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Valid Oracle 1z0-071 Test Questions, 1z0-071 Examcollection Questions Answers

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Oracle Database SQL Sample Questions (Q210-Q215):

NEW QUESTION # 210
View the exhibit and examine the description of the DEPARTMENTS and EMPLOYEES tables.

The retrieve data for all the employees for their EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, the following SQL statement was written:
SELECT employee_id, first_name, department_name
FROM employees
NATURAL JOIN departments;
The desired output is not obtained after executing the above SQL statement. What could be the reason for this?

A. The DEPARTMENTS table is not used before the EMPLOYEES table in the FROM clause.
B. The EMPLOYEES and DEPARTMENTS tables have more than one column with the same column name and data type.
C. The table prefix is missing for the column names in the SELECT clause.
D. The NATURAL JOIN clause is missing the USING clause.

Answer: B

Explanation:
Explanation
Natural join needs only one column to be the same in each table. The EMPLOYEES and DEPARTMENTS tables have two columns that are the same (Department_ID and Manager_ID)

NEW QUESTION # 211
Examine this query:
SELECT employee_id, first_name, salary
FROM employees
WHERE hiredate > 61*
Which two methods should yours to prevent prompting for hire date value when this queries executed?

A. Store the query in a script and pass the substitution value to the script when executing it.
B. Replace 's1' with &1'in the query:
C. Execute the SET VERIFY OFF command before executing the query.
D. Use the UNDEFINE command before executing the query.
E. Use the DEFINE command before executing the query
F. Execute the SET VERIFY ON command before executing the query.

Answer: A,E

NEW QUESTION # 212
You execute this query:
SELECT TO CHAR (NEXT_DAY(LAST_DAY(SYSDATE),'MON' ),' dd"Monday for" fmMonth rrr') FROM DUAL; What is the result?

A. It returns the date for the last Monday of the current month.
B. It executes successfully but does not return any result.
C. It returns the date for the first Monday of the next month.
D. It generates an error.

Answer: D

NEW QUESTION # 213
Which three are true about the MERGE statement?

A. It can combine rows from multiple tables conditionally to insert into a single table.
B. It can use views to produce source rows.
C. It can merge rows only from tables.
D. It can update, insert, or delete rows conditionally in multiple tables.
E. It can use subqueries to produce source rows.
F. It can update the same row of the target table multiple times.

Answer: B,D,E

NEW QUESTION # 214
View and Exhibit and examine the structure and data in the INVOICE table. (Choose two.)

Which two statements are true regarding data type conversion in query expressions?

A. inv_no BETWEEN '101' AND '110' : uses implicit conversion
B. inv_date = '15-february-2008' :uses implicit conversion
C. CONCAT(inv_amt, inv_date) : requires explicit conversion
D. inv_date > '01-02-2008' : uses implicit conversion
E. inv_amt = '0255982' : requires explicit conversion

Answer: A,B

NEW QUESTION # 215
......

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