Phpmyadmin create table current timestamp
Creating fields with time stamps that contains the creation and / or the last modification dates in MySQL using PHPMyAdmin is straightforward.
No need for specific SQL code in latest versions, as it is now possible to have two different fields in the same table with current timestamp as default, and therefore no need to use triggers anymore for this purpose.
In the table creation interface, add two fields – one for the creation date, and one for the modification – with options as described : both as timestamp, current timestamp as default value, and attribute “on update” for the last modification date.
Once created, table structure should be similar to below screenshot.
MySQL table creation date
Give it a try by creating a new table entry :
In the browsing interface, see your entry newly created – both creation and modification dates are equal.
Try updating one of the values of one entry:
And see directly the change : modification date has been updated to match change time, and creation time hasn’t.
It is of course also possible to do it using SQL, here’s the corresponding code :
CREATE TABLE `table_test` (
`ID` int(11) NOT NULL,
`Description` varchar(255) NOT NULL,
`CreationDate` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`ModificationDate` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
How to set a MySQL current timestamp on create and update
To set a MySQL current timestamp on table create and table update, when creating a table, put two different fields with the type TIMESTAMP, and the default value MYSQL current timestamp, also called current time. The modification date field should also have the attribute on update default timestamp.
The first field will be the creation timestamp, and must be with type timestamp, and default set to current time. When creating a new record, that field will be filled in with the MySQL current timestamp.
The second field will be the modification timestamp, and must also be set with type timestamp, plus with the attribute on update CURRENT_TIMESTAMP. That way, when creating a record, the modification date will be set to MySQL current timestamp. And also, whenever the record will be modified, the modification timestamp field will be updated as well with the MySQL current timestamp.
Automatic Initialization and Updating for TIMESTAMP and DATETIME
What is a MySQL timestamp?
The MySQL timestamp is a way to represent a time and a date altogether, in the same unit of storage.
A MySQL timestamp ranges from first January 1970 in server UTC time, up to 19 January 2038.
This means that usage of the MySQL timestamp are limited, as they will need to be changed by year 2038, however most likely a patch will take care of that.
The MySQL timestamp is one of the two ways to store in a MySQL database both date and time, along with the datetime format.
It is usually better to use a MySQL timestamp to store dates such as modification and creation date of a record in the MySQL database as it is the favourite way to use date and time within a database.
However, all these values along with the standard date format are related, and can even work together.
Rudolph Henry, 2018-08-19
Lo pasé muy bien leyendo esta información, sigan con el buen trabajo
Kay Chapman, 2018-08-19
Grazie è stato utile
Kate Schultz, 2018-08-19
Amy Coleman, 2018-08-19
Ann Perez, 2018-08-19
Eric Parker, 2018-08-19
Sonunda çözümü bulduğuma inanamıyorum, bu uzun zamandan beri bir kabustu, şimdi çözüldü
Janice Perry, 2018-08-19
Привет, я видел вашу статью, и это помогло мне решить мою проблему, спасибо большое
Tidak tahu bagaimana untuk mengucapkan terima kasih, tetapi itu adalah jenius murni, terima kasih