跟crakman做sas base认证试题（23）

shiyiming

From crackman's blog on Baidu


               
                <p><font size="4">23.Which is a valid LIBNAME statement?<br>
&nbsp;&nbsp;&nbsp;&nbsp;  A. libname &quot;_SAS_data_library_location_&quot;;<br>
&nbsp;&nbsp;&nbsp;&nbsp;  B. sasdata libname &quot;_SAS_data_library_location_&quot;;<br>
&nbsp;&nbsp;&nbsp;&nbsp;  C. libname sasdata &quot;_SAS_data_library_location_&quot;;<br>
&nbsp;&nbsp;&nbsp;&nbsp;  D. libname sasdata sas &quot;_SAS_data_library_location_&quot;;</font></p>
<p><font size="4">Answer: C<br>
本题考察的是libname语句建立逻辑库。</font></p>
<p><font size="4">LIBNAME libref &lt;engine&gt; 'SAS-data-library'  <br>
LIBNAME libref &lt;engine&gt; ('SAS-data-library-1' &lt;,...'SAS-data-library-n')&gt;;  <br>
语句格式如上，显示Libname，然后是名字，可有可无的&lt;engine&gt;.<br>
D选项中sas本身就是错误，及时engine里面也没有sas这个参数</font></p> <a href="http://hi.baidu.com/crack%5Fman/blog/item/fef5283bc9ff3cfc55e7239e.html">阅读全文</a>
               
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