que_014.htm

来自「oracle　DBA的资料」· HTM 代码 · 共 71 行

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<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312">
<title>Ocp test </title>
</head>
<body bgcolor="white" text="black" link="blue" vlink="purple" alink="red">
<p align="left" color="black" style="font-size:16pt;">
	<b>QUESTION 014	
</b></p><hr color="#99CCFF">

<p>Evaluate the SQL statement: </p><p>1 SELECT a.emp_name, a.sal, a.dept_id, b.maxsal <br>
2 FROM employees a, <br>
3 &nbsp;&nbsp;&nbsp;(SELECT dept_id, MAX(sal) maxsal 
<br>4. &nbsp;&nbsp;&nbsp;FROM employees <br>
5 &nbsp;&nbsp;&nbsp;&nbsp;GROUP BY dept_id) b <br>
6 WHERE a.dept_id = b.dept_id 
<br>7 AND a.sal &lt; b.maxsal; <br>
What is the result of the statement?</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 statement produces an error at line 1. 
			</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 statement produces an error at line 3. 
			</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>   The statement produces an error at line 6. 
			</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>   The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all departments that pay less salary then the maximum salary paid in the company. 
			</p>
		</td>
	</tr>
	<tr>
		<td align="center" width="89">
			<p><b><input type="radio" name="AN" value="E">  E.</b></p>
		</td>
		<td align="left" width="566">
			<p>   The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all employees who earn less than the maximum salary in their department.</p>
		</td>
	</tr>
	</span>
	</form>
</table>

<br></body>
</html>

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