ALTER TABLE `groups` ADD FOREIGN KEY ( `company_id` ) REFERENCES `summaries`.`companies` (
`id`
) ON DELETE CASCADE ;
MySQL said:
#1452 - Cannot add or update a child row: a foreign key constraint fails (`summaries/#sql-164a_33c`, CONSTRAINT `#sql-164a_33c_ibfk_1` FOREIGN KEY (`company_id`) REFERENCES `companies` (`id`) ON DELETE CASCADE)
companies.id
is primary auto increment int (11)
company_id
is ] index int (11)
Я не понимаю сообщения об ошибке. Может ли кто-нибудь пролить свет на это?