CREATE TABLE `mdt_ranks` (
	`id` int AUTO_INCREMENT NOT NULL,
	`department` enum('police','ems','fire') NOT NULL,
	`grade` int NOT NULL,
	`label` varchar(64) NOT NULL,
	`permissions` json NOT NULL DEFAULT ('[]'),
	CONSTRAINT `mdt_ranks_id` PRIMARY KEY(`id`)
);
--> statement-breakpoint
ALTER TABLE `mdt_users` ADD `department` enum('police','ems','fire');--> statement-breakpoint
ALTER TABLE `mdt_users` ADD `grade` int;--> statement-breakpoint
CREATE INDEX `rank_dept_grade_idx` ON `mdt_ranks` (`department`,`grade`);