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The output generated by the boolean expression not unknown is
- Unknown
- True
- False
- Null
Aggregate functions are said to take a set or multiset of values as input and return
- Single value
- Multiple sets
- Multiple attributes
- Multiple values
An aggregate function of SQL that demands the input to be a collection of numbers is known to be
- Avg
- Sum
- Both A and B
- Min/Max
The clause when is used in a query, demands elimination of duplicate tuples, is called
- Select Clause
- Where Distinct Clause
- Select distinct Clause
- From Distinct Clause
Built-in aggregate functions introduced by SQL can be classified into
- 2 types
- 3 types
- 4 types
- 5 types
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