連接兩個表並更新列值

Question

我想將用戶id 1的年級別的值從tbl_profile更改為“ 3rd”，並且我想從表中引用名稱“ captain America”，因為他們具有相同的user_id。

這是我的示例表：

tbl_profile
users_id    year_level
1           none

tbl_usersinfo
users_id        full_name
1           captain america

這是我的查詢：

UPDATE tbl_profile AS p
SET p.year_level = '3rd'
LEFT JOIN
tbl_usersinfo AS i
ON
i.users_id = p.users_id
WHERE
i.full_name = 'captain america';

我希望它像這樣，但是我知道不可能執行此查詢，因為我沒有指定full_name列的來源：

UPDATE tbl_profile AS p
SET p.year_level = '3rd'
WHERE i.full_name = 'captain america'
LEFT JOIN
tbl_usersinfo AS i
ON
i.users_id = p.users_id

Answer 1

使用此查詢：

UPDATE tbl_profile
SET year_level='3rd'
WHERE users_id IN (
  SELECT users_id
  FROM tbl_usersinfo WHERE full_name = 'captain america');