empty 'author' and 'id' attributes in change set

General Discussion
1

So it happened that I forgot to include both ‘author’ and ‘id’ attributes in a change set.

{
  “databaseChangeLog”: [
    {    
      “changeSet”: {
          “changes”: [
        { “sql”: "set session_authorization=pawel;
        ALTER TABLE ONLY table1 ALTER COLUMN id SET DEFAULT nextval(‘table1_id_seq’::regclass);
        SELECT setval(‘table1_id_seq’, max(id) + 10) FROM table1;
        reset session authorization;
        "
        }
        ]
      }
    }
  ]
}

Liquibase error-ed out as expected with message:

Unexpected error running Liquibase: ERROR: null value in column “id” violates not-null constraint
  Detail: Failing row contains (null, null, liquibase/pawel/some_update…, 2017-06-26 20:04:05.067686, 2, EXECUTED, 7:b169dadba628d406299d40596bf63325, sql, , null, 3.5.3, null, null, 8521845043).

but it did alter the table.

So as I understand it the content of the “sql” and insert into ‘databasechangelog’ were not executed in the same transaction.

What am I doing wrong?
Did I misunderstand meaning of “runInTransaction” attribute?

Cheers