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Questions and Answers
Which keyword allows us to remove duplicates from query results?
Which keyword allows us to remove duplicates from query results?
- REMOVE
- DISTINCT (correct)
- DUPLICATE
- UNIQUE
What is the maximum number of columns that can be sorted using the ORDER BY clause?
What is the maximum number of columns that can be sorted using the ORDER BY clause?
- 128
- 1024
- 512
- 255 (correct)
What is the default sorting order when using the ORDER BY clause?
What is the default sorting order when using the ORDER BY clause?
- Alphabetical
- Ascending (correct)
- Descending
- Random
What is the concatenation operator in SQL?
What is the concatenation operator in SQL?
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What is a column alias used for in SQL?
What is a column alias used for in SQL?
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Which mathematical operations are solved first in SQL?
Which mathematical operations are solved first in SQL?
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What is the purpose of a primary and multiple secondary sorts in SQL?
What is the purpose of a primary and multiple secondary sorts in SQL?
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