MYSQL查詢將“表1”中的所有“表2”包括在內

Question

我有這個PHP導出日期到一個CSV文件：

$link = mysql_connect($host, $user, $pass) or die("No se pudo conectar." . mysql_error());
mysql_select_db($db) or die ("No se pudo conectar.");

$csv_output = "Creado el, Id de Ticket, Departamento, Tema de Ayuda, Prioridad, Nombre de Staff, Apellido de Staff, Nombre del cliente, Email del cliente, Asunto, Telefono, Extension, Estado de ticket, Direccion, Marca, Tienda, Lugar de Tienda, Codigo del PC, Fecha de compra, Factura, Documento, ID, Celular, Serie del Producto, Estado del Producto, Descripcion(PyP Defectuosa), Serie(PyP Defectuosa), Proveedor(PyP Defectuosa), Factura(PyP Defectuosa), Guia(PyP Defectuosa), Fecha(PyP Defectuosa), Garantía(PyP Defectuosa), Cantidad(PyP Defectuosa), Estado(PyP Defectuosa), Comentario(PyP Defectuosa), Usuario(PyP Defectuosa), Courier(PyP Defectuosa), N°Remito(PyP Defectuosa), Fecha de envio(PyP Defectuosa)";

$csv_output .= "\n";

$query = "(SELECT t1.created, t1.ticket_id, t3.dept_name, t1.helptopic, t1.priority_id, t2.firstname, t2.lastname, t1.name, t1.email, t1.subject, t1.phone, t1.phone_ext, t1.status, t1.address, t1.pcbrand, t1.storeLocation, t1.place, t1.pcCode, t1.purchaseDate, t1.invoice, t1.tipoid, t1.numId, t1.cell_phone, t1.nserieprod, t1.estprod, t4.ticket_id, t4.`desc` , t4.serial, t4.supplier, t4.invoice, t4.guide, t4.date, t4.warranty, t4.volume, t4.state, t4.comment, t4.user, t4.nomcourier, t4.nremito, t4.fenvio
FROM ticket AS t1, staff AS t2, department AS t3, prod_cambio AS t4
WHERE t2.dept_id = t3.dept_id
AND t1.staff_id = t2.staff_id
AND t1.ticket_id = t4.ticket_id

order by t1.ticket_id)";

$result = mysql_query($query);

if (mysql_num_rows($result) > 0) {
while ($row = mysql_fetch_row($result)) {
for ($j = 0; $j < 39; $j++) {
if ($j <= 25){
$csv_output .= $row[$j]. " ,";  
}
$csv_output .= $row[$j]. " ,";
}
$csv_output .= "\n";
}
}
$filename = $file."_".date("Y-m-d_H-i",time());
header("Content-type: application/vnd.ms-excel");
header("Content-disposition: csv" . date("Y-m-d") . ".csv");
header( "Content-disposition: filename=".$filename.".csv");
print $csv_output;
exit;

我選擇2個不同的表，然后嘗試將它們轉換成一個表。 我的問題是這樣的：

Created:            Ticket_id (Table 1):      Dept_name:       Priority_id:            Firstname:              Ticket_id (Table 2): 
2011-11-23 10:04:33     2                    Soporte Lima             2                   Juan Carlos                  2
2011-11-23 10:28:55     3                    Soporte Lima             2                   Antonio Arturo               3
2011-11-23 10:42:07     4                    Soporte Lima             2                   Renzo                        4
2011-11-23 10:44:33     5                    Soporte Lima             2                   Renzo                        5
2011-11-23 10:44:33     5                    Soporte Lima             2                   Renzo                        5
2011-11-23 10:44:33     5                    Soporte Lima             2                   Renzo                        5
2011-11-23 11:00:58     6                    Soporte Lima             2                   Miguel                       6

如果您每次在“表2”中的Ticket_id與“表1”匹配時都重復“表1”，我該如何打印這樣的內容：

Created:            Ticket_id (Table 1):      Dept_name:       Priority_id:            Firstname:              Ticket_id (Table 2): 
2011-11-23 10:04:33     2                    Soporte Lima             2                   Juan Carlos                  2
2011-11-23 10:28:55     3                    Soporte Lima             2                   Antonio Arturo               3
2011-11-23 10:42:07     4                    Soporte Lima             2                   Renzo                        4
2011-11-23 10:44:33     5                    Soporte Lima             2                   Renzo                        5
                                                                                                                       5
                                                                                                                       5
2011-11-23 11:00:58     6                    Soporte Lima             2                   Miguel                       6

重復時“表1”部分中的空白，僅打印“表2”列

我想將所有“表2”包括在“表1”結果中，但不重復“表” 1列的信息，而是將其留空並繼續打印“表2”列。 有辦法嗎？

Answer 1

您是否嘗試過SELECT DISTINCT？ 從示例結果來看，似乎僅添加一個distinct就能消除重復的行。

Answer 2

更改輸出：

$last_ticket_id = 0;
while ($row = mysql_fetch_row($result)) {
    if ($last_ticket_id == $row[1]) { $print_data = false; } else { $print_data = true; }
    for ($j = 0; $j < 39; $j++) {
        // not understand this but i leav
        if ($j <= 25) { $csv_output .= $row[$j]. " ,"; }
        // check is leav empty or not
        if (!$print_data && in_array($j, array(0,1,2,3,4)) ) {
            $csv_output .= " ,";
        } else {
            $csv_output .= $row[$j]. " ,";
        }
    }
    $csv_output .= "\n";
    $last_ticket_id = $row[1];
}