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Introduction to SQL

Introduction to SQL
The SQL keyword GROUP BY instructs the DBMS to group together those rows that have the same value in a column.

True
False

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Introduction to SQL
The benefits of a standard relational language include which of the following?

Reduced training costs
Increased dependence on a single vendor
Applications are not needed
All of these

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Introduction to SQL
Which of the following SQL commands is used to retrieve data?

DELETE
INSERT
JOIN
SELECT

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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
The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs

Hi
FLASE
TRUE
Nothing

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Introduction to SQL
In SQL, which command(s) is(are) used to change a table's storage characteristics?

ALTER TABLE
CHANGE TABLE
MODIFY TABLE
All of these

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