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Get the date/time of the last change to a MySQL database?
You can get the date/time of the last change to a MySQL database with the help of INFORMATION_SCHEMA.TABLES. The syntax is as follows −
SELECT update_time FROM information_schema.tables WHERE table_schema = 'yourDatabaseName’' AND table_name = 'yourTableName’;
To understand the above syntax, let us create a table. The query to create a table is as follows −
mysql> create table TblUpdate -> ( -> Id int not null auto_increment primary key, -> Name varchar(20) -> ); Query OK, 0 rows affected (0.49 sec)
Insert some records in the table using insert command. The query is as follows −
mysql> insert into TblUpdate(Name) values('John');
Query OK, 1 row affected (0.18 sec)
mysql> insert into TblUpdate(Name) values('Carol');
Query OK, 1 row affected (0.22 sec)Now you can display all records from the table using select statement. The query is as follows −
mysql> select *from TblUpdate;
Output
+----+-------+ | Id | Name | +----+-------+ | 1 | John | | 2 | Carol | +----+-------+ 2 rows in set (0.00 sec)
Now you can update the table using the following query −
mysql> update TblUpdate set Name = 'James' where Id=2; Query OK, 1 row affected (0.15 sec) Rows matched: 1 Changed: 1 Warnings: 0
Therefore, we just updated our table above. Now get the date/time of the last change to a MySQL database using the following query −
mysql> SELECT update_time -> FROM information_schema.tables -> WHERE table_schema = 'sample' -> AND table_name = 'TblUpdate' -> ;
The following is the output displaying we updated the database on 2019-02-09 22:49:44 −
+---------------------+ | UPDATE_TIME | +---------------------+ | 2019-02-09 22:49:44 | +---------------------+ 1 row in set (0.89 sec)
Updated on: 30-Jul-2019
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