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Question 69/290
The PRODUCTS table has the following structure:
Evaluate the following two SQL statements:
Which statement is true regarding the outcome?
Evaluate the following two SQL statements:
Which statement is true regarding the outcome?
Correct Answer: B
Explanation/Reference:
Explanation:
Using the NVL2 Function
The NVL2 function examines the first expression. If the first expression is not null, the NVL2 function returns the second expression. If the first expression is null, the third expression is returned.
Syntax
NVL2(expr1, expr2, expr3)
In the syntax:
expr1 is the source value or expression that may contain a null
expr2 is the value that is returned if expr1 is not null
expr3 is the value that is returned if expr1 is null
Explanation:
Using the NVL2 Function
The NVL2 function examines the first expression. If the first expression is not null, the NVL2 function returns the second expression. If the first expression is null, the third expression is returned.
Syntax
NVL2(expr1, expr2, expr3)
In the syntax:
expr1 is the source value or expression that may contain a null
expr2 is the value that is returned if expr1 is not null
expr3 is the value that is returned if expr1 is null
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