text: CREATE SEQUENCE seq_qd_schema_update START WITH 1 INCREMENT BY 1;
  
  CREATE TABLE qd_schema_update (
      schema_update_id BIGINT      NOT NULL DEFAULT nextval( 'seq_qd_schema_update' )
    , major            INTEGER     NOT NULL
    , minor            INTEGER     NOT NULL
    , maintenance      INTEGER     NOT NULL
    , applied_at       TIMESTAMPTZ NOT NULL
  );
  
  ALTER TABLE qd_schema_update ADD CONSTRAINT pk_qd_schema_update PRIMARY KEY (
    schema_update_id
  );
  