📄 que_071.htm
字号:
<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 071
</b></p><hr color="#99CCFF">
<p>Examine the structure of the EMPLOYEES table: </p><table border="1" bordercolor="gray">
<tr>
<td align="left" width="486" bgcolor="#99CCFF">
<p><b>EMPLOYEES table: </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>EMPLOYEE_ID NUMBER Primary Key </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>FIRST_NAME VARCHAR2(25) </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>LAST_NAME VARCHAR2(25) </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>DEPARTMENT_ID NUMBER </b></p>
</td>
</tr>
<tr>
<td align="left" bgcolor="white">
<p><b>SALARY NUMBER </b></p>
</td>
</tr>
</table>
<p>What is the correct syntax for an inline view? </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.last_name, a.salary, a.department_id,
b.maxsal <br>
FROM employees a,
(SELECT department_id, max(salary)maxsal FROM employees <br>
GROUP BY department_id) b <br>
WHERE a.department_id = b.department_id <br>
AND a.salary < b.maxsal;
</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.last name, a.salary, a.department_id <br>
FROM employees a <br>
WHERE a.department_id IN <br> (SELECT department_id <br>
FROM employees b <br>
GROUP BY department_id <br>
HAVING salary =
(SELECT max(salary) <br> FROM employees))
</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.last_name, a.salary, a.department_id <br>
FROM employees a <br>
WHERE a.salary =
(SELECT max(salary) <br>
FROM employees b <br>
WHERE a.department_id = b.department_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 a.last_name, a.salary, a.department_id <br>
FROM employees a <br>
WHERE (a.department_id, a.salary) IN <br>
(SELECT department_id, a.salary) IN <br>
(SELECT department_id max(salary) <br>
FROM employees b <br>
GROUP BY department_id <br>
ORDER BY department_id);</p>
</td>
</tr>
</span>
</form>
</table>
<br></body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -