Subquery/join in relational query

await db.query.posts.findFirst({
  where: and(
    eq(posts.type, 'blog'),
    inArray(
      posts.userId,
      db
        .select({ id: users.id })
        .from(users)
        .where(and(eq(users.id, userId), isNotNull(users.email)))
    )
  )
});

await db.query.posts.findFirst({
  with: { user: true },
  where: and(
    eq(posts.type, 'blog'),
    isNotNull(users.email)
  )
});