SQL Interview Preparation/

...

/

Answer: The GROUP BY Clause and the SUM Function

Answer: The GROUP BY Clause and the SUM Function

Find a detailed explanation of using the GROUP BY clause to group the records using SQL query.

We'll cover the following...

Solution

The solution is given below:

MySQL
/* The query to find the total price of products for each category */
SELECT   Category, SUM(Price) AS TotalPrice
FROM     Products
GROUP BY Category;

Explanation

The explanation of the solution code is given below:

  • Line 2: The SELECT query selects the Category column and the total price of the Price column by calculating it using the SUM function. We use AS to set an alias for the column.

  • Line 3: The FROM clause specifies the table, Products.

  • Line 4: The GROUP BY clause specifies the Category column on which we want to group our data. ...