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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.

ONLY
UNIQUE
SINGLE
DISTINCT

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Introduction to SQL
When three or more AND and OR conditions are combined, it is easier to use the SQL keyword(s):

Both IN and NOT IN.
LIKE only.
NOT IN only.
IN only.

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

COUNT
All of these
MAX
SUM

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Introduction to SQL
The SQL -92 wildcards are ____ and ____ .

asterisk (*); percent sign (%)
underscore(_); question mark (?)
question mark (?); asterisk (*)
percent sign (%); underscore (_)

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

IN only
LIKE only
IN and NOT IN
NOT IN only

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Introduction to SQL
The rows of the result relation produced by a SELECT statement can be sorted, but only by one column.

True
False

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