Laravel/Postgres db查詢？

Question

我有查詢Laravel/Postgres數據庫查詢（奇怪）問題。我會在這裏粘貼整個查詢（這是有點長，但我們將重點只是其中的一部分）：

select distinct "products".*, "brands"."name" as "brand", "brands"."image" as "brand_image", "product_categories"."name" as "category", "product_categories"."slug" as "category_slug", count(distinct product_features.feature_category_id) as features_count from "products" inner join "brands" on "products"."brand_id" = "brands"."id" inner join "product_categories" on "products"."category_id" = "product_categories"."id" left join "product_features" on "products"."id" = "product_features"."product_id" where "products"."deleted_at" is null and "products"."category_id" in (142) and "products"."published" = true and "brands"."published" = true and "product_categories"."published" = true and "product_categories"."deleted_at" is null and "price" >= 0 and "price" <= 19000 and "products"."brand_id" in (17) and 
      (product_features.feature_category_id = 555 and 
      CAST(product_features.value AS BOOLEAN) = true and 
      product_features.deleted_at IS NULL) or 
      (product_features.feature_category_id = 554 and 
      CAST(product_features.value AS BOOLEAN) = true and 
      product_features.deleted_at IS NULL) group by "products"."id", "brands"."name", "brands"."image", "product_categories"."name", "product_categories"."slug" having count(distinct product_features.feature_category_id) = 2 order by price asc 

這是最初的查詢，但是當我執行它，我得到奇怪的錯誤說：

ERROR: invalid input syntax for type boolean: "800" 

我不知道爲什麼會拋出此錯誤？

Answer 1

您的product_features.value是一個文本字段。雖然Postgres可以將800之類的非零整數轉換爲布爾型true，但如果將text轉換爲'800'至boolean，則不成立。

解決方法是檢查product_features.value空虛和/或等於'0'而不是CAST(product_features.value AS BOOLEAN) = true。