列转行
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表中数据列转行
SELECT PEOPLE_NAME,
MAX(DECODE(RN, 1, ILL_NAME, NULL)) AS ILL_NAME1,
MAX(DECODE(RN, 2, ILL_NAME, NULL)) AS ILL_NAME2,
MAX(DECODE(RN, 3, ILL_NAME, NULL)) AS ILL_NAME3,
MAX(DECODE(RN, 4, ILL_NAME, NULL)) AS ILL_NAME4
FROM (SELECT A.PEOPLE_NAME,
A.ILL_NAME,
ROW_NUMBER() OVER(PARTITION BY PEOPLE_NAME ORDER BY ILL_NAME) AS RN
FROM ILL_NAME A) T
GROUP BY PEOPLE_NAME
ORDER BY 1
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