比如我们想要筛选出数据集中男性的身高结果和女性中身高大于等于165的结果,并且要合并这两种结果,那么我们就可以采用outer union corr 竖向拼接法,具体如下: proc sql noprint; create table class1 as select name,sex,height from class where sex="男" outer union corr select name,sex,height from class wher...
在SAS中,可以使用UNION、UNION ALL、INTERSECT和EXCEPT等关键字来实现不同变量的联合操作。 UNION:将两个或多个查询结果合并为一个结果集,同时去除重复的行。例如: 代码语言:txt 复制 proc sql; select variable1 from dataset1 union select variable2 from dataset2; quit; 这个查询将返回dataset1中的variable1和...
11. How to Write Multiple Conditions/Criteria in PROC SQL TheCASE WHENstatement is used in SQL to perform conditional logic and return different values based on specified conditions. TheENDstatement is required when using theCASE WHENstatement. PROC SQL; SELECT WEIGHT, CASE WHEN WEIGHT BETWEEN 0 ...
proc sql; create table want as select *, count(id) as Total_Admissions, count(distinct(id)) as Total_Patients from ( select *,count(*) as Admissions_Per_Patient from ( select id, admsn_dt from have1 union corr select id, admsn_dt from have2 ) group by id ...
proc sql; create table want as select *, count(id) as Total_Admissions, count(distinct(id)) as Total_Patients from ( select *,count(*) as Admissions_Per_Patient from ( select id, admsn_dt from have1 union corr select id, admsn_dt from have2 ) group by id ...