Laravel/Postgres db查询？

Question

我有查询Laravel/Postgres数据库查询（奇怪）问题。我会在这里粘贴整个查询（这是有点长，但我们将重点只是其中的一部分）：

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 

这是最初的查询，但是当我执行它，我得到奇怪的错误说：

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

我不知道为什么会抛出此错误？

Answer 1

您的product_features.value是一个文本字段。虽然Postgres可以将800之类的非零整数转换为布尔型true，但如果将text转换为'800'至boolean，则不成立。

解决方法是检查product_features.value空虚和/或等于'0'而不是CAST(product_features.value AS BOOLEAN) = true。