MySQL: How can I get the timestamp of the last insertion to the database

Question

How can I check when was the last time (timestamp) that I wrote in the database, irrespectively of the database table that I inserted into?

Answer 1

Turned out to not be the answer (can't delete as accepted). See comments below this answer.

I wasn't able to use information_schema.tables update_time as the column wasn't being updated but for create_time this worked. It would work for update_time (if changed) if update_time gets updated which might be true in your setup.

select table_schema,table_name,max_time from information_schema.tables t1 JOIN 
 (select MAX(t2.create_time) AS max_time FROM 
  information_schema.tables t2 where  
  table_schema ='test') as t3  
on t1.create_time = t3.max_time;

Answer 2

Just use this SQL: SHOW TABLE STATUS; and check Update_time column.

Answer 3

Add a field for modified date in the table and use LAST_INSERT_ID() to determine the last row (if you're doing it right away). Otherwise just retrieve the most recent date from the modified field for the table.

Answer 4

This is basically what logging is all about.

On the CLI

1. execute SET GLOBAL log_output = 'TABLE';
2. execute SET GLOBAL general_log = 'ON';

Now, a table general_log inside mysql database will log all such actions on database. Use phpMyadmin or similar to view these. You can query from their results very effectively.