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Introduction to SQL

Introduction to SQL
To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included.

SINGLE
DISTINCT
ONLY
UNIQUE

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Introduction to SQL
Which of the following are the five built-in functions provided by SQL?

SUM, AVG, MIN, MAX, NAME
SUM, AVG, MIN, MAX, MULT
COUNT, SUM, AVG, MAX, MIN
SUM, AVG, MULT, DIV, MIN

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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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Introduction to SQL
Count function in SQL returns the number of

groups.
distinct values.
columns.
values.

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Introduction to SQL
Which of the following do you need to consider when you make a table in SQL?

Primary keys
Default values
Data types
All of these

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Introduction to SQL
The SQL statement: SELECT Name, COUNT(*) FROM NAME_TABLE; counts the number of name rows and displays this total in a table with a single row and a single column.

False
True

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