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Introduction to SQL

Introduction to SQL
To sort the results of a query use:

None of these
ORDER BY.
GROUP BY.
SORT BY.

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Introduction to SQL
Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value.

False
True

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Introduction to SQL
The keyword BETWEEN can be used in a WHERE clause to refer to a range of values.

False
True

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Introduction to SQL
Which one of the following sorts rows in SQL?

ALIGN BY
ORDER BY
SORT BY
GROUP BY

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Introduction to SQL
Count function in SQL returns the number of

values.
distinct values.
groups.
columns.

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Introduction to SQL
Which of the following command makes the updates performed by the transaction permanent in the database?

TRUNCATE
DELETE
ROLLBACK
COMMIT

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