2020年3月26日 · Most likely it is a special missing value. In addition to the normal missing value, which is represented by a period, SAS allows 27 special missing values. They are represented in code by period followed by a letter or underscore. In listing/printing the period is not displayed.

You can use a shorthand notation to specify a range of sequential integers to search. The range is specified by using the syntax M:N as a value in the list to search, where M is the lower bound and N is the upper bound. M and N must be integers, and M, N, and all the integers between M and N are included in the range.

/* correct coding */ do i=1 to 10; ... more SAS statements... end; The next example uses the TO and BY arguments. do i=1 to n by m; ... more SAS statements... if i=10 then leave; end; if i=10 then put 'EXITED LOOP'; Example 3: Stopping the Execution of the DO Loop

The 'm' tag at the beginning of the search string tells PRXMATCH that it is doing a matching operation, this is the default. The 'o' tag at the end tells SAS to compile the parse string once. This is also the default because the parse string is a constant.

本文介绍常用统计分析软件SAS，大多数研究者一听到SAS要编程，就想着会很难，但当你熟悉SAS软件的基本操作界面之后，基本上通过拷贝复制就能得到你想要的结果。 接下来详细介绍SAS的基本知识和界面操作。 主要功能是编辑SAS程序语句，并用不同的颜色显示SAS语句，同时进行语句的逻辑检查，如：出现红色字体，说明语句拼写有误，需要修改;深蓝色字体表示数据步或过程步的开始;浅蓝色表示关键语句;黄底色表示数据流。 主要作用是显示运行程序后的有关信 …

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sas 运算符： 注：sas中有的运算符有多种表示方法，可以选择自己习惯的使用； sas中的运算符. 1. 算术运算符： 加法（+）； 减法（-）； 乘法（*）； 除法（/）； 幂（**）；

2017年10月27日 · I'm not sure you showed us what you want this to resolve into: &&dsn&i._mst_tbl So I'll assume it should take the value &DSN1 (then &DSN2, then &DSN3, etc.), and append _mst_tbl at the end.

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