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Oracle Database SQL Sample Questions (Q320-Q325):

NEW QUESTION # 320
Examine the description of the ENPLOYES table:

Which query requires explicit data type conversion?

A. SELECT SUBSTR(join date, 1, 2) - 10 FROM employees;
B. SELECT join_date FROM employees WHERE join date > '10-02-2018';
C. SELECT join_date 11.'11 salary FROM employees;
D. SELECT join_date + '20' EROM employees;
E. SELECT salary + '120.50' FROM employees;

Answer: B

NEW QUESTION # 321
Examine the commands used to create DEPARTMENT_DETAILSand COURSE_DETAILS tables:

You want to generate a list of all department IDs along with any course IDs that may have been assigned to them.
Which SQL statement must you use?
SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER JOIN

A. department_details d ON (c.department_id=d. department_id);
SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER JOIN
B. course_details c ON (d.department_id=c. department_id);
SELECT d.department_id, c.course_id FROM department_details d LEFT OUTER JOIN
C. course_details c ON (c.department_id=d. department_id);
D. course_details c ON (d.department_id=c. department_id);
SELECT d.department_id, c.course_id FROM course_details c LEFT OUTER JOIN

Answer: D

NEW QUESTION # 322
You need to list the employees in DEPARTMENT_ID 20 days in a single row, ordered by HIRE_DATE.
Examine the sample output:

Which query will provide the required output?

A. SELECT LISTAGG(last_name, '; ') "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30; ORDER BY (hire_date);
B. SELECT LISTAGG(last_name)
WITHIN GROUP ORDER BY (hire_date) "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30;
C. SELECT LISTAGG(last_name, '; ') "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30; WITHIN GROUP ORDER BY (hire_date);
D. SELECT LISTAGG(last_name, '; ')
WITHIN GROUP ORDER BY (hire_date) "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30;

Answer: D

NEW QUESTION # 323
Examine the structure of the MARKS table:

Which two statements would execute successfully? (Choose two.)

A. SELECT student_name subject1FROM marksWHERE subject1 > AVG(subject1);
B. SELECT SUM(DISTINCT NVL(subject1,0)), MAX(subject1)FROM marksWHERE subject1 > subject2;
C. SELECT SUM(subject1+subject2+subject3)FROM marksWHERE student_name IS NULL;
D. SELECT student_name,SUM(subject1)FROM marksWHERE student_name LIKE 'R%';

Answer: B,C

NEW QUESTION # 324
Evaluate the following statement.

Which statement is true regarding the evaluation of rows returned by the subquery in the INSERT statement?

A. Each row is evaluated by the first WHEN clause and if the condition is false then the row would be evaluated by the subsequent when clauses.
B. The INSERT statement will return an error because the ELSE clause is missing.
C. Each row is evaluated by the first WHEN clause and if the condition is true, then the row would be evaluated by the subsequent when clauses.
D. All rows are evaluated by all the three WHEN clauses.

Answer: D

NEW QUESTION # 325
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