Knex select from multiple tables

Question

I want to run following SQL with knex:

select * from (
  (select * from foo)
  union all
  (select * from bar)) as biz limit 10 offset 20;

Is there a way to do it without knex.raw?

Answer 1

knex does support union and unionAll. it's documented

knex.select().from(function() {
    this.select().from('foo')
        .unionAll(function() {
            this.select().from('bar')
        }).as('biz')
}).limit(10).offset(20).toString()

Output:

select * from (select * from `foo` union all select * from `bar`) as `biz` limit 10 offset 20