Hive 配置单元列出其他表中不匹配的记录

所需输出： r_glob

Reg                      Global
ID | uom                 ID  | uom    
------------------           ----------------
1  | kg                   1  | kg
1  | gm                   1  | gm
1  | ml                   3  | pl
3  | pl                    

SELECT TA.id,  TB.UOM  
FROM TB
LEFT JOIN TA
ON TB.id=TA.id  
WHERE  TA.id like '8' 
GROUP BY TA.id ,  TB.UOM;

已尝试的查询：

Reg                      Global
ID | uom                 ID  | uom    
------------------           ----------------
1  | kg                   1  | kg
1  | gm                   1  | gm
1  | ml                   3  | pl
3  | pl                    

ID | reg    | glob   
------------------  
1  | ml      | null  

SELECT TA.id,  TB.UOM  
FROM TB
LEFT JOIN TA
ON TB.id=TA.id  
WHERE  TA.id like '8' 
GROUP BY TA.id ,  TB.UOM;

输出： r_glob

Reg                      Global
ID | uom                 ID  | uom    
------------------           ----------------
1  | kg                   1  | kg
1  | gm                   1  | gm
1  | ml                   3  | pl
3  | pl                    

SELECT TA.id,  TB.UOM  
FROM TB
LEFT JOIN TA
ON TB.id=TA.id  
WHERE  TA.id like '8' 
GROUP BY TA.id ,  TB.UOM;

---

使用左外部联接并检查全局表中列中的空值

Reg                      Global
ID | uom                 ID  | uom    
------------------           ----------------
1  | kg                   1  | kg
1  | gm                   1  | gm
1  | ml                   3  | pl
3  | pl                    

SELECT TA.id,  TB.UOM  
FROM TB
LEFT JOIN TA
ON TB.id=TA.id  
WHERE  TA.id like '8' 
GROUP BY TA.id ,  TB.UOM;

ID | reg        
------------------  
1  | kg  
1  | gm      

---

下一步，我想尝试从注册表中查找所有计量单位，并为全局上不存在的计量单位设置空值：ID | reg | global------------------1 | kg | kg 1 | gm | kg1 | ml | null提前谢谢。我刚刚发布了一个新问题。