Author here! Thanks for sharing :)

Which language is this?

  let points = 0;
  const usrs = await sql`select * from usr where country = 'JP'`;
  for (const usr of usrs) {
    points += usr.points;
  }

[1] https://github.com/porsager/postgres

Here's an example where it really shines:

  const users = [
    { name: 'Murray', age: 68 },
    { name: 'Walter', age: 80 },
  ];

  await sql`insert into users ${ sql(users) }`;