QUARTER() Function in MySQL

QUARTER() function in MySQL is used to return the quarter of the year for a given date value. It returns a number from 1 to 4. 

Syntax :

QUARTER(date)

Parameter : The function accepts only one parameter 

• date : The date or DateTime from which we want to extract the quarter.

Returns : It returns 1 if the given date is in range January-March. 2 for April-June.3 for July-September and if the date is in the range from October-December it returns 4.

Example-1 :

Finding the Current QUARTER Using QUARTER() Function.

SELECT QUARTER(NOW()) AS CURRENT_QUARTER;

Output :

CURRENT_QUARTER
4

Example-2 : 

Finding the Quarter from given DateTime Using QUARTER() Function.

SELECT QUARTER('2020-04-26 08:09:22') AS QUARTER_NUMBER;

Output :

QUARTER_NUMBER
2

Example-3 : 

Finding the Quarter from given DateTime Using QUARTER() Function when the date is NULL.

SELECT QUARTER(NULL) AS QUARTER_NUMBER;

Output :

QUARTER_NUMBER
NULL

Example-4 :

The QUARTER function can also be used to find the total product sold for every QUARTER. To demonstrate create a table named.

Product :

CREATE TABLE Product(
  Product_id INT AUTO_INCREMENT,  
  Product_name VARCHAR(100) NOT NULL,
  Buying_price DECIMAL(13, 2) NOT NULL,
  Selling_price DECIMAL(13, 2) NOT NULL,
  Selling_Date Date NOT NULL,
  PRIMARY KEY(Product_id)
);

Now insert some data to the Product table :

INSERT INTO  
  Product(Product_name, Buying_price, Selling_price, Selling_Date)
VALUES
  ('Audi Q8', 10000000.00, 15000000.00, '2018-01-26' ),
  ('Volvo XC40', 2000000.00, 3000000.00, '2018-04-20' ),
  ('Audi A6', 4000000.00, 5000000.00, '2018-07-25' ),
  ('BMW X5', 5000500.00, 7006500.00, '2018-10-18'  ),
  ('Jaguar XF', 5000000, 7507000.00, '2018-01-27'  ),
  ('Mercedes-Benz C-Class', 4000000.00, 6000000.00, '2018-04-01'  ),
  ('Jaguar F-PACE', 5000000.00, 7000000.00, '2018-12-26'  ),
  ('Porsche Macan', 6500000.00, 8000000.00, '2018-04-16' ) ;

So, Our table looks like :

Product_id	Product_name	Buying_price	Selling_price	Selling_Date;
1	Audi Q8	10000000.00	15000000.00	2018-01-26
2	Volvo XC40	2000000.00	3000000.00	2018-04-20
3	Audi A6	4000000.00	5000000.00	2018-07-25
4	BMW X5	5000500.00	7006500.00	2018-10-18
5	Jaguar XF	5000000.00	7507000.00	2019-01-27
6	Mercedes-Benz C-Class	4000000.00	6000000.00	2019-04-01
7	Jaguar F-PACE	5000000.00	7000000.00	2019-12-26
8	Porsche Macan	6500000.00	8000000.00	2020-04-16

Now, we are going to find the number of products sold per quarter by using the MONTH () function.

SELECT 
    QUARTER(Selling_Date) as quarter, 
    COUNT(Product_id) as PRODUCT_SOLD 
FROM 
    Product   
GROUP BY QUARTER(Selling_Date)       
ORDER BY QUARTER(Selling_Date);

Output :

QUARTER	PRODUCT_SOLD
1	2
2	3
3	1
4	2

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