SQLSTATE[HY000]: General error: 1025 Error on rename of I'm getting this error: 


  
  SQLSTATE[HY000]: General error: 1025 Error on rename of './salt/ghost' to './salt/#sql2-4ab-630b' (errno: 152). Failing Query:
  "ALTER TABLE ghost DROP FOREIGN KEY ghost.row_id"
  


I looked for some information but I didn't get a solution..any help? 

This is my DDL:

ghost,"CREATE TABLE `ghost` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `packet_number` int(11) DEFAULT NULL,
  `tbl_name` varchar(50) DEFAULT NULL,
  `row_id` int(11) DEFAULT NULL,
  `row_id2` int(11) DEFAULT NULL,
  `column_name` varchar(50) DEFAULT NULL,
  `old_value` mediumblob,
  `new_value` mediumblob,
  `ghost_action` varchar(255) DEFAULT NULL,
  `ghost_user_id` int(11) DEFAULT NULL,
  `ghost_action_comments` varchar(255) DEFAULT NULL,
  `ghost_status_id` int(11) DEFAULT '1',
  `ghost_status_comments` varchar(255) DEFAULT NULL,
  `serialized` mediumblob,
  `parent_id` int(11) DEFAULT NULL,
  `created_at` datetime NOT NULL,
  `updated_at` datetime NOT NULL,
  `created_by` bigint(20) DEFAULT NULL,
  `updated_by` bigint(20) DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `fk_change_1_idx` (`ghost_user_id`),
  KEY `fk_change_2_idx` (`ghost_status_id`),
  KEY `row_id2_idx` (`row_id2`),
  CONSTRAINT `ghost_ghost_status_id_ghost_status_id` FOREIGN KEY (`ghost_status_id`) REFERENCES `ghost_status` (`id`),
  CONSTRAINT `ghost_ghost_user_id_sf_guard_user_id` FOREIGN KEY (`ghost_user_id`) REFERENCES `sf_guard_user` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=120450 DEFAULT CHARSET=utf8"


Javi
Without knowing your DDL, I did find this on the docs regarding error code 1025, in one of the user comments:


  To avoid getting this error while trying to drop a foreign key, use the constraint name rather than the column name of the foreign key.


So, instead of dropping the ghost.row_id column, try dropping the foreign key using the FK name.