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Introduction to SQL

Introduction to SQL
Which of the following group functions ignore NULL values?

MAX
COUNT
SUM
All of these

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

ORDER BY
SORT BY
GROUP BY
ALIGN BY

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Introduction to SQL
The FROM SQL clause is used to...

specify range for search condition
specify what table we are selecting or deleting data FROM
specify search condition
None of these

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Introduction to SQL
When three or more AND and OR conditions are combined, it is easier to use the SQL keyword(s):

IN only.
LIKE only.
Both IN and NOT IN.
NOT IN only.

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Introduction to SQL
Indexes may be created or dropped at any time.

False
True

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Introduction to SQL
Data manipulation language (DML) commands are used to define a database, including creating, altering, and dropping tables and establishing constraints.

True
False

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