https://github.com/apache/airflow/blob/main/airflow/cli/commands/task_command.py#L145
"""Invocation instance of a DAG.
    A DAG run can be created by the scheduler (i.e. scheduled runs), or by an
    external trigger (i.e. manual runs).
    """
    __tablename__ = "dag_run"
    id = Column(Integer, primary_key=True)
    dag_id = Column(StringID(), nullable=False)
    queued_at = Column(UtcDateTime)
    execution_date = Column(UtcDateTime, default=timezone.utcnow, nullable=False)
    start_date = Column(UtcDateTime)
    end_date = Column(UtcDateTime)
    _state = Column("state", String(50), default=DagRunState.QUEUED)
    run_id = Column(StringID(), nullable=False)
    creating_job_id = Column(Integer)
    external_trigger = Column(Boolean, default=True)
    run_type = Column(String(50), nullable=False)
    conf = Column(PickleType)
    
    data_interval_start = Column(UtcDateTime)
    data_interval_end = Column(UtcDateTime)
    
    last_scheduling_decision = Column(UtcDateTime)
    dag_hash = Column(String(32))
    
    
    
    log_template_id = Column(
        Integer,