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How to convert DateTime to a number in MySQL?
To convert the date time to a number in MySQL, the syntax is as follows −
SELECT UNIX_TIMESTAMP(yourColumnName) as anyVariableName FROM yourTableName;
To understand the above syntax, let us create a table. The query to create a table is as follows −
mysql> create table DateTimeToNumberDemo -> ( -> Id int NOT NULL AUTO_INCREMENT, -> releasedDate datetime, -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (0.46 sec)
Insert some records in the table using insert command. The query is as follows −
mysql> insert into DateTimeToNumberDemo(releasedDate) values(now());
Query OK, 1 row affected (0.19 sec)
mysql> insert into DateTimeToNumberDemo(releasedDate) values(curdate());
Query OK, 1 row affected (0.24 sec)
mysql> insert into
DateTimeToNumberDemo(releasedDate) values('1978-01-19');
Query OK, 1 row affected (0.55 sec)
mysql> insert into DateTimeToNumberDemo(releasedDate) values('2016-09-13');
Query OK, 1 row affected (0.46 sec)
mysql> insert into DateTimeToNumberDemo(releasedDate) values('2017-11-12');
Query OK, 1 row affected (0.22 sec)
mysql> insert into DateTimeToNumberDemo(releasedDate) values('2018-12-09');
Query OK, 1 row affected (0.21 sec)Display all records from the table using select statement. The query is as follows −
mysql> select *from DateTimeToNumberDemo;
The following is the output −
+----+---------------------+ | Id | releasedDate | +----+---------------------+ | 1 | 2019-01-12 21:20:57 | | 2 | 2019-01-12 00:00:00 | | 3 | 1978-01-19 00:00:00 | | 4 | 2016-09-13 00:00:00 | | 5 | 2017-11-12 00:00:00 | | 6 | 2018-12-09 00:00:00 | +----+---------------------+ 6 rows in set (0.00 sec)
The following is the query to convert date time to a number −
mysql> select unix_timestamp(releasedDate) as DateToNumber from DateTimeToNumberDemo;
The following is the output −
+--------------+ | DateToNumber | +--------------+ | 1547308257 | | 1547231400 | | 253996200 | | 1473705000 | | 1510425000 | | 1544293800 | +--------------+ 6 rows in set (0.00 sec)
Updated on: 30-Jun-2020
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