摘要: 数据挖掘步骤及相关资料推荐 阅读全文
posted @ 2018-02-15 16:41 Jane_lau 阅读(374) 评论(0) 推荐(0) 编辑
摘要: 一.运用By语句 proc sort data=data-set1 out=data-set2; by var1; run; proc sort data=data-set3 out=data-set4; by var1; run; data data-set5; merge data-set2 d 阅读全文
posted @ 2018-02-15 00:56 Jane_lau 阅读(550) 评论(0) 推荐(0) 编辑