Question

Is it possible to write a query that will return only the value of a variable returned by MySQL’s SHOW STATUS? Ideally I want something like:

SELECT `Value` FROM (SHOW STATUS LIKE 'Com_delete')

or something similar.

Is this possible?

Answer 1

If you are using MySQL 5.1 or above, you should be able to get that data from INFORMATION_SCHEMA like this for global status:

select VARIABLE_VALUE 
from information_schema.GLOBAL_STATUS 
where VARIABLE_NAME = 'Com_delete';

Or if you want the session status instead:

select VARIABLE_VALUE 
from information_schema.SESSION_STATUS 
where VARIABLE_NAME = 'Com_delete';

The default for SHOW STATUS is SESSION status, so the latter query would work as a replacement for that.