皆さんはDEFAULT CURRENT_ TIMESTAMP ON UPDATE CURRENT_ TIMESTAMPをご存じでしょうか？ この指定を行ったカラムはINSERTやUPDATEを行った際に自動更新をしてくれるようになります。特に忘れがちなcreated_ atやupdated_ atの挿入や更新を自動管理できる、非常に便利な機能です。

This blog tell the difference between the Datetime vs Timestamp in MySQL and PHP. 1> Datetime and Timestamp are used to store datetime and then retrieve the datetime back. 2> Basically, In this we ...

The TIMESTAMP data type is the only data type which is used to have MySQL automatically set the time when a row is inserted and/or updated. DATETIME columns cant do this. We can define more than one ...

ALTER TABLE mysql.innodb_table_stats MODIFY last_update TYPE_MYSQL_TIMESTAMP NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(); SHOW CREATE TABLE mysql.innodb_table_stats; ALTER TABLE ...

`clustered_index_size` bigint(20) unsigned NOT NULL, `sum_of_other_index_sizes` bigint(20) unsigned NOT NULL, PRIMARY KEY (`database_name`,`table_name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 ...

I'm a MySQL noob. As such, certain things confuse the heck out of me, due to a general lack of experience. Here is what I am trying to accomplish:<BR><BR>I want to calculate the difference, in days, ...