PROC SQL offers a lot of useful features, which includes, but is not limited to: 1) combine the functionality of DATA and PROC stepsinto one single step, 2) sort, summarize, join (merge) and concatenate datasets, 3)construct in-line views using the FROM and SELECT clauses, 4) line ...
PROC SQL INTO: order of values when creating a macro variable out of a character Posted 06-24-2013 03:10 AM (11080 views) Dear all,I have a quite simple step in my progam, where I create a macro variable which should contain values of the variable NAME (character)...
PROC SQL; SELECT COUNT(*) INTO:aVariable FROM MyTable ;QUIT; 在上面的例子中,aVariable 将表示 MyTable 中存在多少条记录。 你还可以使用 PROC SQL 创建多个宏变量。 PROC SQL; SELECT a, b, c INTO:aVariable, :bVariable, :cVariable FROM MyTable ;QUIT; 在上面的示例中,在 INTO 语句中创建的...
createone macro variablethat willhold all values ofa certain data setvariable. procsql noprint;selectdistinctlocationinto:sites separatedby''fromsasuser.schedule; quit; Global Symbol Table(符号表中,宏与宏值) SitesBoston Dallas Seattle Proc sql中不会进行自动的数据类型转换。对于你想要使用的数据类型要...
SYMBOLGEN: Macro variable I resolves to 0 MPRINT(VARX): select a1 into:a1 from b; MPRINT(VARX): quit; //从proc sql到这里就是宏varx编译生成的一段proc sql代码,这部分提交给sas运行。 NOTE: PROCEDURE SQL used (Total process time): ...
基本形式为: %LET macro-variable-name=value; 宏变量名必须符合SAS命名法则...; %IF condition%THEN%DO; SAS statements %END; 自动宏变量 每一次启动SAS,宏处理器自动创建一些宏变量,可以使用在程序中。...是变量名,value可以是一个变量名,该变量的值将分配给macro-variable-name,也可以是一个用引号括起来...
TITLE3 'Generating macro variables based on summary statistics'; TITLE4 'Exercise 6.1: Total resident count and facility count'; PROC SQL NOPRINT ; SELECT PUT(COUNT(*),COMMA8.) ,PUT(COUNT(DISTINCT PROVNUM),COMMA6.) INTO :totres ,:totfac FROM in.ressamp2014 ; QUIT; TITLE5 "The ...
INTO子句的作用是,将PROC SQL生成的值赋值给宏变量。 语法 我们来看一下INTO子句的具体语法: INTO :macro-variable-specification-1<, :macro-variable-specification-2...> macro-variable-specification,宏变量的说明,是要创建的一个或多个宏变量的名称,并且在每个宏变量名称前都需要添加一个冒号:。如果不添加冒...
Python是一种高级编程语言，提供了多个库，可以连接到MySQL数据库和执行SQL查询。
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