CREATE TABLE "user" (
	"username" varchar(255) PRIMARY KEY
);
CREATE TABLE "oauth_connection" (
	"username" varchar(255) CONSTRAINT user_username REFERENCES user(username),
	"rank" int,
	"provider_id" int CONSTRAINT oauth_provider_id REFERENCES oauth_provider(id),
	"provider_user_id" varchar(255),
	"display_name" varchar(255),
	"access_token" varchar(255),
	"expires_at" datetime
);
CREATE TABLE "oauth_provider" (
	"id" int PRIMARY KEY,
	"name" varchar(255)
);