的Prestashop：MySQL查询有关产品功能

Question

我需要得到的Prestashop 1.5产品的功能，但probleme是，我使用的是修改达让我把多值一个特征，每个产品

例如：

兼容的存储卡： - 点菜备忘录的xD - 记忆棒 - 记忆棒PRO - 多媒体卡（MMC） - 点菜安全数字（SD）

我得到这个查询：

Select fl.name, fvl.value, f.id_feature 
From ps_feature_lang fl Left Join 
    ps_feature_product fp On fl.id_feature = fp.id_feature And fp.id_product = 291 
    Left Join 
    ps_feature_value_lang fvl On fp.id_feature_value = fvl.id_feature_value And 
    fvl.id_lang = 5 Left Join 
    ps_feature f On f.id_feature = fl.id_feature 
Where fl.id_feature In (Select ps__fc_categories_features.feature_id 
    From ps__fc_categories_features) 
Group By fl.name, fvl.value, f.id_feature, fl.id_feature 
Order By f.position 

，但如果没有与给定产品不止一个值的功能，它会给多原糖该功能 最好的是一个查询，将Concat的值对于具有pultiple值

每个要素

thanx in advence。

Answer 1

您应该可以通过对您的查询进行小调整来完成此操作。试试这个：

Select fl.name, group_concat(fvl.value) as values, f.id_feature 
From ps_feature_lang fl Left Join 
    ps_feature_product fp 
    On fl.id_feature = fp.id_feature And fp.id_product = 291 Left Join 
    ps_feature_value_lang fvl 
    On fp.id_feature_value = fvl.id_feature_value And fvl.id_lang = 5 Left Join 
    ps_feature f 
    On f.id_feature = fl.id_feature 
Where fl.id_feature In (Select ps__fc_categories_features.feature_id 
         From ps__fc_categories_features 
         ) 
Group By fl.name, fl.id_feature 
Order By f.position; 

该查询将从group by删除fvl.value并添加group_concat()的select。我也删除了f.id_feature。这似乎是基于join条件的冗余。