Chapter 7, Problem 52P

Program Plan Intro

SELECT statement: It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

SELECT * FROM table_Name;

WHERE clause: “WHERE” statement is used limit the number of rows.

For example: Consider a table “FTable” that has two columns named “FruitName” and “Color”. “WHERE” clause is used when there is a need to display the entire FruitName whose color is Red.

SELECT * FROM FTable WHERE color = 'red';

When the above statement is executed, red colored fruits get displayed.

“COUNT()” function:

In SQL, the “COUNT ()” function will return the total number of rows in the table with satisfying the criteria mentioned in the “WHERE” clause.

GROUP BY Clause:

The GROUPBY clause is used to group the result of a SELECT statement done on a table where the tuple values are similar for more than one column

Syntax:

SELECT expression1, expression2, expression_n, aggregate_function(expression)FROM table_name WHERE conditions GROUP BY expression1, expression2, expression_n;