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

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

False

True

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

ONLY

SINGLE

UNIQUE

DISTINCT

ONLY

SINGLE

UNIQUE

DISTINCT

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Introduction to SQL
Which one of the following sorts rows in SQL?

SORT BY

ALIGN BY

GROUP BY

ORDER BY

SORT BY

ALIGN BY

GROUP BY

ORDER BY

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Introduction to SQL
Which of the following is the original purpose of SQL?

To specify the syntax and semantics of SQL manipulation language

To specify the syntax and semantics of SQL data definition language

All of these

To define the data structures

To specify the syntax and semantics of SQL manipulation language

To specify the syntax and semantics of SQL data definition language

All of these

To define the data structures

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Introduction to SQL
Find the name of those cities with temperature and condition whose condition is either sunny or cloudy but temperature must be greater than 70oF.

SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' OR condition = 'cloudy' AND temperature > 70;

SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' AND condition = 'cloudy' OR temperature > 70;

SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' AND condition = 'cloudy' AND temperature > 70;

SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' OR condition = 'cloudy' OR temperature > 70;

SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' OR condition = 'cloudy' AND temperature > 70;

SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' AND condition = 'cloudy' OR temperature > 70;

SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' AND condition = 'cloudy' AND temperature > 70;

SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' OR condition = 'cloudy' OR temperature > 70;

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Introduction to SQL
Count function in SQL returns the number of

columns.

groups.

distinct values.

values.

columns.

groups.

distinct values.

values.

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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.

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

Introduction to SQL Which one of the following sorts rows in SQL?

Introduction to SQL Which of the following is the original purpose of SQL?

Introduction to SQL Find the name of those cities with temperature and condition whose condition is either sunny or cloudy but temperature must be greater than 70oF.

Introduction to SQL Count function in SQL returns the number of

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

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

Introduction to SQL
Which one of the following sorts rows in SQL?

Introduction to SQL
Which of the following is the original purpose of SQL?

Introduction to SQL
Find the name of those cities with temperature and condition whose condition is either sunny or cloudy but temperature must be greater than 70oF.

Introduction to SQL
Count function in SQL returns the number of