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Introduction to SQL

Introduction to SQL
SQL provides five built-in functions: COUNT, SUM, AVG, MAX, MIN.

True
False

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Introduction to SQL
The SQL statement that queries or reads data from a table is ________ .

QUERY
SELECT
None of these
READ

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

FLASE
TRUE
Nothing
Hi

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

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

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

MAX
SUM
All of these
COUNT

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Introduction to SQL
The HAVING clause acts like a WHERE clause, but it identifies groups that meet a criterion, rather than rows.

True
False

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