fpdf/php中的分组报告

我试图用PHP和fpdf创建一个分组报告，但是我得到了重复的组，如附图所示。下面是我的代码

$query = "SELECT ROW_NUMBER() OVER (ORDER BY Rentals.RentalId) row_num, CONVERT(varchar(24),RentalDate) as RentalDate, 
    CustomerName, CustAddress, Telephone, DepositPaid, CONVERT(varchar(24),StartDate) as StartDate, RentalStatus,
    CONVERT(varchar(24),EndDate) as EndDate, ItemName, ItemUnit, CostPerUnit, ItemQty, RentalPeriod, ItemTotal, Rentals.RentalId
    FROM Rentals, RentalDetls
    WHERE Rentals.RentalId = RentalDetls.RentalId
    AND RentalDate BETWEEN '$StartDate1' AND '$EndDate1'";  
$result = sqlsrv_query($dbh, $query);
    
$pdf = new FPDF('L','mm','A4');
$pdf->AliasNbPages();
$pdf->AddPage('L');
$pdf->SetFont('helvetica','',14);
$pdf->Image('images/prog_logo.jpg',10,10,35);
$pdf->SetXY(50,10);
$pdf->Ln(1);
$pdf->SetXY(50,10);
$pdf->Cell(100,9, "{$CompanyName}",0,0, 'C',0);
$pdf->SetFont('helvetica','',10);
$pdf->SetXY(145,15);
$pdf->Cell(1,9, "{$PrintDate}",0,0, 'C',0);
$pdf->Cell(45,9, 'Tel:',0,0,'C',0);
$pdf->Cell(1,9, "{$CompanyPhone}",0,0, 'C',0);
$pdf->Ln(20);
$pdf->SetXY(50,15);
$pdf->SetFont('helvetica','',14);
$pdf->Cell(100,10, 'Renatl Service Details',0,0,'C',0);
$pdf->Line(5, 22, 290-5, 22);
$pdf->Ln(6);

$pdf->SetFont('helvetica','',12);   
$pdf->Cell(120,10, 'Report Period: ',0,0,'C',0);
$pdf->SetX(85,10);  
$pdf->Cell(15,10,"{$StartDate1}");
$pdf->SetX(109,10); 
$pdf->Cell(10,10,'To');
$pdf->SetX(117,10); 
$pdf->Cell(15,10,"{$EndDate1}");

$pdf->Ln(10);
$pdf->SetFont('Arial','',11); 

while($res = sqlsrv_fetch_array($result))  
{
    $RentalId = $res['RentalId'];   
    $CustomerName = $res['CustomerName'];
    $CustAddress = $res['CustAddress'];
    $Telephone = $res['Telephone']; 
    $DepositPaid = $res['DepositPaid'];
    $StartDate = $res['StartDate'];
    $EndDate = $res['EndDate'];
    
        $pdf->SetX(15,10);
        $pdf->Cell(10,10,'Customer:');  
        $pdf->SetX(35,10);
        $pdf->Cell(10,10,"{$CustomerName}");
        $pdf->SetX(75,10);
        $pdf->Cell(10,10,'Address:');
        $pdf->SetX(90,10);
        $pdf->Cell(10,10,"{$CustAddress}");
        $pdf->SetX(140,10);
        $pdf->Cell(10,10,'Telephone:');
        $pdf->SetX(160,10);
        $pdf->Cell(10,10,"{$Telephone}");
        $pdf->SetX(190,10);
        $pdf->Cell(10,10,'Deposit Paid:');
        $pdf->SetX(215,10);
        $pdf->Cell(10,10,"{$DepositPaid}");
        $pdf->Ln(7);
    
    $startY = $pdf->GetY();
    $pdf->Line(15, $startY, 230, $startY); 

        $query9 = "SELECT ROW_NUMBER() OVER (ORDER BY RentalDetlsId) row_num, ItemName, ItemUnit, CostPerUnit, ItemQty, 
            RentalPeriod, ItemTotal
            FROM RentalDetls
            WHERE RentalId = '$RentalId'";  
        $result9 = sqlsrv_query($dbh, $query9);
        while($res = sqlsrv_fetch_array($result9))  
        {
            $row_num = $res['row_num']; 
            $ItemName = $res['ItemName'];
            $ItemUnit = $res['ItemUnit'];
            $CostPerUnit = $res['CostPerUnit']; 
            $ItemQty = $res['ItemQty'];
            $RentalPeriod = $res['RentalPeriod'];
            $ItemTotal = $res['ItemTotal'];
            
            $pdf->SetX(25,10);
            $pdf->Cell(5,10,"{$row_num}");
            $pdf->SetX(35,10);
            $pdf->Cell(5,10,"{$ItemName}");
            $pdf->SetX(95,10);
            $pdf->Cell(10,10,"{$ItemUnit}");
            $pdf->SetX(120,10);
            $pdf->Cell(65,10,"{$ItemQty}");
            $pdf->SetX(140,10);
            $pdf->Cell(15,10,number_format("{$CostPerUnit}",2),0,0,'R');
            $pdf->SetX(170,10);
            $pdf->Cell(15,10,"{$RentalPeriod}");            
            $pdf->SetX(185,10);
            $pdf->Cell(15,10,number_format("{$ItemTotal}",2),0,0,'R');
            $pdf->Ln(5);
        }
        $pdf->Ln(5);
}

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请不要将图像用于代码、数据或错误。使用格式化文本。不知道，但是您有SQL注入问题