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Oracle Database SQL Sample Questions (Q164-Q169):

NEW QUESTION # 164
View the exhibit and examine the description of SALES and PROMOTIONS tables. You want to delete rows from the SALES table, where the PROMO_NAME column in the PROMOTIONS table has either blowout sale or everyday low price as values.

Which three DELETE statements are valid? (Choose three.)

A. DELETE
FROM sales
WHERE promo_id = (SELECT promo_id
FROM promotions
WHERE promo_name = `blowout sale')
OR promo_id = (SELECT promo_id
FROM promotions
WHERE promo_name = `everyday low price')
B. DELETE
FROM sales
WHERE promo_id = (SELECT promo_id
FROM promo_name = `blowout sale')
AND promo_id = (SELECT promo_id
FROM promotions
WHERE promo_name = `everyday low price')
FROM promotions
WHERE promo_name = `everyday low price');
C. DELETE
FROM sales
WHERE promo_id = (SELECT promo_id
FROM promotions
WHERE promo_name = `blowout sale')
OR promo_name = `everyday low price');
D. DELETE
FROM sales
WHERE promo_id IN (SELECT promo_id
FROM promotions
WHERE promo_name IN = `blowout sale',`everyday low price'));

Answer: A,C,D

NEW QUESTION # 165
View the Exhibit and examine the structure of the PRODUCT_INFORMATION table. (Choose the best answer.)

PRODUCT_ID column is the primary key.
You create an index using this command:
SQL > CREATE INDEX upper_name_idx
ON product_information(UPPER(product_name));
No other indexes exist on the PRODUCT_INFORMATION table.
Which query would use the UPPER_NAME_IDX index?

A. SELECT product_id, UPPER(product_name)
FROM product_information
WHERE UPPER(product_name) = 'LASERPRO' OR list_price > 1000;
B. SELECT UPPER(product_name)
FROM product_information
WHERE product_id = 2254;
C. SELECT UPPER(product_name)
FROM product_information;
D. SELECT product_id
FROM product_information
WHERE UPPER(product_name) IN ('LASERPRO', 'CABLE');

Answer: D

NEW QUESTION # 166
The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE.
NLS_DATE_FORMAT is set to DD-MON-RR.
Which two are true about data type conversions involving these columns in query expressions? (Choose two.)

A. CONCAT(qty_sold, invoice_date) : requires explicit conversion
B. invoice_date = '15-march-2019' : uses implicit conversion
C. qty_sold BETWEEN '101' AND '110' : uses implicit conversion
D. invoice_date > '01-02-2019' : uses implicit conversion
E. qty_sold = '0554982' : requires explicit conversion

Answer: B,C

NEW QUESTION # 167
Evaluate the following query:
SQL> SELECT TRUNC (ROUND (156.00, -1),-1)
FROM DUAL;
What would be the outcome?

A. 0
B. 1
C. 2
D. 3
E. 4

Answer: B

NEW QUESTION # 168
Examine this statement,which executes successfully:
In which order are the rows displayed?

A. Sorted by MAXSAL
B. sorted by AVGSAL
C. sorted by DEPARTMENT_NAME and MAXSAL
D. sorted by DEPARTMENT_NAME
E. sorted by DEPARTMENT_NAME and AVGSAL

Answer: E

Explanation:
Since the statement seems to imply that a sort operation involving department names and an average salary (AVGSAL) was executed, the best logical inference, given typical SQL query behavior and assuming a typical structure, is:
* B. sorted by DEPARTMENT_NAME and AVGSAL: Generally, when SQL queries involve grouping and aggregation, the ORDER BY clause (if explicitly mentioned or implied in your statement details) would sort by the grouping column first (DEPARTMENT_NAME) and then by any aggregated column such as average salary (AVGSAL). This order ensures that within each department, the rows are sorted according to the average salary.

NEW QUESTION # 169
......

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