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<b>QUESTION 121 </b>
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<p>The EMPLOYEES table contains these columns: </p><table border="1" bordercolor="gray">
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<p><b>The EMPLOYEES table </b></p>
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<p><b>EMPLOYEE_ID NUMBER(4) </b></p>
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<p><b>ENAME VARCHAR2 (25) </b></p>
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<p><b>JOB_ID VARCHAR2(10) </b></p>
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<p>Which SQL statement will return the ENAME, length of the ENAME, and the numeric position of the letter "a" in the ENAME column, for those employees whose ENAME ends with a the letter "n"? </p><table border="1" bordercolor="gray" width="665">
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<p><b><input type="radio" name="AN" value="A"> A.</b></p>
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<p> SELECT ENAME, LENGTH(ENAME), INSTR(ENAME, 'a') FROM EMPLOYEES <br>
WHERE SUBSTR(ENAME, -1, 1) = 'n';
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<p><b><input type="radio" name="AN" value="B"> B.</b></p>
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<p> SELECT ENAME, LENGTH(ENAME), INSTR(ENAME, ,-1,1) FROM EMPLOYEES <br>
WHERE SUBSTR(ENAME, -1, 1) = 'n';
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<p><b><input type="radio" name="AN" value="C"> C.</b></p>
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<p> SELECT ENAME, LENGTH(ENAME), SUBSTR(ENAME, -1,1) FROM EMPLOYEES <br>
WHERE INSTR(ENAME, 1, 1) = 'n';
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<p><b><input type="radio" name="AN" value="D"> D.</b></p>
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<p> SELECT ENAME, LENGTH(ENAME), SUBSTR(ENAME, -1,1) FROM EMPLOYEES <br>
WHERE INSTR(ENAME, -1, 1) = 'n';</b></p>
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