为什么varnum在sas中停止proc内容？

Question

我有以下代码

ods select Variables;  
    proc contents data=xmlout.&XML_DSET;
    run;

ods pdf open语句在代码中较早

ods pdf file="&exceldir\README.pdf" startpage=never;
title 'README FILE';

这需要xmlout.&XML_DSET并且很好地将它放在pdf中(ods pdf close;稍后在代码中).

然而!

如果我把varnum按顺序放在数据集中就像变量一样存在

ods select Variables;  
    proc contents data=xmlout.&XML_DSET varnum;
    run;

pdf根本不显示结果!

我究竟做错了什么？

谢谢!

Answer 1

看起来当您添加VARNUM选项时,不会创建VARIABLES输出对象,而是创建名为POSITION的输出对象.查找过程生成的不同对象的最简单方法是使用ODS TRACE:

52   ods trace on;
53   proc contents data=sashelp.class;
54   run;


Output Added:
-------------
Name:       Attributes
Label:      Attributes
Template:   Base.Contents.Attributes
Path:       Contents.DataSet.Attributes
-------------

Output Added:
-------------
Name:       EngineHost
Label:      Engine/Host Information
Template:   Base.Contents.EngineHost
Path:       Contents.DataSet.EngineHost
-------------

Output Added:
-------------
Name:       Variables
Label:      Variables
Template:   Base.Contents.Variables
Path:       Contents.DataSet.Variables
-------------

55
56   proc contents data=sashelp.class varnum;
57   run;


Output Added:
-------------
Name:       Attributes
Label:      Attributes
Template:   Base.Contents.Attributes
Path:       Contents.DataSet.Attributes
-------------

Output Added:
-------------
Name:       EngineHost
Label:      Engine/Host Information
Template:   Base.Contents.EngineHost
Path:       Contents.DataSet.EngineHost
-------------

Output Added:
-------------
Name:       Position
Label:      Varnum
Template:   Base.Contents.Position
Path:       Contents.DataSet.Position
-------------

58   ods trace off;

看到这一点,您可以将代码更改为SELECT the Position输出对象,即:

ods select position;    
proc contents data=sashelp.class varnum;
run;
ods select all;