void __fastcall TForm1::FormCreate(TObject *Sender)
{
	try {
		ADOConnection1->Connected = true;
		ADOConnection1->Open();
		Memo1->Lines->Add("DB에 연결되었습니다.");
		String sql = "select * from testinfo";

		try{
			ADOQuery1->SQL->Text = sql;
			ADOQuery1->Open();
		} catch (...) {
			Memo1->Lines->Add("쿼리 실패");
		}
	} catch (...) {
			Memo1->Lines->Add("연결 실패");
	}
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
	AnsiString TempText;
	TempText.sprintf( "INSERT INTO testinfo(edit1, edit2, edit3)"
			"VALUES(%s, %s, %s)",
			Edit1->Text,
			Edit2->Text,
			Edit3->Text );

	AnsiString Temp = ADOQuery1->FieldByName("edit1")->AsString;

	if(!ADOConnection1->InTransaction)
	{
		ADOConnection1->BeginTrans();
	}else{
		ADOConnection1->CommitTrans();
	}
		try{
		for(int i = 0; i < Temp.RefCount()+1; i++)  
		{
		if(ADOQuery1->Fields->Fields[i]->AsString != AnsiString(Edit1->Text))
		{
			ADOQuery1->Insert();
			ADOQuery1->SQL->Add(TempText);
			ADOQuery1->ExecSQL();
			ADOConnection1->CommitTrans();
			Memo1->Lines->Add("삽입성공");
		}else{
			Memo1->Lines->Add("삽입실패");
		}
	}
                }catch(...){
		ADOConnection1->RollbackTrans();
	}
}

이걸 실행시키면 ExecSQL여기서 에러가나는데요 이유를 모르겠네여

이것저것 해봐도 모르겠어요.