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Download MySQL 8.0 Database Developer Exam Dumps
NEW QUESTION 54
You must reclaim memory used by a prepared statement named prep. Which two achieve this?
- A. DEALLOCATE PREPARE prep?
- B. DROP PROCEDURE prep;
- C. DROP PREPARE prep;
- D. SET @prep = NULL;
- E. SET @a = ''; EXECUTE prep USING @a;
- F. PREPARE prep FROM '';
Answer: B,D
NEW QUESTION 55
Examine the content of the employee table:
Now examine this PHP script:
Finally examine this desired output:
- A. $options = [PDO:: ATTR_DEFAOLT_FETCH__MODE => PDO : : FETCH_BOTH] ;
- B. $options = [PDO:: ATTR__DEFAULT_FETCH MODE => PDO: :FETCH_CLASS] ;
- C. $options = [PDO:: ATTR_DEFAUXT_FETCH__MODE => PDO: : PDO: :FETCH_OBJ] ;
- D. $options = [PDO:: ATTR_DEFAULT_FETCH__MODE => PDO: : FETCH_ASSOC] ;
Answer: A
NEW QUESTION 56
Examine these statements which execute successfully:
The statements executed without exception. Which two are true?
- A. No transaction commits.
- B. No row is inserted into band.
- C. Two transactions commit.
- D. One row is inserted into band.
- E. The transaction is rolled back to the savepoint.
Answer: A,D
NEW QUESTION 57
The employee table includes these columns:
e_id INT, e_name VARCHAR (45), dept_id INT salart INT
You must create a stored function, getMaxSalary(), which returns the maximum salary paid for a given department id.
Which statement will create the function?
- A.
- B.
- C.
- D.
Answer: C
NEW QUESTION 58
Which two statements are true about aggregate functions?
- A. MAX () returns null if there are no rows to aggregate.
- B. MIN () cannot use distinct when it executes as a Windows function.
- C. COUNT (distinct) returns a count of the number of rows with different values including Null.
- D. AVG () does not allow use of the distinct option.
- E. SUM () returns o if there are no rows to aggregate.
Answer: D
NEW QUESTION 59
......
