(简译:BY 通过自动生成临时变量 FIRST.variable 和 LAST.variable 来识别数据集按照 BY group 中的变量分组后,每组的首行和末行) Use BY In a DATA Step The BY statement applies only to the SET, MERGE, MODIFY, or UPDATE statement that precedes it
With our data and AI platform, you can understand what’s happening with your data now, predict how to pivot seamlessly, and get results faster. Regardless of roles, everyone in your organization will feel the impact. Learn just how much your organization can save every year by getting a fr...
DATA new-data-set; MERGE data-set-1 data-set-2; BY variable-list; 注意,如果两个数据集有重叠的变量——除了BY变量,那么第二个数据集中的此变量会覆盖第一个数据集中的。 例子有一个巧克力店记录了每天所卖巧克力的类型以及数量,第一个文件sales data记录了所卖的巧克力代码和数量,第二个记录了巧克力代码...
SAS dataset 有很多针对数据集的选项(option),这些选项都有同名的 statement. 常见的有: options 和 statement 的功能和使用方法几乎一致,区别在于:statement 只能在 DATA step 中使用;options 在 DATA / PROC step 中都可以使用,既可以用于 read-in data 也可以用于 write-in data, 写法统一是DATA=dataset (opti...
例如 DATA a; 就是一个DATA Statement。DATA就是一个sas关键字，a就是一个sas名称。又比如 length x...
Clear and transparent insights from the most trusted data and AI partner. Fraud Solutions IoT Solutions Marketing Solutions Risk Solutions Solutions by Industry Detect and prevent fraud across channels with a unified approach to fraud, compliance and security. Our fraud solutions, powered by world-lead...
SAS® for Data Preparation and Data QualityHarness the power of clean, reliable data. SAS® In-Database TechnologiesShorten the time needed for key data quality and analytical processes by performing them within the database. Available for Hadoop Cloud Services, Cloudera Data Platform, Azure Syn...
data _NULL_ ; Automatic Naming: If you do not specify a SAS data set name or using _NULL_ in DATA statement, SAS automatically creates a data set with the names DATA1, DATA2 and so on to WORK or USER library. This is called DATAn naming convention; data;...
List input uses a scanning method for locating data values,data are not required to be aligned in columns but must be separated by at least blank or by the DLMspecified with the DLM= or DLMSTR= in the file statement. if you want SAS read consecutive delimiter as if there is a missing...
data example1; group = "太极组\围棋组\古筝组\书法组"; run; example1数据集 分别使用如下3种方法进行宏变量赋值: method1: let statement %let group1 = 太极组\围棋组\古筝组\书法组; %put &group1.; 日志信息 method2:data步call symput statement data _null_; set example1; call symput("...