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Introduction to SQL

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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Introduction to SQL
A subquery in an SQL SELECT statement:

cannot have its results sorted using ORDER BY.
can only be used with two tables.
has a distinct form that cannot be duplicated by a join.
can always be duplicated by a join.

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Introduction to SQL
The ADD command is used to enter one row of data or to add multiple rows as a result of a query.

True
False

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Introduction to SQL
The SQL keyword BETWEEN is used:

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

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Introduction to SQL
What is the full form of SQL?

Simple Query Language
Structured Query List
Structured Query Language
None of these

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

LIKE only
NOT IN only
IN only
IN and NOT IN

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