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Oracle Database SQL Sample Questions (Q151-Q156):

NEW QUESTION # 151
Examine the data in the CUST_NAME column of the CUSTOMERS table.
CUST_NAME
----------------
Lex De Haan
Renske Ladwig
Jose Manuel Urman
Jason Mallin
You want to extract only those customer names that have three names and display the * symbol in place of the first name as follows:
CUST NAME
------------------
*** De Haan
**** Manuel Urman
Which two queries give the required output? (Choose two.)

A. SELECT LPAD(SUBSTR(cust_name,INSTR(cust_name,' ')),LENGTH(cust_name),'*') "CUST NAME" FROM customers WHERE INSTR(cust_name, ' ',1,2)<>0;
B. SELECT LPAD(SUBSTR(cust_name,INSTR(cust_name,' ')),LENGTH(cust_name),'*') "CUST NAME" FROM customers WHERE INSTR(cust_name, ' ',-1,2)<>0;
C. SELECT LPAD(SUBSTR(cust_name,INSTR(cust_name,' ')),LENGTH(cust_name)- cust_name,''),'*')
"CUST NAME"
INSTR(
FROM customers
WHERE INSTR(cust_name, ' ',-1,-2)<>0;
D. SELECT LPAD(SUBSTR(cust_name,INSTR(cust_name,' ')),LENGTH(cust_name)- INSTR(cust_name,' '),'*') "CUST NAME" FROM customers WHERE INSTR(cust_name, ' ',1,2)<>0 ;

Answer: A,B

NEW QUESTION # 152
Examine this SQL statement:
SELECT cust_id, cust_last_name "Last Name
FROM customers
WHERE countryid=10
UNION
SELECT custid CUSTNO, cust_last_name
FROM customers
WHERE countryid=30
Identify three ORDER BY clauses, any one of which can complete the query successfully.

A. ORDER BY "Last Name"
B. ORDERBY2, 1
C. ORDER BY 2, cust_id
D. ORDER BY"CUST NO"
E. ORDER BY CUSTNO

Answer: A,B,C

Explanation:

NEW QUESTION # 153
View the Exhibit and examine the description for the PRODUCTS and SALES table.

PROD_ID is a primary key in the PRODUCTS table and foreign key in the SALES table.
You want to remove all the rows from the PRODUCTS table for which no sale was done for the last three years.
Which is the valid DELETE statement?

A. DELETE FROM products
WHERE prod_id IN (SELECT prod_id FROM sales
WHERE time_id >= SYSDATE - 3*365 );
B. DELETE FROM products
WHERE prod_id = (SELECT prod_id FROM sales
WHERE time_id - 3*365 = SYSDATE );
C. DELETE FROM products
WHERE prod_id IN (SELECT prod_id FROM sales
WHERE SYSDATE - 3*365 >= time_id);
D. DELETE FROM products
WHERE prod_id = (SELECT prod_id FROM sales
WHERE SYSDATE >= time_id - 3*365 );

Answer: C

NEW QUESTION # 154
Examine this description of the PRODUCTS table:

You successfully execute this command:

Which two statements execute without errors? (Choose two.)

Answer: C

NEW QUESTION # 155
A session's NLS_DATE_FORMAT is set to DD Mon YYYY .
Which two queries return the value 1 Jan 2019?

A. SELECT DATE '2019-01-01' FROM DUAL ;
B. SELECT TO_CHAR('2019-01-01') FROM DUAL; 2019-01-01
C. SELECT to_date(' 2019-01-01 ', 'YYYY -MM-DD' ) FROM DUAL;
D. SELECT TO_ DATE('2019-01-01') FROM DUAL;
E. SELECT '2019-01-01' FROM DUAL ; 2019-01-01

Answer: A,C

NEW QUESTION # 156
......

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