“SELECT” command: The “SELECT” command is used to retrieve data in a database . Syntax for selecting values from the table is as follows: SELECT STUDENT_ID FROM STUDENT; The given query is used to display each student ID from “STUDENT” table. “COUNT” function: It is the one function of aggregate function. The “COUNT” function is used to compute the number of rows in a table. Example: The example for “COUNT” function is given below: SELECT COUNT() FROM STUDENT WHERE MARK_CREDIT >= 90; The above query is used to display the number of students whose mark credit is greater or equal to “90” by using “COUNT” function. From the given query, the asterisk () represent any column. User can also count the number of rows in a query by selecting a particular column instead of using the asterisk. The below example is as follows, SELECT COUNT(STUDENT_ID) FROM STUDENT WHERE MARK_CREDIT >= 90; “IN” Clause: The “IN” clause consists of an “IN” operator followed by a set of values. Using an “IN” clause, user can determine whether a column contains one of a particular group of values. Example: The example for “IN” clause is given below: SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT WHERE STUDENT_CREDIT IN(50, 70, 100); The above query is used to list student ID, name, and credit for each student with a credit limit of “50”, “70” or “100”. From the given query, user can determine whether a student credit limit is “50”, “70” or “100” using an “IN” operator.

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Answer 1

Question

Chapter 4, Problem 7CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“COUNT” function:

It is the one function of aggregate function.

The “COUNT” function is used to compute the number of rows in a table.

Example:

The example for “COUNT” function is given below:

SELECT COUNT() FROM STUDENT WHERE MARK_CREDIT >= 90;

The above query is used to display the number of students whose mark credit is greater or equal to “90” by using “COUNT” function.

From the given query, the asterisk () represent any column.

User can also count the number of rows in a query by selecting a particular column instead of using the asterisk.

The below example is as follows,
SELECT COUNT(STUDENT_ID) FROM STUDENT WHERE MARK_CREDIT >= 90;

“IN” Clause:

The “IN” clause consists of an “IN” operator followed by a set of values.

Using an “IN” clause, user can determine whether a column contains one of a particular group of values.

Example:

The example for “IN” clause is given below:

SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT WHERE STUDENT_CREDIT IN(50, 70, 100);

The above query is used to list student ID, name, and credit for each student with a credit limit of “50”, “70” or “100”.

From the given query, user can determine whether a student credit limit is “50”, “70” or “100” using an “IN” operator.

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Answer 2

Question

Chapter 4, Problem 7CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“COUNT” function:

It is the one function of aggregate function.

The “COUNT” function is used to compute the number of rows in a table.

Example:

The example for “COUNT” function is given below:

SELECT COUNT() FROM STUDENT WHERE MARK_CREDIT >= 90;

The above query is used to display the number of students whose mark credit is greater or equal to “90” by using “COUNT” function.

From the given query, the asterisk () represent any column.

User can also count the number of rows in a query by selecting a particular column instead of using the asterisk.

The below example is as follows,
SELECT COUNT(STUDENT_ID) FROM STUDENT WHERE MARK_CREDIT >= 90;

“IN” Clause:

The “IN” clause consists of an “IN” operator followed by a set of values.

Using an “IN” clause, user can determine whether a column contains one of a particular group of values.

Example:

The example for “IN” clause is given below:

SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT WHERE STUDENT_CREDIT IN(50, 70, 100);

The above query is used to list student ID, name, and credit for each student with a credit limit of “50”, “70” or “100”.

From the given query, user can determine whether a student credit limit is “50”, “70” or “100” using an “IN” operator.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 4, Problem 7CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“COUNT” function:

It is the one function of aggregate function.

The “COUNT” function is used to compute the number of rows in a table.

Example:

The example for “COUNT” function is given below:

SELECT COUNT() FROM STUDENT WHERE MARK_CREDIT >= 90;

The above query is used to display the number of students whose mark credit is greater or equal to “90” by using “COUNT” function.

From the given query, the asterisk () represent any column.

User can also count the number of rows in a query by selecting a particular column instead of using the asterisk.

The below example is as follows,
SELECT COUNT(STUDENT_ID) FROM STUDENT WHERE MARK_CREDIT >= 90;

“IN” Clause:

The “IN” clause consists of an “IN” operator followed by a set of values.

Using an “IN” clause, user can determine whether a column contains one of a particular group of values.

Example:

The example for “IN” clause is given below:

SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT WHERE STUDENT_CREDIT IN(50, 70, 100);

The above query is used to list student ID, name, and credit for each student with a credit limit of “50”, “70” or “100”.

From the given query, user can determine whether a student credit limit is “50”, “70” or “100” using an “IN” operator.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 4, Problem 7CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“COUNT” function:

It is the one function of aggregate function.

The “COUNT” function is used to compute the number of rows in a table.

Example:

The example for “COUNT” function is given below:

SELECT COUNT() FROM STUDENT WHERE MARK_CREDIT >= 90;

The above query is used to display the number of students whose mark credit is greater or equal to “90” by using “COUNT” function.

From the given query, the asterisk () represent any column.

