PROC SORT DATA=数据集名字 OUT=排序后的数据集名字 NODUPLICATES; BY 排序所依据的变量名1; BY 排序所依据的变量名2; RUN; 两个变量名说明是排序后再排序,先按照变量1排序,再按照变量2排序,以上默认是升序。其中DATA=是原来的数据集,OUTPUT=是排序后新的数据集,NODUPLICATES参数的意思是“没有重复”,也就是...
下面的代码告诉SAS对数据messy排序,并将排序后的数据存在neat中: PROC SORT DATA=messy OUT=neat; 选项nodupkey告诉SAS排序时删除重复值,比如: PROC 因为SAS认为缺失值是比字符串和数值都小,所以排在了第一位。另外,由于whale shark 40的数据有两个,故因为nodupkey选项而被删除一个。说明可见日志: ? 也可以用...
在SAS中,可以通过使用DATA步骤和计算语句来创建新的sum和percent列。 首先,我们需要使用DATA步骤来创建一个新的数据集,并定义需要的变量。假设我们有一个名为"dataset"的数据集...
data unique duplicates; set readin; by id; if first.id = 1 and last.id = 1 then output unique; else output duplicates; run; The DATA statement creates two temporary SAS data sets:DUPLICATES AND UNIQUE. The SET statement reads observations from data setREADIN. The BY statement tells SAS ...
PROC SORT In PROC SORT, there are two options by which we can remove duplicates. 1. NODUPKEY Option 2. NODUP Option The NODUPKEY option removes duplicate observations where value of a variable listed in BY statement is repeated while NODUP option removes duplicate observations where values in...
I am not sure this is the best way to do this and if so, basically I am not sure whether to place the 'PROC SORT' step, inside or outside of the 'PROC TRANSPOSE' step. Any help much appreciated. Thanks! sas duplicates transpose Share Improve this question Follow edited Jun 4, 201...
1 SAS运算符介绍 ?定义：SAS运算符是一些符号?算术运算符?比较运算符?逻辑运算符 ?SAS使用两种主要类型的运算符：?前缀算符?中缀算符 2 ?前缀运算符用于变量、常数、函数或者用括号括起来的表达式。?前缀算符有：加号，减号，NOT和符号^(等价于not)。?例如：+Y-25-COS(A)-(x1+x2-100)?中缀运算符作用在...
PROCSORT DATA=SAS-data-set-name NODUPRECS; Because NODUPRECS checksonly consecutive observations, some nonconsecutive duplicate observations might remain in the output data set. You can remove allduplicates with this option by sorting on all variables.(这个选项只对连续的重复值有效,不连续的就不会...
; Run; 较为有用的可选项有: (1)noduplicates/noduprec/nodup,在排序之后,检查和删除相邻的重复观测注意:此选项不同于nodupkey,它比较的是整个观测,而不仅仅是by的关键值(2)nodupkey,检查和删除by的关键值重复的观测 例几个记录组合信息 proc sort data= out=lstkinfo; by stktype; data a; set lstk...
if count >1 then it's a duplicate; if count=1 then output; run; proc print data=nodups; run; 0 Likes PeterClemmensen Tourmaline | Level 20 Re: remove duplicates with out sort Posted 06-16-2021 10:40 AM (1845 views) | In reply to tarheel13 That would require sorting? The ...