Grouping Rows: SQL contains “GROUP BY” clause in order to group rows by common data. Though it is very powerful feature, it is hard to understand. Syntax: SELECT column_Name1 FROM table_Name GROUP BY column_Name2; Example: Consider a table “student” contains two columns “student_Name” and “Department”. “GROUP BY” clause is used when there is a need to get the number of students from each department. The query for this scenario is given as follows. SELECT department, COUNT (department) FROM student GROUP BY department; When the above query is executed, number of students from each department will be displayed.

Question

I need help to solve the following case, thank you

Answer 1

Question

Chapter 7, Problem 23P

Program Plan Intro

Grouping Rows:

SQL contains “GROUP BY” clause in order to group rows by common data. Though it is very powerful feature, it is hard to understand.

Syntax:

SELECT column_Name1 FROM table_Name GROUP BY column_Name2;

Example: Consider a table “student” contains two columns “student_Name” and “Department”. “GROUP BY” clause is used when there is a need to get the number of students from each department. The query for this scenario is given as follows.

SELECT department, COUNT (department) FROM student GROUP BY department;

When the above query is executed, number of students from each department will be displayed.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Students have asked these similar questions

I need help to solve the following case, thank you

hi I would like to get help to resolve the following case

Could you help me to know features of the following concepts: - defragmenting. - dynamic disk. - hardware RAID

Answer 2

Question

Chapter 7, Problem 23P

Program Plan Intro

Grouping Rows:

SQL contains “GROUP BY” clause in order to group rows by common data. Though it is very powerful feature, it is hard to understand.

Syntax:

SELECT column_Name1 FROM table_Name GROUP BY column_Name2;

Example: Consider a table “student” contains two columns “student_Name” and “Department”. “GROUP BY” clause is used when there is a need to get the number of students from each department. The query for this scenario is given as follows.

SELECT department, COUNT (department) FROM student GROUP BY department;

When the above query is executed, number of students from each department will be displayed.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 3

Question

Chapter 7, Problem 23P

Program Plan Intro

Grouping Rows:

SQL contains “GROUP BY” clause in order to group rows by common data. Though it is very powerful feature, it is hard to understand.

Syntax:

SELECT column_Name1 FROM table_Name GROUP BY column_Name2;

Example: Consider a table “student” contains two columns “student_Name” and “Department”. “GROUP BY” clause is used when there is a need to get the number of students from each department. The query for this scenario is given as follows.

SELECT department, COUNT (department) FROM student GROUP BY department;

When the above query is executed, number of students from each department will be displayed.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 4

Question

Chapter 7, Problem 23P

Program Plan Intro

Grouping Rows:

SQL contains “GROUP BY” clause in order to group rows by common data. Though it is very powerful feature, it is hard to understand.

Syntax:

SELECT column_Name1 FROM table_Name GROUP BY column_Name2;

Example: Consider a table “student” contains two columns “student_Name” and “Department”. “GROUP BY” clause is used when there is a need to get the number of students from each department. The query for this scenario is given as follows.

SELECT department, COUNT (department) FROM student GROUP BY department;

When the above query is executed, number of students from each department will be displayed.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 5

Chapter 7, Problem 23P

Program Plan Intro

Grouping Rows:

SQL contains “GROUP BY” clause in order to group rows by common data. Though it is very powerful feature, it is hard to understand.

Syntax:

SELECT column_Name1 FROM table_Name GROUP BY column_Name2;

Example: Consider a table “student” contains two columns “student_Name” and “Department”. “GROUP BY” clause is used when there is a need to get the number of students from each department. The query for this scenario is given as follows.

SELECT department, COUNT (department) FROM student GROUP BY department;

When the above query is executed, number of students from each department will be displayed.

Answer 6

Chapter 7, Problem 23P

Program Plan Intro

Grouping Rows:

SQL contains “GROUP BY” clause in order to group rows by common data. Though it is very powerful feature, it is hard to understand.

Syntax:

SELECT column_Name1 FROM table_Name GROUP BY column_Name2;

Example: Consider a table “student” contains two columns “student_Name” and “Department”. “GROUP BY” clause is used when there is a need to get the number of students from each department. The query for this scenario is given as follows.

SELECT department, COUNT (department) FROM student GROUP BY department;

When the above query is executed, number of students from each department will be displayed.

Answer 7

Chapter 7, Problem 23P

Program Plan Intro

Grouping Rows:

SQL contains “GROUP BY” clause in order to group rows by common data. Though it is very powerful feature, it is hard to understand.

Syntax:

SELECT column_Name1 FROM table_Name GROUP BY column_Name2;

Example: Consider a table “student” contains two columns “student_Name” and “Department”. “GROUP BY” clause is used when there is a need to get the number of students from each department. The query for this scenario is given as follows.

SELECT department, COUNT (department) FROM student GROUP BY department;

When the above query is executed, number of students from each department will be displayed.

Answer 8

Expert Solution & Answer

Answer 9

Expert Solution & Answer

Answer 10

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 11

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 12

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 13

Trending nowThis is a popular solution!

Answer 14

Trending nowThis is a popular solution!

Answer 15

Trending nowThis is a popular solution!

Answer 16

Trending now

Answer 17

This is a popular solution!

Answer 18

See solution

Check out sample textbook solution

Answer 19

Ch. 7 - Prob. 1RQ Ch. 7 - Explain why the following command would create an...Ch. 7 - Prob. 3RQ Ch. 7 - Explain why it might be more appropriate to...Ch. 7 - What is the difference between a column constraint...Ch. 7 - What are referential constraint actions?Ch. 7 - Rewrite the following WHERE clause without the use...Ch. 7 - Explain the difference between an ORDER BY clause...Ch. 7 - Explain why the following two commands produce...Ch. 7 - What is the difference between the COUNT aggregate...

Solution Summary: The author explains that SQL contains the "GROUP BY" clause in order to group rows by common data.

Concept explainers

Chapter 7 Solutions