/*
 * This file is necessary because MySQL does not support
 * renaming indexes.
 */
DROP INDEX ix_image_properties_image_id_name ON image_properties;

/* Rename the `key` column to `name` */
ALTER TABLE image_properties
CHANGE COLUMN name `key` VARCHAR(255) NOT NULL;

CREATE UNIQUE INDEX ix_image_properties_image_id_key ON image_properties (image_id, key);