que_055.htm
来自「oracle DBA的资料」· HTM 代码 · 共 59 行
HTM
59 行
<html>
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<meta http-equiv="content-type" content="text/html; charset=gb2312">
<title>Ocp test </title>
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<body bgcolor="white" text="black" link="blue" vlink="purple" alink="red">
<p align="left" color="black" style="font-size:16pt;">
<b>QUESTION 055
</b></p><hr color="#99CCFF">
<p>Evaluate this SQL statement:</p><p>SELECT e.employee_id, (.15* e.salary) + (.5 * e.commission_pct)
+<br> (s.sales amount * (.35 * e.bonus)) AS CALC_VALUE
<br>FROM employees e, sales s <br>
WHERE e.employee_id = s.emp_id; <br>
<br>What will happen if you remove all the parentheses from the calculation?</p><table border="1" bordercolor="gray" width="665">
<form name="youAnsForm">
<span style="font-size:18pt;">
<tr>
<td align="center" width="89">
<p><b><input type="radio" name="AN" value="A"> A.</b></p>
</td>
<td align="left" width="566">
<p> The value displayed in the CALC_VALUE column will be lower.
</p>
</td>
</tr>
<tr>
<td align="center" width="89">
<p><b><input type="radio" name="AN" value="B"> B.</b></p>
</td>
<td align="left" width="566">
<p> The value displayed in the CALC_VALUE column will be higher.
</p>
</td>
</tr>
<tr>
<td align="center" width="89">
<p><b><input type="radio" name="AN" value="C"> C.</b></p>
</td>
<td align="left" width="566">
<p> There will be no difference in the value displayed in the CALC_VALUE column.
</p>
</td>
</tr>
<tr>
<td align="center" width="89">
<p><b><input type="radio" name="AN" value="D"> D.</b></p>
</td>
<td align="left" width="566">
<p> An error will be reported.</p>
</td>
</tr>
</span>
</form>
</table>
<br></body>
</html>
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