cherrypick/packages/backend/migration/1563757595828-UsedUsername.js

export class UsedUsername1563757595828 {
    async up(queryRunner) {
        await queryRunner.query(`CREATE TABLE "used_username" ("username" character varying(128) NOT NULL, "createdAt" TIMESTAMP WITH TIME ZONE NOT NULL, CONSTRAINT "PK_78fd79d2d24c6ac2f4cc9a31a5d" PRIMARY KEY ("username"))`);
    }
    async down(queryRunner) {
        await queryRunner.query(`DROP TABLE "used_username"`);
    }
}