User can also count the number of rows in a query by selecting a particular column instead of using the asterisk.

The below example is as follows,
SELECT COUNT(STUDENT_ID) FROM STUDENT WHERE MARK_CREDIT >= 90;

“IN” Clause:

The “IN” clause consists of an “IN” operator followed by a set of values.

Using an “IN” clause, user can determine whether a column contains one of a particular group of values.

Example:

The example for “IN” clause is given below:

SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT WHERE STUDENT_CREDIT IN(50, 70, 100);

The above query is used to list student ID, name, and credit for each student with a credit limit of “50”, “70” or “100”.

From the given query, user can determine whether a student credit limit is “50”, “70” or “100” using an “IN” operator.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 4, Problem 7CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“COUNT” function:

It is the one function of aggregate function.

The “COUNT” function is used to compute the number of rows in a table.

Example:

The example for “COUNT” function is given below:

SELECT COUNT() FROM STUDENT WHERE MARK_CREDIT >= 90;

The above query is used to display the number of students whose mark credit is greater or equal to “90” by using “COUNT” function.

From the given query, the asterisk () represent any column.

User can also count the number of rows in a query by selecting a particular column instead of using the asterisk.

The below example is as follows,
SELECT COUNT(STUDENT_ID) FROM STUDENT WHERE MARK_CREDIT >= 90;

“IN” Clause:

The “IN” clause consists of an “IN” operator followed by a set of values.

Using an “IN” clause, user can determine whether a column contains one of a particular group of values.

Example:

The example for “IN” clause is given below:

SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT WHERE STUDENT_CREDIT IN(50, 70, 100);

The above query is used to list student ID, name, and credit for each student with a credit limit of “50”, “70” or “100”.

From the given query, user can determine whether a student credit limit is “50”, “70” or “100” using an “IN” operator.

Answer 6

Chapter 4, Problem 7CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“COUNT” function:

It is the one function of aggregate function.

The “COUNT” function is used to compute the number of rows in a table.

Example:

The example for “COUNT” function is given below:

SELECT COUNT() FROM STUDENT WHERE MARK_CREDIT >= 90;

The above query is used to display the number of students whose mark credit is greater or equal to “90” by using “COUNT” function.

From the given query, the asterisk () represent any column.

User can also count the number of rows in a query by selecting a particular column instead of using the asterisk.

The below example is as follows,
SELECT COUNT(STUDENT_ID) FROM STUDENT WHERE MARK_CREDIT >= 90;

“IN” Clause:

The “IN” clause consists of an “IN” operator followed by a set of values.

Using an “IN” clause, user can determine whether a column contains one of a particular group of values.

Example:

The example for “IN” clause is given below:

SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT WHERE STUDENT_CREDIT IN(50, 70, 100);

The above query is used to list student ID, name, and credit for each student with a credit limit of “50”, “70” or “100”.

From the given query, user can determine whether a student credit limit is “50”, “70” or “100” using an “IN” operator.

Answer 7

Chapter 4, Problem 7CAT

Program Plan Intro

“SELECT” command:

The “SELECT” command is used to retrieve data in a database.

Syntax for selecting values from the table is as follows:

SELECT STUDENT_ID FROM STUDENT;

The given query is used to display each student ID from “STUDENT” table.

“COUNT” function:

It is the one function of aggregate function.

The “COUNT” function is used to compute the number of rows in a table.

Example:

The example for “COUNT” function is given below:

SELECT COUNT() FROM STUDENT WHERE MARK_CREDIT >= 90;

The above query is used to display the number of students whose mark credit is greater or equal to “90” by using “COUNT” function.

From the given query, the asterisk () represent any column.

User can also count the number of rows in a query by selecting a particular column instead of using the asterisk.

The below example is as follows,
SELECT COUNT(STUDENT_ID) FROM STUDENT WHERE MARK_CREDIT >= 90;

“IN” Clause:

The “IN” clause consists of an “IN” operator followed by a set of values.

Using an “IN” clause, user can determine whether a column contains one of a particular group of values.

Example:

The example for “IN” clause is given below:

SELECT STUDENT_ID, STUDENT_NAME, STUDENT_CREDIT FROM STUDENT WHERE STUDENT_CREDIT IN(50, 70, 100);

The above query is used to list student ID, name, and credit for each student with a credit limit of “50”, “70” or “100”.

From the given query, user can determine whether a student credit limit is “50”, “70” or “100” using an “IN” operator.

Answer 8

Expert Solution & Answer

Answer 9

Expert Solution & Answer

Answer 10

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Answer 11

Ch. 4 - Prob. 1RQ Ch. 4 - Prob. 2RQ Ch. 4 - Prob. 3RQ Ch. 4 - Prob. 4RQ Ch. 4 - Prob. 5RQ Ch. 4 - In which clause would you use a wildcard in a...Ch. 4 - Prob. 7RQ Ch. 4 - How do you determine whether a column contains one...Ch. 4 - Prob. 9RQ Ch. 4 - Prob. 10RQ

Solution Summary: The author explains how the "SELECT" command is used to retrieve data in a database.

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Chapter 4 Solutions