MySQL - CURTIME() Function

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 CURTIME() function is used to get the current time. The resultant value is a string or a numerical value based on the context and, the time returned will be in the 'hh:mm:ss' or hhmmss format.
Following is the syntax of the above function –
CURTIME();

Following example demonstrates the usage of the CURTIME() function –
mysql> SELECT CURTIME();
+-----------+
| CURTIME() |
+-----------+
|  17:50:10 |
+-----------+
1 row in set (0.00 sec)
Following is an example of this function in numerical context –
mysql> SELECT CURTIME()+0;
+-------------+
| CURTIME()+0 |
+-------------+
|      175033 |
+-------------+
1 row in set (0.00 sec)
You can add seconds to the current time as shown below –
mysql> SELECT CURTIME()+12;
+--------------+
| CURTIME()+12 |
+--------------+
|       175124 |
+--------------+
1 row in set (0.00 sec)
We can also subtract the desired number of seconds from the current time using this function –
mysql> SELECT CURTIME()-22213;
+-----------------+
| CURTIME()-22213 |
+-----------------+
|          152933 |
+-----------------+
1 row in set (0.00 sec)
Let us create another table with name Sales in MySQL database using CREATE statement as follows –
mysql> CREATE TABLE sales(
	ID INT,
	ProductName VARCHAR(255),
	CustomerName VARCHAR(255),
	DispatchDate date,
	DispatchTime time,
	Price INT,
	Location VARCHAR(255)
);
Query OK, 0 rows affected (2.22 sec)
Now, we will insert 5 records in Sales table using INSERT statements −
insert into sales values (1, 'Key-Board', 'Raja', DATE('2019-09-01'), TIME('11:00:00'), 7000, 'Hyderabad');
insert into sales values (2, 'Earphones', 'Roja', DATE('2019-05-01'), TIME('11:00:00'), 2000, 'Vishakhapatnam');
insert into sales values (3, 'Mouse', 'Puja', DATE('2019-03-01'), TIME('10:59:59'), 3000, 'Vijayawada');
insert into sales values (4, 'Mobile', 'Vanaja', DATE('2019-03-01'), TIME('10:10:52'), 9000, 'Chennai');
insert into sales values (5, 'Headset', 'Jalaja', DATE('2019-04-06'), TIME('11:08:59'), 6000, 'Goa');
Following is another example of this function —
mysql> SELECT ProductName, CustomerName, DispatchDate, Price, DATEDIFF(CURRENT_DATE, DispatchDate) as difference_in_days, TIMEDIFF(CURTIME(), DispatchTime) as time_difference FROM sales;
+-------------+--------------+--------------+-------+--------------------+-----------------+
| ProductName | CustomerName | DispatchDate | Price | difference_in_days | time_difference |
+-------------+--------------+--------------+-------+--------------------+-----------------+
|   Key-Board |         Raja |   2019-09-01 |  7000 |                679 |        06:52:52 |
|   Earphones |         Roja |   2019-05-01 |  2000 |                802 |        06:52:52 |
|       Mouse |         Puja |   2019-03-01 |  3000 |                863 |        06:52:53 |
|      Mobile |       Vanaja |   2019-03-01 |  9000 |                863 |        07:42:00 |
|     Headset |       Jalaja |   2019-04-06 |  6000 |                827 |        06:43:53 |
+-------------+--------------+--------------+-------+--------------------+-----------------+
5 rows in set (0.00 sec)
Suppose we have created a table named SubscribersData with 5 records in it using the following queries –
mysql> CREATE TABLE SubscribersData(
	SubscriberName VARCHAR(255),
	PackageName VARCHAR(255),
	SubscriptionDate date,
	SubscriptionTime time
);
insert into SubscribersData values('Raja', 'Premium', Date('2020-10-21'), Time('20:53:49'));
insert into SubscribersData values('Roja', 'Basic', Date('2020-11-26'), Time('10:13:19'));
insert into SubscribersData values('Puja', 'Moderate', Date('2021-03-07'), Time('05:43:20'));
insert into SubscribersData values('Vanaja', 'Basic', Date('2021-02-21'), Time('16:36:39'));
insert into SubscribersData values('Jalaja', 'Premium', Date('2021-01-30'), Time('12:45:45'));
Following query calculates and displays the remaining number of days and time for the subscription to complete —
mysql> SELECT SubscriberName, PackageName, DATEDIFF(CURRENT_DATE, SubscriptionDate) as RemainingDays, TIMEDIFF(CURTIME(), SubscriptionTime) as RemainingTime FROM SubscribersData;
+----------------+-------------+---------------+---------------+
| SubscriberName | PackageName | RemainingDays | RemainingTime |
+----------------+-------------+---------------+---------------+
|           Raja |     Premium |           263 |     -03:00:17 |
|           Roja |       Basic |           227 |      07:40:13 |
|           Puja |    Moderate |           126 |      12:10:12 |
|         Vanaja |       Basic |           140 |      01:16:53 |
|         Jalaja |     Premium |           162 |      05:07:47 |
+----------------+-------------+---------------+---------------+
5 rows in set (0.05 sec)

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