选择数据库中所有搜索到的 ID

Question

SELECT name FROM users 
WHERE id=(SELECT added_id FROM relations 
          WHERE status='1' AND adding_id=2);

有这个但是我需要搜索所有匹配这个搜索的名字。

Answer 1

你做错的是使用 = 而不是 in 子句。

SELECT name FROM users 
WHERE id in (SELECT added_id FROM relations 
WHERE status='1' AND adding_id=2);

Selecting all searched IDs in a database