Transponieren mehr Spalten am gleichen

Question

Ich habe dies:

Year Apple Orange 
1  100  150 
2  200  250 
3  300  350 
2  200  250 
1  100  150 

ich dies benötigen:

Fruit  1   2   3 
Apple  200   400   300 
Orange  300   500   350 

Ich habe die Option A und Option B, aber es transponiert nur 1 Frucht, es sei denn i Mach eine "Union alle".

Option A:

select 
    'Apple' as Fruit 
    ,MAX(DECODE(year, '1', sum(Apple)) "1" 
    ,MAX(DECODE(year, '2', sum(Apple)) "2" 
from MyTable 

Option B:

select 
    * 
from (
    select 
      Apple 
      ,Year 
    from MyTable 
    ) 
PIVOT(sum(Apple) for year in ('1', '2', '3')) 

Frage:

Can U alle Spalten ohne eine "Union" umsetzen?

Answer 1

Oracle-Setup:

CREATE TABLE table_name (year, apple, orange) AS 
SELECT 1, 100, 150 FROM DUAL UNION ALL 
SELECT 2, 200, 250 FROM DUAL UNION ALL 
SELECT 3, 300, 350 FROM DUAL UNION ALL 
SELECT 2, 200, 250 FROM DUAL UNION ALL 
SELECT 1, 100, 150 FROM DUAL; 

Abfrage - Unpivot schwenken dann:

SELECT * 
FROM (
    SELECT * 
    FROM table_name 
    UNPIVOT(value FOR fruit IN (Apple, Orange)) 
) 
PIVOT (SUM(value) FOR year IN (1, 2, 3)); 

Ausgang:

FRUIT 1 2 3 
------ --- --- --- 
ORANGE 300 500 350 
APPLE 200 400 300 

Answer 2

Dies ist, wie ca Sie n mach es dynamisch. Erstellen

Aussagen

CREATE TABLE MyTable 
    (Year int, Apple int, Orange int) ; 
INSERT ALL 
    INTO MyTable (Year, Apple, Orange)  VALUES (1, 100, 150) 
    INTO MyTable (Year, Apple, Orange)  VALUES (2, 200, 250) 
    INTO MyTable (Year, Apple, Orange)  VALUES (3, 300, 350) 
    INTO MyTable (Year, Apple, Orange)  VALUES (2, 200, 250) 
    INTO MyTable (Year, Apple, Orange)  VALUES (1, 100, 150) 
SELECT * FROM dual; 

Führen Sie dieses in SQL Developer oder SQLPlus (I in SQL Developer versucht). Oder Sie können es in einer Prozedur kapseln und das Ergebnis zurückgeben.

SET ServerOutput ON size 100000; 
variable rc refcursor; 
DECLARE 
v_column_list varchar2 (2000); 
v_years varchar2(2000); 
BEGIN 
    SELECT listagg('"' || column_name || '"', ',') within 
    GROUP (ORDER BY column_id) 
    INTO v_column_list 
    FROM all_tab_columns 
    WHERE table_name = 'MYTABLE' 
     AND column_name <> 'YEAR'; 

    SELECT listagg(year, ',') within 
    GROUP (ORDER BY year) 
    INTO v_years 
    FROM (
     SELECT DISTINCT year 
     FROM MyTable); 
-- dbms_output.put_line(' v_column_list =' || v_column_list); 
-- dbms_output.put_line(' v_years =' || v_years); 
    OPEN :rc FOR 
    'SELECT * FROM 
    (SELECT * 
     FROM MyTable 
      UNPIVOT (val for fruit in (' || v_column_list || ') 
       ) 
    ) 
    PIVOT (sum (val) for year in (' || v_years || '))'; 
END; 
/

PRINT :rc 

Ausgang:

------------------------------------------------------------------------ 
FRUIT 1      2      3      
------ ---------------------- ---------------------- ---------------------- 
ORANGE 300      500      350     
APPLE 200      400      300