que_149.htm

来自「oracle　DBA的资料」· HTM 代码 · 共 65 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 149	
</b></p><hr color="#99CCFF">

<p>You need to write a SQL statement that returns 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. 
Which statement accomplishes this task? </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> SELECT a.emp_name, a.sal, b.dept_id, MAX(sal) <br>FROM employees a, departments b <br>
			  WHERE a.dept_id = b.dept_id <br>AND a.sal &lt; MAX(sal) <br>GROUP BY b.dept_id; 
			</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>   SELECT a.emp_name, a.sal, a.dept_id, b.maxsal <br>FROM employees a, (SELECT dept_id, MAX(sal) maxsal <br> 
                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FROM employees <br> 
                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GROUP BY dept_id) b <br>WHERE a.dept_id = b.dept_id <br>
			  AND a.sal &lt; b.maxsal; 
			</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>   SELECT a.emp_name, a.sal, a.dept_id, b.maxsal <br>FROM employees a <br>WHERE a.sal &lt; (SELECT MAX(sal) maxsal <br> 
                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FROM employees b <br> 
                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GROUP BY dept_id); 
			</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>   SELECT emp_name, sal, dept_id, maxsal <br>FROM employees, (SELECT dept_id, MAX(sal) maxsal <br> 
                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FROM employees <br> 
                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GROUP BY dept_id) <br>WHERE a.sal &lt; maxsal;</p>
		</td>
	</tr>
	</span>
	</form>
</table>

<p>&nbsp;</p>
</body>
</html>

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