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Oracle Database SQL Sample Questions (Q113-Q118):

NEW QUESTION # 113
Examine the data in the ORD_ITEMS table:

Evaluate this query:

Which statement is true regarding the result?

A. It displays the item nos with their average quantity where the average quantity is more than double the minimum quantity of that item in the table.
B. It returns an error because the HAVING clause should be specified after the GROUP BY clause.
C. It displays the item nos with their average quantity where the average quantity is more than double the overall minimum quantity of all the items in the table.
D. It returns an error because all the aggregate functions used in the HAVING clause must be specified in the SELECT list.

Answer: A

NEW QUESTION # 114
The PRODUCT_INFORMATION table has a UNIT_PRICE column of data type NUMBER(8, 2).
Evaluate this SQL statement:
SELECT TO_CHAR(unit_price,'$9,999') FROM PRODUCT_INFORMATION;
Which two statements are true about the output?

A. A row whose UNIT_PRICE column contains the value 10235.99 will be displayed as $1,023.
B. A row whose UNIT_PRICE column contains the value 1023.99 will be displayed as $1,023.
C. A row whose UNIT_PRICE column contains the value 10235.99 will be displayed as $1,0236.
D. A row whose UNIT_PRICE column contains the value 1023.99 will be displayed as $1,024.
E. A row whose UNIT_PRICE column contains the value 10235.99 will be displayed as #####

Answer: D,E

NEW QUESTION # 115
Which statement executes successfully?

A. SELECT TO_CHAR(INTERVAL '800' SECOND, 'HH24:MM') FROM DUAL;
B. SELECT TO_DATE(TO_NUMBER(INTERVATL '800' SECOND)) FROM DUAL;
C. SELECT TO_DATE(INTERVAL '800' SECOND,'HH24:MM') FROM DUAL;
D. SELECT TO_NUMBER(INTERVAL'800' SECOND, 'HH24:MM') FROM DUAL;
E. SELECT TO_NUWBER(TO_DATE(INTERVAL '800' SECOND)) FROM DUAL;

Answer: A

Explanation:
Oracle's interval data types store a period of time. When you want to format an interval as a string, you can use the TO_CHAR function.
A). This statement will not execute successfully because TO_DATE expects a string representing a date, not a number derived from an interval.
B). This statement will not execute successfully because TO_NUMBER does not support interval data types as an input.
C). This statement will not execute successfully because TO_DATE does not support interval data types as an input.
D). This statement will not execute successfully because TO_NUMBER expects a number or a string representing a number as an argument, not a date.
E). This statement will execute successfully. TO_CHAR function can be used to convert interval values to a formatted string, such as 'HH24:MM'.

NEW QUESTION # 116
Examine the structure of the INVOICE table.

Which two SQL statements would execute successfully? (Choose two.)

A. SELECT inv_no,NVL2(inv_date,sysdate-inv_date,sysdate)FROM invoice;
B. SELECT inv_no,NVL2(inv_amt,inv_date,'Not Available')FROM invoice;
C. SELECT inv_no,NVL2(inv_date,'Pending','Incomplete')FROM invoice;
D. SELECT inv_no,NVL2(inv_amt,inv_amt*.25,'Not Available')FROM invoice;

Answer: A,C

NEW QUESTION # 117
Which two queries return the string Hello! we're ready?

A. SELECT "Hello! We're ready "FROM |DUAL;
B. SELECT q'! Hello! We're ready! 'FROM DUAL;
C. SELECT 'Hello! We're ready' FROM DUAL;
D. SELECT q'[Hello! We're ready]'FROM DUAL;
E. SELECT 'Hello! we re ready' ESCAPE'N'FROMDUAL:

Answer: B,D

Explanation:
In Oracle SQL, the q quote operator can be used to define string literals that contain single quotes or other special characters without needing to escape them. The queries using the q quote mechanism, like in options A and C, will successfully return the string as it is, including single quotes within the string.
* A: Correct, it uses the q quote operator with the exclamation mark ! as the delimiter, which allows the string to contain single quotes.
* B: Incorrect, double quotes " in Oracle SQL are used for identifiers such as column names, not string literals.
* C: Correct, this also uses the q quote operator, with the square brackets [] as the delimiters.
* D: Incorrect, the backslash is not used as an escape character in Oracle SQL string literals, and the ESCAPE keyword is used incorrectly here.
* E: Incorrect, this does not account for the single quote within the string, which would terminate the string literal prematurely, and it lacks the q quote operator or proper escape mechanism.

NEW QUESTION # 118
......

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Lucas Hughes Lucas Hughes

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