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Introduction to SQL

Introduction to SQL
What operator tests column for the absence of data?

IS NULL operator
EXISTS operator
NOT operator
None of these

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Introduction to SQL
ORDER BY can be combined with the SELECT statements.

True
False

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Introduction to SQL
Which of the following is a SQL aggregate function?

JOIN
AVG
LEN
LEFT

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Introduction to SQL
The SQL keyword BETWEEN is used:

to limit the columns displayed.
None of these
as a wildcard.
for ranges.

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Introduction to SQL
Which of the following is valid SQL for an Index?

CHANGE INDEX ID;
REMOVE INDEX ID;
CREATE INDEX ID;
ADD INDEX ID;

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Introduction to SQL
SQL is a programming language.

True
False

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