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Introduction to SQL

Introduction to SQL
DISTINCT and its counterpart, ALL, can be used more than once in a SELECT statement.

True
False

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Introduction to SQL
The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements.

True
False

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Introduction to SQL
Which command undo all the updates performed by the SQL in the transaction?

COMMIT
TRUNCATE
ROLLBACK
DELETE

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Introduction to SQL
The SQL keyword(s) ________ is used with wildcards.

NOT IN only
LIKE only
IN only
IN and NOT IN

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

False
True

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

EXISTS operator
IS NULL operator
None of these
NOT operator

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