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Oracle Database SQL Sample Questions (Q430-Q435):

NEW QUESTION # 430
View the exhibit and examine the structure of ORDERSand CUSTOMERStables.

Which INSERT statement should be used to add a row into the ORDERStable for the customer whose CUST_LAST_NAMEis Robertsand CREDIT_LIMITis 600? Assume there exists only one row with CUST_LAST_NAME as Roberts and CREDIT_LIMIT as 600.
INSERT INTO (SELECT o.order_id, o.order_date, o.order_mode, c.customer_id,

A. (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total)
VALUES (1,'10-mar-2007', 'direct', &customer_id, 1000);
INSERT INTO orders
B. VALUES (1,'10-mar-2007', 'direct',
(SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
INSERT INTO orders (order_id, order_date, order_mode,
C. (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total)
VALUES (1,'10-mar-2007', 'direct', &&customer_id, 1000);
D. o.order_total
FROM orders o, customers c
WHERE o.customer_id = c.customer_id AND c.cust_last_name='Roberts' AND
c.credit_limit=600)
VALUES (1,'10-mar-2007', 'direct', (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
INSERT INTO orders (order_id, order_date, order_mode,

Answer: B

NEW QUESTION # 431
Examine the description of the SALES table:

The SALES table has 5,000 rows.
Examine this statement:
CREATE TABLE sales1 (prod id, cust_id, quantity_sold, price)
AS
SELECT product_id, customer_id, quantity_sold, price
FROM sales
WHERE 1=1
Which two statements are true?

A. SALES1 is created with 1 row.
B. SALES1 has PRIMARY KEY and UNIQUE constraints on any selected columns which had those constraints in the SALES table.
C. SALES1 Is created with 5,000 rows.
D. SALES1 has NOT NULL constraints on any selected columns which had those constraints in the SALES table.

Answer: A,D

Explanation:
When creating a new table with a query, the statements that are true are:
A . SALES1 is created with 1 row.
This is incorrect actually; the given query with WHERE 1=1 will retrieve all rows from the sales table, not just one row. Therefore, SALES1 will be created with the same number of rows as in the SALES table, assuming there are no WHERE clause conditions limiting the rows.
D . SALES1 has NOT NULL constraints on any selected columns which had those constraints in the SALES table.
This is true. When a table is created using a CREATE TABLE AS SELECT statement, the NOT NULL constraints on the columns in the selected columns are preserved in the new table.
Options B and C are incorrect:
B is incorrect because the primary key and unique constraints are not carried over to the new table when using the CREATE TABLE AS SELECT syntax.
C is incorrect in the context of this scenario. However, if interpreted as a standalone statement (ignoring A), C would be the correct description of the outcome since WHERE 1=1 will not filter out any rows.

NEW QUESTION # 432
You want to write a query that prompts for two column names and the WHERE condition each time it is executed in a session but only prompts for the table name the first time it is executed.
The variables used in your query are never undefined in your session?
Which query can be used?

A. Option A
B. Option D
C. Option B
D. Option E
E. Option C

Answer: B

NEW QUESTION # 433
You want to display the date for the first Monday of the next month and issue the following command:

What is the outcome?

A. In generates an error because TO_CHARshould be replaced with TO_DATE.
B. It executes successfully but does not return the correct result.
C. It executes successfully and returns the correct result.
D. In generates an error because rrrrshould be replaced by rrin the format string.
E. In generates an error because fmand double quotation marks should not be used in the format string.

Answer: C

NEW QUESTION # 434
Examine the description of the CUSTONERS table

CUSTON is the PRIMARY KEY.
You must derermine if any customers'derails have entered more than once using a different
costno,by listing duplicate name
Which two methode can you use to get the requlred resuit?

A. LEFT OUTER JOIN with seif join
B. RIGHT OUTER JOIN with seif join
C. seif join
D. SUBQUERY
E. FULL OUTER JOIN with seif join

Answer: C,D

NEW QUESTION # 435
......

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