I have a customer log table that is starting to rapidly fill up (we have
hundreds of thousands of users, but many are transient, and use the service
for a few months, or use the free trial and quit, etc.)

CREATE TABLE `customers_log` (
`customer_log_id` bigint(20) unsigned NOT NULL auto_increment,
`customer_id` int(10) unsigned default '0',
`created_on` timestamp NOT NULL default CURRENT_TIMESTAMP on update
CURRENT_TIMESTAMP,
`type`
enum('View','Action','Admin','Search','Login','Logout','Access','General','A
PI'),
`source` enum('web','mobile','system'),
`body` text,
PRIMARY KEY (`customer_log_id`),
KEY `created_on` (`created_on`),
KEY `customers_id` (`customer_id`)
) ENGINE=InnoDB

What I'd like to do now is make a 'rolling log' in that I want to DELETE any
entries older than 90 days for EACH `customer_id`.

I'm not sure how to do that in a query? I'd rather not iterate over each
customer_id if I can help it.




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