📄 que_036.htm
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<title>Ocp test </title>
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<b>QUESTION 036
</b></p><hr color="#99CCFF">
<p>Examine the structure if the EMPLOYEES and NEW EMPLOYEES tables: </p><table border="1" bordercolor="gray">
<tr>
<td align="left" width="486" bgcolor="#99CCFF">
<p><b>EMPLOYEES </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>HIRE_DATE DATE </b></p>
</td>
</tr>
</table>
<br><table border="1" bordercolor="gray">
<tr>
<td align="left" width="486" bgcolor="#99CCFF">
<p><b>NEW EMPLOYEES </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>NAME VARCHAR2(60) </b></p>
</td>
</tr>
</table>
<p>
</p>
<p>Which MERGE statement is valid? </p><table border="1" bordercolor="gray" width="665">
<form name="youAnsForm">
<span style="font-size:18pt;">
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<td align="center" width="89">
<p><b><input type="radio" name="AN" value="A"> A.</b></p>
</td>
<td align="left" width="566">
<p> MERGE INTO new_employees c <br>
USING employees e <br>
ON (c.employee_id = e.employee_id) <br>
WHEN MATCHED THEN <br>
UPDATE SET c.name = e.first_name ||','|| e.last_name <br>
WHEN NOT MATCHED THEN <br>
INSERT VALUES(e.employee_id, <br>
e.first_name ||','||e.last_name);
</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> MERGE new_employees c <br>
USING employees e <br>
ON (c.employee_id = e.employee_id) <br>
WHEN EXIST THEN <br>
UPDATE SET c.name = e.first_name ||','|| e.last_name <br>
WHEN NOT MATCHED THEN <br>
INSERT VALUES(e.employee_id, <br>
e.first_name ||','||e.last_name);
</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> MERGE INTO new employees c <br>
USING employees e <br>
ON (c.employee_id = e.employee_id) <br>
WHEN EXISTS THEN <br>
UPDATE SET c.name = e.first_name ||','|| e.last_name <br>
WHEN NOT MATCHED THEN <br>
INSERT VALUES(e.employee_id, <br>
e.first_name ||','||e.last_name);
</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> MERGE new_employees c <br>
FROM employees e <br>
ON (c.employee_id = e.employee_id) <br>
WHEN MATCHED THEN <br>
UPDATE SET c.name = e.first_name ||','|| e.last_name <br>
WHEN NOT MATCHED THEN <br>
INSERT INTO new_employees <br>
VALUES(e.employee_id, <br> e.first_name ||'.'||e.last_name);
</p>
</td>
</tr>
</span>
</form>
</table>
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