SELECT *, CASE WHEN age IS NULL THEN 'Unknown' WHEN age < 18 THEN 'Child' WHEN age >= 18 AND age < 65 THEN 'Adult' ELSE 'Senior' END AS category FROM input_data; 参考链接 SQL CASE Statement Tencent Cloud SQL Documentation 通过以上内容,你应该能够理解CASE WHEN语句的基础概...
Then the formats are used in the PUT statement to derive VISITNUM and PCTPTNUM. The purpose of adding “+0” is to convert VISITNUM data type to numeric form. It is automatic converted in the SAS. Though it maybe does not produce “Warning“...
When you use the SUBSTR function on the left side of an assignment statement, SAS replaces the value of variable with the expression on the right side. SUBSTR replaces length characters starting at the character that you specify in position. Example: 11、...
7:更新表格,case when的两种使用方式 部分更新和全表更新 procsql;updatework.payrollmaster_new2setsalary=salary*casesubstr(jobcode,3,1)when'1'then1.05when'2'then1.10when'3'then1.15else1.08end; quit; 8:更改表中的列 Toadd,drop(delete), ormodifycolumns in a table, use the ALTER TABLE statemen...
statement是符号,function是函数 用set复制数据后,变量名字是可以直接用的 infile input//file put WHILE/when/的条件不要有空格,如果是多级要用多个括号. when 没有then 宏定义注意事项和细节 0)宏定义实质:只替换,不计算。 1)宏定义是用宏名来表示一个字符串,在宏展开时又以该字符串取代宏名,这只是一种简...
An insert statement 3.Joining Tables Using PROC SQL inner join要用on natural join不能用on,自动识别相同的column name, 也是inner join的一种,只返回交集 outer join when only some of the values match to overlay common columns, must use thecoalescefunction in the proc sql full outer join ...
I am running a code and used intck to find the dates which are more than 6 months and which are less than 6 months using case when statement. My code runs fine but in the output it shows all data as less than six months even if it is there for more than six months. Can...
When you want to read the entire file, you can remove the obs= option entirely.A typical infile statement for reading a comma delimited file that contains the variable names in the first line of data would be:INFILE "test.txt" 47、 DLM=',' DSD MISSOVER FIRSTOBS=2 ; 读入有缺失值的...
SAS Health is an end-to-end enterprise solution for data integration, data management, automation and analytics. Consolidate your data under a faster and more productive AI and analytic platform that operates across the entire analytics life cycle, helping you address complex health care topics faste...
1:The PROC SQL stepdoes not require a RUN statement. PROC SQL executes each query automatically 2:Unlike many other SAS procedures, PROC SQLcontinues to run after you submit a step. To end the procedure, you must submit another PROC step, a DATA step, or a QUIT statement ...