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Question 11 (1 point) 11. Which of the following is a request that can be answered using an OUTER JOIN? a. Show me customers

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Answer #1

Question 11:
Which of the following is a request that can be answered using an OUTER JOIN?
Ans: What products have never been ordered? have never been ordered?

When we check all the other options, there is no necessity of using an outer join for the following requests, except the request What products have never been ordered? since it needs to combine 2 different tables.

Question 12:
what keyword is used to provide a name for expression in a select clause?
Ans: AS

We can use AS keyword to provide a name for expression in a select clause for a particular column derivation.

Question 13:
which keyword represents missing or unknown values in SQL
Ans: NULL

In SQL, We use the NULL keyword to denotes a missing or unknown value.

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