Oracle 11g: Unpivot multiple columns and include column name

Question

I\'m triyng to unpivot multiple columns in my dataset. Here\'s what my data look like.

CREATE TABLE  T5 (idnum NUMBER,f1 NUMBER(10,5),f2 NUMBER(10,5),f3 NUMB         


        

Answer 1

Change your UNPIVOT to be like this

select A.*, sk
from (select IDNUM,F1,F2,F3,E1,E2,H1,H2,
      null as E3,null as H3
      from T5) AS A
UnPivot((F,E,H) for sk in ((F1,E1,H1) as 'F1',
                              (F2,E2,H2) as 'F2',
                              (F3,E3,H3) as 'F3'))
order by IDNUM,SK;

This should do the trick

Answer 2

Just select idnum, sk, f, e, h, 'F'||SK as col_name ... You need to specify all columns instead of an asterix.

Like this http://sqlfiddle.com/#!4/12446/21

Answer 3

If you need to store result of UNPIVOT you could use INSERT ALL:

CREATE TABLE T5_unpiv(IDNUM NUMBER,SK NUMBER,F NUMBER,E NUMBER,H NUMBER
                     ,F_COL_NAME VARCHAR2(100));

INSERT ALL 
  INTO T5_unpiv(IDNUM,SK,F,E,H,F_COL_NAME) VALUES(idnum,1,f1,e1,h1,'F1')
  INTO T5_unpiv(IDNUM,SK,F,E,H,F_COL_NAME) VALUES(idnum,2,f2,e2,h2,'F2')
  INTO T5_unpiv(IDNUM,SK,F,E,H,F_COL_NAME) VALUES(idnum,3,f3,NULL,NULL,'F3')
SELECT * FROM T5;

SELECT * FROM T5_unpiv;

DBFiddle Demo

Output:

┌───────┬────┬─────────┬─────────┬─────────┬────────────┐
│ IDNUM │ SK │    F    │    E    │    H    │ F_COL_NAME │
├───────┼────┼─────────┼─────────┼─────────┼────────────┤
│     1 │  1 │ 10.2004 │ 9.008   │ .99383  │ F1         │
│     1 │  2 │   5.009 │ 8.003   │ 1.43243 │ F2         │
│     1 │  3 │    7.33 │ null    │ null    │ F3         │
│     2 │  1 │  4.2004 │ 4.7008  │ 1.993   │ F1         │
│     2 │  2 │   6.009 │ 4.60333 │ 3.3243  │ F2         │
│     2 │  3 │    9.33 │ null    │ null    │ F3         │
│     3 │  1 │  10.204 │ 9.5008  │ .99383  │ F1         │
│     3 │  2 │ 52.6009 │ 8.003   │ 1.43243 │ F2         │
│     3 │  3 │   67.33 │ null    │ null    │ F3         │
│     4 │  1 │ 9.20704 │ 29.008  │ 3.9583  │ F1         │
│     4 │  2 │  45.009 │ 5.003   │ 1.243   │ F2         │
│     4 │  3 │   17.33 │ null    │ null    │ F3         │
└───────┴────┴─────────┴─────────┴─────────┴────────────┘

Answer 4

Try This..

select * from (select IDNUM,F1,F2,F3,E1,E2,H1,H2, null as E3,null as H3 from  T5) UnPivot((F,E,H) for sk in ((F1,E1,H1) as 'F1',
                          (F2,E2,H2) as 'F2',
                          (F3,E3,H3) as 'F3')) order by IDNUM,SK;