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How to set default date time as system date time in MySQL?
You can use CURRENT_TIMESTAMP to set system date time.
Let us first create a table −
mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, ClientFirstName varchar(20), ClientLastName varchar(20), ClientAge int ); Query OK, 0 rows affected (0.66 sec)
Following is the query to set default datetime as system date time in MySQL −
mysql> alter table DemoTable add column ClientProjectDeadline timestamp default current_timestamp; Query OK, 0 rows affected (0.46 sec) Records: 0 Duplicates: 0 Warnings: 0
Let us check the description of table once again −
mysql> desc DemoTable;
This will produce the following output −
+-----------------------+-------------+------+-----+-------------------+----------------+ | Field | Type | Null | Key | Default | Extra | +-----------------------+-------------+------+-----+-------------------+----------------+ | Id | int(11) | NO | PRI | NULL | auto_increment | | ClientFirstName | varchar(20) | YES | | NULL | | | ClientLastName | varchar(20) | YES | | NULL | | | ClientAge | int(11) | YES | | NULL | | | ClientProjectDeadline | timestamp | YES | | CURRENT_TIMESTAMP | | +-----------------------+-------------+------+-----+-------------------+----------------+ 5 rows in set (0.22 sec)
Updated on: 30-Jul-2019
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