Question

我在推进中遇到了groupBy的问题：

问题属于两个表。一个称为显示，另一个称为customerDisplayType。在customerDisplayType表中有两列'driver'和'driverOptions'。我想分组这两个专栏。所以结果看起来像这样：

Display1 -> with customerDisplayType driver "1" and driverOptions "xyz"
Display2 -> with customerDisplayType driver "1" and driverOptions "abc"
Display3 -> with customerDisplayType driver "2" and driverOptions "xyz"

我希望你知道我的意思......

到目前为止，我尝试过这样的事情：

    $displays = PiDisplayQuery::create()
    ->filterByStationId($_object->getId())    
    ->usePiCustomerDisplayTypeQuery()
        ->groupBy("CONCAT ".PiCustomerDisplayTypePeer::DRIVER.",".PiCustomerDisplayTypePeer::DRIVER_OPTIONS) // I also tried UNION instead of CONCAT
    ->endUse()
    ->find();

我该如何解决？

Answer 1

关于code，如果你想使用多个groupBy，你只需要多次调用groupBy方法：

$displays = PiDisplayQuery::create()
  ->filterByStationId($_object->getId())
  ->usePiCustomerDisplayTypeQuery()
    ->groupBy('PiCustomerDisplayType.Driver')
    ->groupBy('PiCustomerDisplayType.DriverOptions')
  ->endUse()
  ->find();

PHP Propel groupBy两列

1 个答案: