未知的列，但它确实存在？

Question

这是我的更新查询：

UPDATE products
SET products_status = 0
WHERE (`products`.`products_id` = `products_to_categories`.`products_id` 
       and `products_to_categories`.`categories_id` = 114)

我得到的错误是：

  

1054 - 'where子句'中的未知栏'products_to_categories.products_id'

但是当我去table_to_categories表时，有一个product_id列。

我做错了什么？

Answer 1

您需要的查询可能就是这个：

UPDATE products
SET products_status = 0
WHERE products_id IN 
(SELECT products_id 
 FROM products_to_categories
 WHERE categories_id = 114)

Answer 2

得到了它：

UPDATE products
SET products_status = 0
WHERE (SELECT products_id FROM products_to_categories
WHERE(
`products`.`products_id` = `products_to_categories`.`products_id` and `products_to_categories`.`categories_id` = 114))