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PostgreSQL Q&A 9962 게시물 읽기
No. 9962
[질문]세로데이터를 가로로 바꿀려고합니다.
작성자
차상환
작성일
2018-04-03 16:34ⓒ
2018-04-03 16:51ⓜ
조회수
6,162

WITH DT AS

(

SELECT 1 AS M_RN, 'A' AS COL1, 'a' AS COL2 FROM DUAL

UNION ALL SELECT 2 AS M_RN, 'B' AS COL1, 'b' AS COL2 FROM DUAL

UNION ALL SELECT 3 AS M_RN, 'C' AS COL1, 'c' AS COL2 FROM DUAL

UNION ALL SELECT 4 AS M_RN, 'D' AS COL1, 'd' AS COL2 FROM DUAL

UNION ALL SELECT 5 AS M_RN, 'E' AS COL1, 'e' AS COL2 FROM DUAL

UNION ALL SELECT 6 AS M_RN, 'F' AS COL1, 'f' AS COL2 FROM DUAL

UNION ALL SELECT 7 AS M_RN, 'G' AS COL1, 'g' AS COL2 FROM DUAL

UNION ALL SELECT 8 AS M_RN, 'H' AS COL1, 'h' AS COL2 FROM DUAL

UNION ALL SELECT 9 AS M_RN, 'I' AS COL1, 'i' AS COL2 FROM DUAL

UNION ALL SELECT 10 AS M_RN, 'J' AS COL1, 'j' AS COL2 FROM DUAL

UNION ALL SELECT 11 AS M_RN, 'K' AS COL1, 'k' AS COL2 FROM DUAL

UNION ALL SELECT 12 AS M_RN, 'L' AS COL1, 'l' AS COL2 FROM DUAL

)

SELECT * FROM DT

 

위 데이터를 M_RN기준으로 가로로 조회하고 싶어 문의 드립니다.

 

C1 | C2 | C3 | C4 | C5 | C6 | ... | C12

A | B | C | D | E | F | ... | L

a | b | c | d | e | f | ... | l

 

 

 

 

 

 

 

 

이 글에 대한 댓글이 총 2건 있습니다.

WITH dt AS
(
SELECT 1 m_rn, 'A' col1, 'a' col2
UNION ALL SELECT  2, 'B', 'b'
UNION ALL SELECT  3, 'C', 'c'
UNION ALL SELECT  4, 'D', 'd'
UNION ALL SELECT  5, 'E', 'e'
UNION ALL SELECT  6, 'F', 'f'
UNION ALL SELECT  7, 'G', 'g'
UNION ALL SELECT  8, 'H', 'h'
UNION ALL SELECT  9, 'I', 'i'
UNION ALL SELECT 10, 'J', 'j'
UNION ALL SELECT 11, 'K', 'k'
UNION ALL SELECT 12, 'L', 'l'
)
SELECT lv
     , MIN(CASE m_rn WHEN  1 THEN c END) c01
     , MIN(CASE m_rn WHEN  2 THEN c END) c02
     , MIN(CASE m_rn WHEN  3 THEN c END) c03
     , MIN(CASE m_rn WHEN  4 THEN c END) c04
     , MIN(CASE m_rn WHEN  5 THEN c END) c05
     , MIN(CASE m_rn WHEN  6 THEN c END) c06
     , MIN(CASE m_rn WHEN  7 THEN c END) c07
     , MIN(CASE m_rn WHEN  8 THEN c END) c08
     , MIN(CASE m_rn WHEN  9 THEN c END) c09
     , MIN(CASE m_rn WHEN 10 THEN c END) c10
     , MIN(CASE m_rn WHEN 11 THEN c END) c11
     , MIN(CASE m_rn WHEN 12 THEN c END) c12
  FROM (SELECT m_rn
             , lv
             , CASE lv WHEN 1 THEN col1 WHEN 2 THEN col2 END c
          FROM dt
             , (SELECT 1 lv UNION ALL SELECT 2) a
        ) a
 GROUP BY lv
 ORDER BY lv
;

마농(manon94)님이 2018-04-03 18:32에 작성한 댓글입니다.

감사합니다.

차상환님이 2018-04-04 08:00에 작성한 댓글입니다. Edit
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