use postgresql

migrations/postgres/2022-03-21-162914_create_users/down.sql

@@ -0,0 +1,2 @@
+-- This file should undo anything in `up.sql`
+DROP TABLE users;

migrations/postgres/2022-03-21-162914_create_users/up.sql

@@ -0,0 +1,7 @@
+-- Your SQL goes here
+CREATE TABLE users (
+  id SERIAL PRIMARY KEY,
+  name VARCHAR NOT NULL UNIQUE,
+  token VARCHAR NOT NULL UNIQUE,
+  is_admin BOOLEAN NOT NULL DEFAULT FALSE
+);