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Exam 70-761 topic 1 question 118 discussion

Actual exam question from Microsoft's 70-761
Question #: 118
Topic #: 1
[All 70-761 Questions]

You have a database named DB1 that contains a temporal table named Sales.Customers.
You need to create a query that returns the credit limit that was available to each customer in DB1 at the beginning of 2017.
Which query should you execute?

A.

B.

C.

D.

Show Suggested Answer Hide Answer
Suggested Answer: C
AS OF: Returns a table with a rows containing the values that were actual (current) at the specified point in time in the past.
Incorrect Answers:
A, B: CONTAINED IN has two parameters: CONTAINED IN (<start_date_time> , <end_date_time>)
References:
https://docs.microsoft.com/en-us/sql/relational-databases/tables/querying-data-in-a-system-versioned-temporal-table
by Andybug at Feb. 2, 2020, 12:47 p.m.

Comments

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Andybug
Highly Voted 5 years, 3 months ago
sorry C is correct i didn't look at it properly
upvoted 7 times
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Vermonster
Most Recent 4 years, 4 months ago
AS OF works. CONTAINED IN also operates only against the history table so if transaction is still the most current, you won't get it (BETWEEN would be better if we had a range).
upvoted 1 times
Vermonster
4 years, 4 months ago
Implicit conversion happens on 2017-01-01 to turn that into datetime
upvoted 1 times
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SimSql
4 years, 4 months ago
I think C is correct.
upvoted 1 times
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BabyBee
4 years, 5 months ago
None of them work. CONTAINED needs two parameters; AS OF needs exact datetime value not just date part, it won't run. Tested. And ALL is not what we are looking for.
upvoted 1 times
kimalto452
4 years, 4 months ago
answer is correct
upvoted 1 times
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Andybug
5 years, 3 months ago
there as to be a specified year c is wrong
upvoted 1 times
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