You Attempt To Query The Database With This Command P Pre #280
You attempt to query the database with this command: </p> <pre><code class="language-sql"> select nvl (100 / quantity, none) from inventory;</code></pre> <p>Why does this statement cause an error when QUANTITY values are null?
This multiple choice question (MCQ) is related to the book/course
gs gs117 Database Management System.
It can also be found in
gs gs117 SQL: Queries, Constraints and Triggers - Null Values Operations - Quiz No.1.
You attempt to query the database with this command:
select nvl (100 / quantity, none) from inventory;Why does this statement cause an error when QUANTITY values are null?
The expression attempts to divide by a null value
The data types in the conversion function are incompatible
The character string none should be enclosed in single quotes (‘ ‘)
A null value used in an expression cannot be converted to an actual value
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