apply 1.hcl
cmpshow t1 t2 1.sql

-- 1.hcl --
schema "$db" {}

table "t1" {
  schema = schema.$db
  column "a" {
    null = false
    type = uuid
  }
  column "b" {
    null = true
    type = timestamp(6)
  }
  index "t1_a_b" {
    on {
      column = column.a
    }
    on {
      desc   = true
      column = column.b
    }
    unique = true
  }
}

table "t2" {
  schema = schema.$db
  column "a" {
    null = false
    type = uuid
  }
  primary_key {
    columns = [column.a]
  }
}

-- 1.sql --
                   Table "script_index_issue_557.t1"
 Column |            Type             | Collation | Nullable | Default
--------+-----------------------------+-----------+----------+---------
 a      | uuid                        |           | not null |
 b      | timestamp without time zone |           |          |
Indexes:
    "t1_a_b" UNIQUE, btree (a, b DESC)


       Table "script_index_issue_557.t2"
 Column | Type | Collation | Nullable | Default
--------+------+-----------+----------+---------
 a      | uuid |           | not null |
Indexes:
    "t2_pkey" PRIMARY KEY, btree (a)