MySQL - DAYNAME() Function

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The DATE, DATETIME and TIMESTAMP datatypes in MySQL are used to store the date, date and time, time stamp values respectively. Where a time stamp is a numerical value representing the number of milliseconds from '1970-01-01 00:00:01' UTC (epoch) to the specified time. MySQL provides a set of functions to manipulate these values.

The MYSQL DAYNAME() function is used to retrieve the name of the weekday of the given date. This function returns the string value which can be either of: Sunday, Monday, Tuesday, Wends day, Thursday, Friday, Saturday Or, NULL.

Syntax

Following is the syntax of the above function –

DAYNAME(date);

Where, date is the date value from which you need to get the weekday name.

Example 1

Following example demonstrates the usage of the DAYNAME() function –

mysql> SELECT DAYNAME('2019-05-25');
+-----------------------+
| DAYNAME('2019-05-25') |
+-----------------------+
|              Saturday |
+-----------------------+
1 row in set (0.07 sec)

Example 2

Following is another example of this function –

mysql> SELECT DAYNAME('1998-11-21');
+-----------------------+
| DAYNAME('1998-11-21') |
+-----------------------+
|              Saturday |
+-----------------------+
1 row in set (0.00 sec)

Example 3

If the day part in the given date is 0 this function returns NULL —

mysql> SELECT DAYNAME('2017-00-00');
+-----------------------+
| DAYNAME('2017-00-00') |
+-----------------------+
|                  NULL |
+-----------------------+
1 row in set, 1 warning (0.00 sec)
mysql> SELECT DAYNAME('1789-02-00');
+-----------------------+
| DAYNAME('1789-02-00') |
+-----------------------+
|                  NULL |
+-----------------------+
1 row in set, 1 warning (0.00 sec)

Example 4

If you pass an empty string or a non-string value as an argument this function returns NULL.

mysql> SELECT DAYNAME('');
+-------------+
| DAYNAME('') |
+-------------+
|        NULL |
+-------------+
1 row in set, 1 warning (0.00 sec)
mysql> SELECT DAYNAME(1990-11-11);
+---------------------+
| DAYNAME(1990-11-11) |
+---------------------+
|                NULL |
+---------------------+
1 row in set, 1 warning (0.00 sec)

Example 5

We can also pass the date-time expression as an argument to this function –

mysql> SELECT DAYNAME('2015-09-05 09:40:45.2300');
+-------------------------------------+
| DAYNAME('2015-09-05 09:40:45.2300') |
+-------------------------------------+
|                            Saturday |
+-------------------------------------+
1 row in set (0.00 sec)

Example 6

In the following example we are retrieving weekday name from the current date —

mysql> SELECT DAYNAME(CURDATE());
+--------------------+
| DAYNAME(CURDATE()) |
+--------------------+
|            Tuesday |
+--------------------+
1 row in set (0.00 sec)

Example 7

In the following example we are retrieving the weekday name from the current timestamp —

mysql> SELECT DAYNAME(CURRENT_TIMESTAMP());
+------------------------------+
| DAYNAME(CURRENT_TIMESTAMP()) |
+------------------------------+
|                      Tuesday |
+------------------------------+
1 row in set (0.00 sec)

Example 8

You can also pass the column name as an argument to this function. Let us create a table with name MyPlayers in MySQL database using CREATE statement as shown below –

mysql> CREATE TABLE MyPlayers(
	ID INT,
	First_Name VARCHAR(255),
	Last_Name VARCHAR(255),
	Date_Of_Birth date,
	Place_Of_Birth VARCHAR(255),
	Country VARCHAR(255),
	PRIMARY KEY (ID)
);
Now, we will insert 7 records in MyPlayers table using INSERT statements:
mysql> insert into MyPlayers values(1, 'Shikhar', 'Dhawan', DATE('1981-12-05'), 'Delhi', 'India');
mysql> insert into MyPlayers values(2, 'Jonathan', 'Trott', DATE('1981-04-22'), 'CapeTown', 'SouthAfrica');
mysql> insert into MyPlayers values(3, 'Kumara', 'Sangakkara', DATE('1977-10-27'), 'Matale', 'Srilanka');
mysql> insert into MyPlayers values(4, 'Virat', 'Kohli', DATE('1988-11-05'), 'Delhi', 'India');
mysql> insert into MyPlayers values(5, 'Rohit', 'Sharma', DATE('1987-04-30'), 'Nagpur', 'India');
mysql> insert into MyPlayers values(6, 'Ravindra', 'Jadeja', DATE('1988-12-06'), 'Nagpur', 'India');
mysql> insert into MyPlayers values(7, 'James', 'Anderson', DATE('1982-06-30'), 'Burnley', 'England');

