獲得各種可能的組合列

Question

，如果我是有，只是返回的記錄：

SELECT * FROM USERS

Name | Gender | Company 
    Bob | male | Abc Inc. 
    Bob | male | Xyz Inc. 
    Bob | male | NULL 

而且我想它返回此：

Name | Gender | Company 
    NULL | NULL | NULL 
    NULL | NULL | Abc Inc. 
    NULL | male | NULL 
    NULL | male | Abc Inc. 
    NULL | NULL | Xyz Inc. 
    NULL | male | Xyz Inc. 
    Bob | NULL | NULL 
    Bob | NULL | Abc Inc. 
    Bob | male | NULL 
    Bob | male | Abc Inc. 
    Bob | NULL | Xyz Inc. 
    Bob | male | Xyz Inc. 

如何它完成了嗎？

Answer 1

select Name, Gender, Company 
from T 
group by Name, Gender, Company with cube 

Answer 2

SELECT DISTINCT NAME, GENDER, COMPANY FROM TABLE 
GROUP BY NAME, GENDER, COMPANY WITH CUBE