SELECT *FROM (SELECT 分组的字段名,
ROW_NUMBER() OVER(PARTITION BY 分组的字段名 ORDER BY 排序的字段名) AS RN,其它想要的字段 FROM 表名)WHERE RN <= 10??
oracle分组获取前几条数据
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转载自gaochunhu.iteye.com/blog/2370490
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