Question about relations

export const users = mysqlTable('user', {
  id: varchar('id', { length: 255 }).notNull().primaryKey(),
  name: varchar('name', { length: 255 }),
  email: varchar('email', { length: 255 }).notNull(),
  emailVerified: timestamp('emailVerified', {
    mode: 'date',
    fsp: 3
  }).defaultNow(),
  image: varchar('image', { length: 255 })
})

export const comments = mysqlTable('comment', {
  id: varchar('id', { length: 255 }).notNull().primaryKey(),
  body: varchar('body', { length: 255 }).notNull(),
  created_at: timestamp('created_at', {
    mode: 'date',
    fsp: 6
  }).defaultNow(),
  updated_at: timestamp('updated_at', {
    mode: 'date',
    fsp: 6
  }).defaultNow(),
  userId: varchar('userId', { length: 255 })
    .notNull()
    .references(() => users.id)
})