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Which of the following are true? (Choose Two)

Character values are not case-sensitive

Date values are format-sensitive

Date values are enclosed in single quotation marks

Character strings are enclosed in double quotation marks

Which of the following would be returned by this SELECT statement SELECT last_name, salary FROM employees WHERE salary < 3500;

LAST_NAME SALARY King 5000

LAST_NAME SALARY Rajas 3500

LAST_NAME SALARY Davies 3100

All of the above

Which query would give the following result? LAST_NAME FIRST_NAME DEPARTMENT_ID King Steven 90

SELECT last_name, first_name, department_id FROM employees WHERE last_name LIKE 'k%';

SELECT last_name, first_name, department_id FROM employees WHERE last_name LIKE 'KING';

SELECT last_name, first_name, department_id FROM employees WHERE last_name = 'King';

SELECT last_name, first_name, department_id FROM employees C WHERE last_name = 'KING';

Which SELECT statement will display both unique and non-unique combinations of the MANAGER_ID and DEPARTMENT_ID values from the EMPLOYEES table?

SELECT DISTINCT manager_id, department_id FROM employees;

SELECT manager_id, DISTINCT department_id FROM employees;

SELECT manager_id, department_id FROM employees;

SELECT manager_id, department_id DISTINCT FROM employees;

Which clause would you include in a SELECT statement to restrict the data returned to only the employees in department 10?

WHERE

FROM

SELECT

The concatenation operator ...

Brings together columns or character strings into other columns

Creates a resultant column that is a character expression

Is represented by two vertical bars ( || )

All of the above

You need to display employees whose salary is in the range of 30000 and 50000. Which comparison operator should you use?

BETWEEN...AND...

IS NULL

Which comparison condition would you use to select rows that match a character pattern?

ALMOST

SIMILAR

Which of the following WHERE clauses would not select the number 10?

WHERE hours <= 10

WHERE hours IN (8,9,10)

WHERE hours <>10

WHERE hours BETWEEN 10 AND 20

When using the "LIKE" operator, the % and _ symbols can be used to do a pattern-matching, wild card search. True or False?

True

False

If you write queries using the BETWEEN operator, it does not matter in what order you enter the values, I.e. BETWEEN low value AND high value will give the same result as BETWEEN high value and low value. True or False?

True

False

The EMPLOYEES table contains these columns: LAST_NAME VARCHAR2(25) FIRST_NAME VARCHAR2(25) EMAIL VARCHAR2(50) You are writing a SELECT statement to retrieve the names of employees that have an email address. SELECT last_name||', '||first_name "Employee Name" FROM employees; Which WHERE clause should you use to complete this statement?

WHERE email != NULL;

WHERE email IS NOT NULL;

WHERE email = NULL;

WHERE email IS NULL;

You need write a SELECT statement that should only return rows that contain 34, 46, or 48 for the DEPARTMENT_ID column. Which operator should you use in the WHERE clause to compare the DEPARTMENT_ID column to this specific list of values?

BETWEEN..AND..

You want to retrieve a list of customers whose last names begin with the letters 'Fr' . Which keyword should you include in the WHERE clause of your SELECT statement to achieve the desired result?

BETWEEN

AND

Evaluate this SELECT statement: SELECT * FROM employees WHERE department_id IN(10, 20, 30) AND salary > 20000; Which values would cause the logical condition to return TRUE?

DEPARTMENT_ID = 20 and SALARY = 20000

DEPARTMENT_ID = 10 and SALARY = 20000

DEPARTMENT_ID = 10 and SALARY = 20001

DEPARTMENT_ID = null and SALARY = 20001

Which of the following are true? (Choose Two)

Date values are enclosed in single quotation marks

Character strings are enclosed in double quotation marks

Date values are format-sensitive

Character values are not case-sensitive

True

False

WHERE email IS NOT NULL;

WHERE email IS NULL;

WHERE email = NULL;

WHERE email != NULL;

When using the "LIKE" operator, the % and _ symbols can be used to do a pattern-matching, wild card search. True or False?

True

False

Which of the following WHERE clauses would not select the number 10?

WHERE hours <= 10

WHERE hours <>10

WHERE hours BETWEEN 10 AND 20

WHERE hours IN (8,9,10)

Which two statements would select salaries that are greater than or equal to 2500 and less than or equal to 3500? (Choose two)

WHERE salary BETWEEN 3500 AND 2500

WHERE salary BETWEEN 2500 AND 3500

WHERE salary <=2500 AND salary >= 3500

WHERE salary >= 2500 AND salary <= 3500

You need to display employees with salaries that are at least 30000 or higher. Which comparison operator should you use?

"=>"

The concatenation operator ...

Brings together columns or character strings into other columns

Creates a resultant column that is a character expression

Is represented by two vertical bars ( || )

All of the above

You need to display employees whose salary is in the range of 30000 and 50000. Which comparison operator should you use?

BETWEEN...AND...

IS NULL

You need to display only unique combinations of the LAST_NAME and MANAGER_ID columns in the EMPLOYEES table. Which keyword should you include in the SELECT clause?

DISTINCTROW

ONLY

UNIQUEONE

DISTINCT

You need to display employees whose salary is in the range of 10000 through 25000 for employees in department 50 . What does the WHERE clause look like?

WHERE department_id < 50 AND salary BETWEEN 10000 AND 25000

WHERE department_id = 50 AND salary BETWEEN 25001 AND 10001

WHERE department_id = 50 AND salary BETWEEN 10000 AND 25000

WHERE department_id > 50 AND salary BETWEEN 10000 AND 25000

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