ORACLE XMLAGG

DB CAFE

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DBA { Oracle DBA 명령어 > DBA 초급 과정 > DBA 고급 과정 }
튜닝 { 오라클 튜닝 목록 }
모델링 { 데이터 모델링 가이드 }

--가상 테이블
WITH TEST_TABLE AS (
    SELECT '고구려' COUNTRY, '1대' ST, '동명성왕'   KING_NM FROM DUAL UNION ALL
    SELECT '고구려' COUNTRY, '3대' ST, '대무신왕'   KING_NM FROM DUAL UNION ALL
    SELECT '백제'   COUNTRY, '1대' ST, '온조왕'     KING_NM FROM DUAL UNION ALL
    SELECT '고구려' COUNTRY, '2대' ST, '유리왕'     KING_NM FROM DUAL UNION ALL
    SELECT '백제'   COUNTRY, '3대' ST, '기루왕'     KING_NM FROM DUAL UNION ALL
    SELECT '신라'   COUNTRY, '2대' ST, '남해왕'     KING_NM FROM DUAL UNION ALL
    SELECT '신라'   COUNTRY, '1대' ST, '박혁거세'   KING_NM FROM DUAL UNION ALL
    SELECT '백제'   COUNTRY, '2대' ST, '다루왕'     KING_NM FROM DUAL UNION ALL
    SELECT '신라'   COUNTRY, '3대' ST, '유리이사금' KING_NM FROM DUAL
)

--조회 쿼리
SELECT COUNTRY
     , SUBSTR(
              XMLAGG(
                     XMLELEMENT(COL ,',', KING_NM) ORDER BY ST
                    ).EXTRACT('//text()').GETSTRINGVAL()
          , 2) KING_NM
  FROM TEST_TABLE
 GROUP BY COUNTRY

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