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标题: 跟crakman做sas base认证试题（37） [打印本页]

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作者: shiyiming    时间: 2010-11-12 16:25
标题: 跟crakman做sas base认证试题（37）
From crackman's blog on Baidu


               
                <p><font size="4">37.The SAS data set SASUSER.HOUSES contains a variable Open_Date which has<br>
been assigned a permanent label of &quot;Open Date&quot;. Which SAS program temporarily<br>
replaces the label &quot;Open Date&quot; with the label &quot;Starting Date&quot; in the output?</font></p>
<p><font size="4">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  A.<br>
proc print data=SASUSER.HOUSES label; <br>
  label Open_Date &quot;Starting Date&quot;;<br>
run; <br>
<br>
&nbsp;&nbsp;&nbsp;&nbsp;  B.<br>
proc print data=SASUSER.HOUSES label; <br>
  label Open_Date=&quot;Starting Date&quot;;<br>
run; <br>
<br>
&nbsp;&nbsp;&nbsp;&nbsp;  C.<br>
proc print data=SASUSER.HOUSES; <br>
  label Open_Date=&quot;Starting Date&quot;;<br>
run; <br>
<br>
&nbsp;&nbsp;&nbsp;&nbsp;  D.<br>
proc print data=SASUSER.HOUSES; <br>
  Open_Date=&quot;Starting Date&quot;;<br>
run; <br>
<br>
Answer: B</font></p>
<p><font size="4">这道题考察LABEL语句<br>
本题的意思数据集SASUSER.HOUSES中变量OPEC_DATE本身已经有了一个LABEL，现在想在输出时更改此变量标签为&ldquo;Starting Date&rdquo;<br>
这里考察就是LEBEL语句格式，很简单，答案就是B。<br>
LABEL varname=&quot;label name&quot;;</font></p> <a href="http://hi.baidu.com/crack%5Fman/blog/item/0ee3763ac3c79a2d71cf6cb3.html">阅读全文</a>
               
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