);
var
temp: string;
begin
Query1.Close;
Query1.SQL.Clear;
temp := Edit1.Text;
Query1.SQL.Add('select * from authors where state = '''+temp+'''');
Query1.Open;
end;
2.
procedure TForm1.Button1Click(TObject Sender);
var
temp: string;
begin
Query1.Close;
Query1.SQL.Clear;
temp := Edit1.Text;
Query1.SQL.Add('select * from authors where state = '''+temp+'''');
Query1.Open;
end;
var
temp:String;
begin
Query1.Close();
Query1.SQL.Clear();
temp:=Edit1.Text;
Query1.SQL.Add('select * from authors where state='''+temp+'''');
end;
Query1->Open();