Following query extracts the weekday name from all the entities of the Date_Of_Birth column of the table MyPlayers —

mysql> SELECT First_Name, Last_Name, Date_Of_Birth, Country,
DAYNAME(Date_Of_Birth) FROM MyPlayers;
+------------+------------+---------------+-------------+------------------------+
| First_Name |  Last_Name | Date_Of_Birth |     Country | DAYNAME(Date_Of_Birth) |
+------------+------------+---------------+-------------+------------------------+
|    Shikhar |     Dhawan |    1981-12-05 |       India |               Saturday |
|   Jonathan |      Trott |    1981-04-22 | SouthAfrica |              Wednesday |
|     Kumara | Sangakkara |    1977-10-27 |    Srilanka |               Thursday |
|      Virat |      Kohli |    1988-11-05 |       India |               Saturday |
|      Rohit |     Sharma |    1987-04-30 |       India |               Thursday |
|   Ravindra |     Jadeja |    1988-12-06 |       India |                Tuesday |
|      James |   Anderson |    1982-06-30 |     England |              Wednesday |
+------------+------------+---------------+-------------+------------------------+
7 rows in set (0.00 sec)

Example 9

Suppose we have created a table named dispatches_data with 5 records in it using the following queries –

mysql> CREATE TABLE dispatches_data(
	ProductName VARCHAR(255),
	CustomerName VARCHAR(255),
	DispatchTimeStamp timestamp,
	Price INT,
	Location VARCHAR(255)
);
insert into dispatches_data values('Key-Board', 'Raja', TIMESTAMP('2019-05-04', '15:02:45'), 7000, 'Hyderabad');
insert into dispatches_data values('Earphones', 'Roja', TIMESTAMP('2019-06-26', '14:13:12'), 2000, 'Vishakhapatnam');
insert into dispatches_data values('Mouse', 'Puja', TIMESTAMP('2019-12-07', '07:50:37'), 3000, 'Vijayawada');
insert into dispatches_data values('Mobile', 'Vanaja' , TIMESTAMP ('2018-03-21', '16:00:45'), 9000, 'Chennai');
insert into dispatches_data values('Headset', 'Jalaja' , TIMESTAMP('2018-12-30', '10:49:27'), 6000, 'Goa');

Following query retrieves the day of the weekday name values from the DispatchTimeStamp column —

mysql> SELECT ProductName, CustomerName, DispatchTimeStamp, Price,
DAYNAME(DispatchTimeStamp) FROM dispatches_data;
+-------------+--------------+---------------------+-------+----------------------------+
| ProductName | CustomerName |   DispatchTimeStamp | Price | DAYNAME(DispatchTimeStamp) |
+-------------+--------------+---------------------+-------+----------------------------+
|   Key-Board |         Raja | 2019-05-04 15:02:45 |  7000 |                   Saturday |
|   Earphones |         Roja | 2019-06-26 14:13:12 |  2000 |                  Wednesday |
|       Mouse |         Puja | 2019-12-07 07:50:37 |  3000 |                   Saturday |
|      Mobile |       Vanaja | 2018-03-21 16:00:45 |  9000 |                  Wednesday |
|     Headset |       Jalaja | 2018-12-30 10:49:27 |  6000 |                     Sunday |
+-------------+--------------+---------------------+-------+----------------------------+
5 rows in set (0.00 sec)

Example 10

Suppose we have created a table named SubscriberDetails with 5 records in it using the following queries –

mysql> CREATE TABLE SubscriberDetails (
	SubscriberName VARCHAR(255),
	PackageName VARCHAR(255),
	SubscriptionTimeStamp timestamp
);
insert into SubscriberDetails values('Raja', 'Premium', TimeStamp('2020-10-21 20:53:49'));
insert into SubscriberDetails values('Roja', 'Basic', TimeStamp('2020-11-26 10:13:19'));
insert into SubscriberDetails values('Puja', 'Moderate', TimeStamp('2021-03-07 05:43:20'));
insert into SubscriberDetails values('Vanaja', 'Basic', TimeStamp('2021-02-21 16:36:39'));
insert into SubscriberDetails values('Jalaja', 'Premium', TimeStamp('2021-01-30 12:45:45'));

Following query retrieves and displays the weekday name of subscription for all the users —

mysql> SELECT SubscriberName, PackageName, SubscriptionTimeStamp,
DAYNAME(SubscriptionTimeStamp) FROM SubscriberDetails;
+----------------+-------------+-----------------------+--------------------------------+
| SubscriberName | PackageName | SubscriptionTimeStamp | DAYNAME(SubscriptionTimeStamp) |
+----------------+-------------+-----------------------+--------------------------------+
|            Ram |     Premium |   2020-10-21 20:53:49 |                      Wednesday |
|         Rahman |       Basic |   2020-11-26 10:13:19 |                       Thursday |
|         Robert |    Moderate |   2021-03-07 05:43:20 |                         Sunday |
|          Radha |       Basic |   2021-02-21 16:36:39 |                         Sunday |
|         Rajiya |     Premium |   2021-01-30 12:45:45 |                       Saturday |
+----------------+-------------+-----------------------+--------------------------------+
5 rows in set (0.00 sec)