请求sql没问题，需要信息

Question

我正在创建一个规范系统，但是我的请求和结果存在问题。信息重复。

如果您需要更多信息，我将完成文档。

谢谢。

我想在特定产品中获得的结果，像这样的表：

Connections {
    target: model
    onDataChanged: {
        currentIndex = topLeft.row() + 1;
    }
}

我得到的结果是：

Auto (categories)
     Peugeot ===> 208 (sub categories)
     Color  ===> black

Material
     Plastic ===> Yes
     Cuir    ===> Yes

我有2个请求：

此请求允许显示类别：汽车，材料

Auto
    Peugeot ===> 208
    Renault   ===> 208   ==> no good value. it must not appear not included
    Color ===> black  
    Color   ===> black   ==> no good value. it must not appear not included

Materials
    Plastic ===> Yes
    Cuir    ===> Yes

$QSpecification = $this->db->prepare('select ag.specification_group_id, agd.name, pa.products_id from :table_products_specification pa, :table_specification a, :table_products_specification_group ag, :table_products_specification_group_description agd where pa.products_id = :products_id and agd.language_id = :language_id and pa.customers_group_id = :customers_group_id and pa.specification_group_id = a.specification_group_id and a.specification_group_id = ag.specification_group_id and ag.specification_group_id = agd.specification_group_id and pa.status = 1 group by ag.specification_group_id order by ag.sort_order, agd.name '); $QSpecification->bindInt(':products_id', $products_id); $QSpecification->bindInt(':language_id', $this->lang->getId()); $QSpecification->bindInt(':customers_group_id', $this->customer->getCustomersGroupID()); $QSpecification->execute(); $specification = $QSpecification->fetchAll(); ==>显示数组下的所有表

我创建了一个循环

fetchAll

在此循环中，我插入了所有数据结果

while（$ QproductsSpecification-> fetch（））{         if（$ product_specification_group ['specification_group_id'] == $ QproductsSpecification-> valueInt（'specification_group_id'））{

foreach ($specification as $product_specification_group) {
          $product_specification_data = [];

          $QproductsSpecification = $this->db->prepare('select pa.specification_group_id,
                                                                a.specification_id,
                                                                pa.id,
                                                                ad.name,
                                                                pad.text
                                                        from  :table_products_specification_description pad,
                                                         :table_products_specification pa, 
                                                         :table_specification a,  
                                                        :table_specification_description ad

                                                        where pa.products_id = :products_id
                                                        and a.specification_group_id = :specification_group_id
                                                        and a.specification_id = ad.specification_id
                                                        and pa.specification_group_id = a.specification_group_id
                                                        and ad.language_id = :language_id
                                                        and pad.language_id = :language_id
                                                        and pa.id = pad.id
                                                        and (pa.customers_group_id = :customers_group_id or pa.customers_group_id = 99)
                                                        and pa.status = 1
                                                        order by pa.sort_order,
                                                                ad.name                                                             
                                                                ');

          $QproductsSpecification->bindInt(':specification_group_id', $product_specification_group['specification_group_id']);
          $QproductsSpecification->bindInt(':language_id', $this->lang->getId());
          $QproductsSpecification->bindInt(':products_id', $products_id);
          $QproductsSpecification->bindInt(':customers_group_id', $this->customer->getCustomersGroupID());

          $QproductsSpecification->execute();