如何获取配置单元中的所有列的总和

Question

是否可以获取配置单元表中的所有列的总和。我的意思是任何单一的方式，采取和

表 山坳COL_1 COL_2 col_3

Ouptut 总和（COL），和（COL_1），和（COL_2）和（col_3）

Answer 1

create table mytable (i int,j int,k int); 
insert into mytable values (1,2,3),(4,5,6),(7,8,9); 

---

select  pos+1  as col 
      ,sum (val) as sum_col 

from  mytable t 
      lateral view posexplode(array(*)) pe 

group by pos 
; 

---

+-----+---------+ 
| col | sum_col | 
+-----+---------+ 
| 1 |  12 | 
| 2 |  15 | 
| 3 |  18 | 
+-----+---------+ 

（所以请帮助我的神）

select  map_values 
      (
       str_to_map 
       (
        concat_ws 
        (
         ',' 
         ,sort_array 
         (
          collect_list 
          (
           concat_ws 
           (
            ':' 
            ,lpad(cast(pos as string),10,'0') 
            ,cast(sum_val as string) 
           ) 
          ) 
         ) 
        ) 
       ) 
      )  as sum_col_array 

from  (select  pos 
         ,sum (val) as sum_val 

      from  mytable t 
         lateral view posexplode(array(*)) pe 

      group by pos 
      ) t 
; 

---

+------------------+ 
| sum_col_array | 
+------------------+ 
| ["12","15","18"] | 
+------------------+