CODEWITHSUNDEEP
sqloracle-databaseoracle11gunpivot
Tommy O'Dell
Tommy O'Dell

Reputation: 7109

Oracle 11g: Unpivot multiple columns and include column name

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 NUMBER(10,5)
                 ,e1 NUMBER(10,5),e2 NUMBER(10,5)
                 ,h1 NUMBER(10,5),h2 NUMBER(10,5));

INSERT INTO T5 (IDNUM,F1,F2,F3,E1,E2,H1,H2) 
VALUES (1,'10.2004','5.009','7.330','9.008','8.003','.99383','1.43243');
INSERT INTO T5 (IDNUM,F1,F2,F3,E1,E2,H1,H2
VALUES (2,'4.2004','6.009','9.330','4.7008','4.60333','1.993','3.3243');
INSERT INTO T5 (IDNUM,F1,F2,F3,E1,E2,H1,H2)
VALUES (3,'10.2040','52.6009','67.330','9.5008','8.003','.99383','1.43243');
INSERT INTO T5 (IDNUM,F1,F2,F3,E1,E2,H1,H2)
VALUES (4,'9.20704','45.009','17.330','29.008','5.003','3.9583','1.243');

COMMIT;

select * from t5;

IDNUM    F1    F2     F3        E1      E2       H1     H2

1   10.2004 5.009   7.33    9.008   8.003   0.99383 1.43243
2   4.2004  6.009   9.33    4.7008  4.60333 1.993   3.3243
3   10.204  52.6009 67.33   9.5008  8.003   0.99383 1.43243
4   9.20704 45.009  17.33   29.008  5.003   3.9583  1.243

I'm unpivoting like so...

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 1,
                              (F2,E2,H2) as 2,
                              (F3,E3,H3) as 3))
order by IDNUM,SK;

IDNUM  SK        F        E        H
-----  --  -------  -------  -------
    1   1  10.2004    9.008   .99383
    1   2    5.009    8.003  1.43243
    1   3     7.33     null     null
    2   1   4.2004   4.7008    1.993
    2   2    6.009  4.60333   3.3243
    2   3     9.33     null     null
    3   1   10.204   9.5008   .99383
    3   2  52.6009    8.003  1.43243
    3   3    67.33     null     null
    4   1  9.20704   29.008   3.9583
    4   2   45.009    5.003    1.243
    4   3    17.33     null     null

But what I really need is as follows...

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

How can I do this?

Upvotes: 14

Views: 64348

Answers (4)

D-Ivanov
D-Ivanov

Reputation: 171

Change your UNPIVOT to be like this

select *
from (
  select IDNUM,F1,F2,F3,E1,E2,H1,H2,
    null as E3,null as H3
  from T5
) 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

Upvotes: 17

Lukasz Szozda
Lukasz Szozda

Reputation: 175716

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         │
└───────┴────┴─────────┴─────────┴─────────┴────────────┘

Upvotes: 2

Fkhan
Fkhan

Reputation: 11

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;

Upvotes: 1

kubanczyk
kubanczyk

Reputation: 5941

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

Upvotes: 3

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