跟crakman做sas base认证试题（68）

shiyiming

From crackman's blog on Baidu


               
                <p><font size="4" face="宋体">70.After a SAS program is submitted, the following is written to the SAS log:<br>
<br>
  105&nbsp;&nbsp;&nbsp;  data WORK.JANUARY;<br>
  106&nbsp;&nbsp;&nbsp;  set WORK.ALLYEAR(keep=Product Month Quantity Cost);<br>
  107&nbsp;&nbsp;&nbsp;  if Month='JAN' then output WORK.JANUARY;<br>
  108&nbsp;&nbsp;&nbsp;  Sales=Cost * Quantity;<br>
  109&nbsp;&nbsp;&nbsp;  drop=Month Quantity Cost; <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  -----<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  22<br>
  ERROR 22-322: Syntax error, expecting one of the following: !,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  !!, &amp;, *, **, +, -,<br>
  , &lt;=, &lt;&gt;, =, &gt;, &gt;=,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  AND, EQ, GE, GT, IN, LE, LT, MAX, MIN, NE, NG, NL,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  NOTIN, OR, ^=, |, ||, ~=.<br>
  110  run;<br>
<br>
What data set option could be attached to WORK.JANUARY to replace the DROP statement that generated the error in the log?</font></p>
<p><font size="4" face="宋体">&nbsp;&nbsp;&nbsp;&nbsp;  A. (drop Month  Quantity  Cost)<br>
&nbsp;&nbsp;&nbsp;&nbsp;  B. (drop Month, Quantity, Cost)<br>
&nbsp;&nbsp;&nbsp;&nbsp;  C. (drop=Month, Quantity, Cost)<br>
&nbsp;&nbsp;&nbsp;&nbsp;  D. (drop=Month  Quantity  Cost)</font></p>
<p><font size="4" face="宋体">Answer: D</font></p>
<p><font size="4" face="宋体">DROP语句，在DATA STATEMENT中，不需要等号<br>
在SET 语句中，需要括号以及等号。</font></p> <a href="http://hi.baidu.com/crack%5Fman/blog/item/0e1e1cca054ab529b700c8c6.html">阅读全文</a>
               
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shiyiming

答案是A
笔误