2. When you reference a macro variable in a SAS program, SASreplaces the reference with the text valuethat has been assigned to that macro variable. By substituting text into programs, SAS macro variables make
A macro variable does not belong to a data set, and its value is always character. This value could be a variable name, a numeral, or any text that you want substituted into your program. (宏变量不属于数据集而变量都是属于数据集) 2.按定义方式可分为两类: 1).Automatic Macro Variables:...
%put &Sqlobs Names added to Macro variable (array) %nrstr(&NAMES) ; 这里第二行的names宏变量就是包含了SASHelp.class表中的全部name的值,并且以" "分隔开。 为了演示SCAN与%SCAN的区别,我们看一看下面两个例子: data _null_; test="AA...
Re: macro variable in sql statement Posted 06-15-2022 04:35 PM (829 views) | In reply to HB @HB wrote:Really SAS? Really? You're going to do that to me? Single vs double quotes. LOL.Thanks a ton, works a treat. Think it through. How else so you make a string that actual...
i) creates another macro variable with a value equal to the checked word; ii) concatenates this word with the previously checked chain of distinct words, thus, making finally a new macro variable containing all distinct words from the original string placed in the original order without duplicatio...
Local & Global : Local macro variable is defined insides the macro, which can be used only in the macro. Global macro is defined outsides the macro, which can be used exerywhere in the program. Local macro variable 可以被转换成 Global macro variable, 反之亦然。生成全局或局部宏变量:%glob...
The macro variable STATEMENT should resolve to: proc print data = sashelp.class;Which of the following statements successfully creates this result?A.%let statement = proc print data = sashelp.class;;B.%let statement = proc print data = sashelp.class;;...
3) 因为%STR的作用发生在编译期间,所以它往往用来屏蔽一个常字符串(constant string)。类似于%str(&a)的写法其实没有太大的意义: %macro test(val); %let a= %str(&val); data _null_; set sashelp.vmacro; if name = 'A' then put value $hex10.; run; %mend test; %test(a+b); === ...
宏处理器(macro processor)会进行如下工作 examines these tokens requests additional tokens as necessary performs the action indicated. 对于宏变量,宏处理器会做以下几件事 creates a macro variable in the symbol table and assigns a value to the variable ...
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