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Oracle 1Z0-071 Exam - Topic 9 Question 112 Discussion

Examine the description of the ORDER_ITEMS table:Examine this incomplete query:SELECT DISTINCT quantity * unit_price total_paid FROM order_items ORDER BY ;Which two can replace so the query completes successfully?
B) quantity, unit_price and C) total_paid
A) quantity
D) product_id
E) quantity * unit_price

Oracle 1Z0-071 Exam - Topic 9 Question 112 Discussion

Actual exam question for Oracle's 1Z0-071 exam
Question #: 112
Topic #: 9
[All 1Z0-071 Questions]

Examine the description of the ORDER_ITEMS table:

Examine this incomplete query:

SELECT DISTINCT quantity * unit_price total_paid FROM order_items ORDER BY ;

Which two can replace so the query completes successfully?

Show Suggested Answer Hide Answer
Suggested Answer: B, C

In Oracle SQL, when you subtract a number from a date, the result is a date. When you subtract one date from another, the result is the number of days between the two dates.

B: PROMO_BEGIN_DATE - 5 will subtract 5 days from the PROMO_BEGIN_DATE, resulting in a new date that is 5 days earlier than PROMO_BEGIN_DATE.

C: PROMO_BEGIN_DATE - SYSDATE will return the number of days between the PROMO_BEGIN_DATE and the current date (SYSDATE).

The incorrect options are:

A: TONUMBER(PROMO_BEGIN_DATE) - 5 will not return a number because PROMO_BEGIN_DATE is a date, and TONUMBER is not a valid function to convert dates to numbers in Oracle.

D: PROMO_BEGIN_DATE - SYSDATE will not return an error; it will return the number of days between the two dates as explained above.

E: TODATE(PROMO_BEGIN_DATE * 5) will not return a date because PROMO_BEGIN_DATE * 5 is not a valid operation in Oracle SQL as you cannot multiply a date by a number, and TODATE is not a valid function. The correct function name is TO_DATE.


Oracle Documentation on Date Arithmetic: Database SQL Language Reference - Datetime Functions

by Gaston at Feb 10, 2025, 01:48 PM

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Santos
9 months ago
Yeah, I thought it had to be a column name, not an expression.
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Leonora
9 months ago
I think quantity * unit_price is a no-go for ORDER BY.
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Tammy
9 months ago
Wait, can you really use total_paid in the ORDER BY?
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Gretchen
10 months ago
Totally agree, product_id makes sense here!
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Brandon
10 months ago
You can use quantity or product_id to complete the query.
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Alline
10 months ago
I definitely remember that we can order by columns directly from the SELECT statement, so I think quantity and product_id could work here.
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Boris
10 months ago
I’m a bit confused about whether we can use expressions like quantity * unit_price in the ORDER BY. I feel like we might have done that before, but I can't recall clearly.
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Kanisha
10 months ago
I think we practiced a similar question where we had to order by a calculated field. I feel like quantity and unit_price might be valid options here.
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Eun
11 months ago
I remember we talked about using aliases in queries, but I'm not sure if total_paid can be used directly in the ORDER BY clause.
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Ayesha
11 months ago
Alright, let me think this through. The query is selecting the distinct total paid values, so the clause should be either quantity * unit_price or the calculated total_paid column. I'll need to carefully consider the options to determine the best answer.
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Lino
11 months ago
This is straightforward. The query is calculating the total paid for each order, and the clause should be the calculated total_paid column. I'm confident that's the right answer.
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Teddy
11 months ago
I'm a bit confused here. The question says the query is incomplete, but it looks like a complete SELECT statement to me. I'll need to double-check the table structure and the expected output to make sure I understand what the query is trying to achieve.
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Maile
11 months ago
Okay, I think I've got this. The query is asking for the total paid, which is calculated as quantity * unit_price. So the clause should be either quantity, unit_price, or the calculated total_paid.
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Tracey
11 months ago
Hmm, this looks like a tricky one. I'll need to carefully examine the table structure and the query to figure out the right clause to use.
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Theron
1 year ago
I'm just wondering if the 'ORDER_ITEMS' table is where they keep all the order items that are out of order.
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Roselle
1 year ago
B) quantity, unit_price
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Kristin
1 year ago
A) quantity
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Tammara
1 year ago
A) quantity? Really? That's like ordering a meal by the number of forks you used. E) is the only logical choice here.
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Dorothea
1 year ago
Hmm, I was leaning towards C) total_paid, but I guess that would be circular reasoning. E) is the way to go!
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Norah
1 year ago
Hmm, I was leaning towards C) total_paid, but I guess that would be circular reasoning. E) is the way to go!
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Matthew
1 year ago
I agree, E) quantity * unit_price makes the most sense.
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Kiley
1 year ago
I think E) quantity * unit_price is the correct choice.
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Dustin
1 year ago
B) quantity, unit_price looks good to me. Ordering by the individual columns that make up the total_paid calculation should also work.
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Martina
1 year ago
Let's go with B) quantity, unit_price then.
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Clarinda
1 year ago
Agreed, ordering by the individual columns that make up the total_paid calculation should work.
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Michell
1 year ago
I think B) quantity, unit_price is the correct choice.
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Major
1 year ago
I think the correct answer is E) quantity * unit_price. It makes sense to order the results by the computed total_paid column.
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Arlyne
1 year ago
Yes, that would give us the total amount paid for each order item.
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Teddy
1 year ago
I agree, ordering by the computed total_paid column would make sense.
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Emiko
1 year ago
I think the correct answer is E) quantity * unit_price.
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Gene
1 year ago
But the query is looking for a column to order by, so it should be B) quantity, unit_price.
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Sarah
1 year ago
I disagree, I believe the answer is E) quantity * unit_price.
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Gene
1 year ago
I think the answer is B) quantity, unit_price.
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