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)
Published on 19-Mar-2019 10:57:57
