从存在外键表记录的表中选择1行

Question

我有两个表，产品和ProductImages，产品和ProductImages之间有一对多的关系。我正在尝试在Products表上进行查询，条件是结果只包含ProductImages表中具有匹配记录的行。

Products
----------
id (PK)

ProductImages
---------------
id (PK)
product_id (FK to Products)

我可以使用子查询的唯一方法是使用子查询，但肯定必须有更好/更有效的方法。

Answer 1

SELECT p.* FROM Products AS p
INNER JOIN ProductImages AS pi ON p.id = pi.product_id
GROUP BY p.id

Answer 2

用户join

SELECT * FROM Products INNER JOIN ProductImage  on 
Products.id  = ProductImage.product_id 

Answer 3

select * from products
where id in (select product_id from ProductImages)

Answer 4

SELECT Products.* FROM Products
INNER JOIN ProductImages ON Products.id = ProductImages.id
and Products.Id = @ProductID // if required this condition