mysql：无法正确检索所需的数据

Question

这是我的数据库：

我的目标是检索包含所有admin_ngp以及仅yes旁边的admin_ngp的所有行。类似这样的事情：

我觉得简单的相交操作就足以得到我的结果。但是，我无法获得理想的结果。这是我的查询：

SELECT * 
FROM artist_list 
WHERE uploaded_by = 'admin_ngp' IN (SELECT * 
                                    FROM artist_list 
                                    WHERE changed_by_admin = 'yes')

Answer 1

You could use an OR in your where:

SELECT * 
FROM artist_list 
WHERE (uploaded_by = 'admin_ngp' AND name='admin_ngp' AND bio='admin_ngp') 
      OR (changed_by_admin = 'yes' AND uploaded_by = 'admin_ngp')

Answer 2

不要想太多。我想这就是您所需要的。

SELECT * 
    FROM artist_list 
    WHERE 
        uploaded_by = 'admin_ngp' and changed_by_admin = 'yes'
;

Answer 3

尝试一下

案例1 如果您要upload_by为'admin_ngp'，则changed_by_admin应该为'yes'或名称和bio应该为'admin_ngp'

SELECT * 
FROM artist_list 
WHERE Case when uploaded_by = 'admin_ngp' and changed_by_admin = 'yes'then 1 when name = 'admin_ngp' and bio = 'admin_ngp' then 1 else 0 end = 1

案例2 如果您希望upload_by为'admin_ngp'，则changed_by_admin应该为'yes'，或者name或bio应该为'admin_ngp'

SELECT * 
FROM artist_list 
WHERE Case when uploaded_by = 'admin_ngp' and changed_by_admin = 'yes'then 1 when name = 'admin_ngp' then 1 when bio = 'admin_ngp' then 1 else 0 end = 1