如何使用Dropdown中的链接在sql请求中显示值

Question

我有这个sql请求：

 SELECT LEFT("Libelle", 10) as lib, "LRU", "Client", 
round(sum("Montant_fac_eur")) as ca from "foundry_sync"."/Users/Data/detfactsam16_17_Données-master" 
    where "Nature"='Repair' 
    and "annee" = {{w_widget18.selectedValue}}
    and extract(month from "Facturation") 
between {{w_widget35.selectedValue}} +0 and {{w_widget35.selectedValue}} +5
    group by lib,"LRU", "Client"

当我运行它时，参数lib返回null，当我对此行and "annee" = {{w_widget18.selectedValue}}发表评论时，它会返回lib的所有值

你能告诉我哪里有问题吗？ 谢谢