anchor.diff:    PRIMARY KEY (`id`),
     UNIQUE KEY(`projectname`),
     UNIQUE KEY(`inode_pid`, `inode_name`),
  +  KEY user_idx(`username`),
     FOREIGN KEY (`username`) REFERENCES `users` (`email`) ON DELETE NO ACTION ON UPDATE NO ACTION,
     FOREIGN KEY (`inode_pid`,`inode_name`) REFERENCES `hops`.`hdfs_inodes`(`parent_id`,`name`) ON DELETE CASCADE ON UPDATE NO ACTION
   ) ENGINE=ndbcluster;
  
positive.code: (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `activity` varchar(128) NOT NULL,
    `hdfs_user_id` binary(16) NOT NULL,
    `created` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    `parent_id` int NOT NULL,
    `name` varchar(255) NOT NULL,
  
negative.code:   KEY transaction_date_idx(transaction_date),
    KEY action_idx(action),
    KEY username_idx(username)
    FOREIGN KEY username_idx(`username`) REFERENCES `users` (`email`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  ) ENGINE=ndbcluster;
  
  CREATE VIEW `projects_last_payment` AS
  