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Introduction to SQL

Introduction to SQL
COUNT(field_name) tallies only those rows that contain a value; it ignores all null values.

True
False

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Introduction to SQL
Which SQL keyword is used to retrieve only unique values?

UNIQUE
DISTINCT
DISTINCTIVE
DIFFERENT

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

READ
QUERY
SELECT
None of these

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Introduction to SQL
A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.

True
False

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Introduction to SQL
What is the meaning of LIKE '%0%0%'

Feature has more than two 0's
Feature begins with two 0's
Feature ends with two 0's
Feature has two 0's in it, at any position

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Introduction to SQL
SQL query and modification commands make up a(n) ________ .

HTML
XML
DDL
DML

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