Question
SELECT nvl (100 / quantity, NONE)
FROM inventory;
Why does this statement cause an error when QUANTITY values are null?
a.
The expression attempts to divide by a null value
b.
The data types in the conversion function are incompatible
c.
The character string none should be enclosed in single quotes (‘ ‘)
d.
A null value used in an expression cannot be converted to an actual value
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Q. 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...
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