4addfa1236f1_add_fractional_seconds_to_mysql_tables.py 文件源码

def downgrade():
    if context.config.get_main_option('sqlalchemy.url').startswith('mysql'):
        op.alter_column(table_name='dag', column_name='last_scheduler_run', type_=mysql.DATETIME())
        op.alter_column(table_name='dag', column_name='last_pickled', type_=mysql.DATETIME())
        op.alter_column(table_name='dag', column_name='last_expired', type_=mysql.DATETIME())

        op.alter_column(table_name='dag_pickle', column_name='created_dttm', type_=mysql.DATETIME())

        op.alter_column(table_name='dag_run', column_name='execution_date', type_=mysql.DATETIME())
        op.alter_column(table_name='dag_run', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='dag_run', column_name='end_date', type_=mysql.DATETIME())

        op.alter_column(table_name='import_error', column_name='timestamp', type_=mysql.DATETIME())

        op.alter_column(table_name='job', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='job', column_name='end_date', type_=mysql.DATETIME())
        op.alter_column(table_name='job', column_name='latest_heartbeat', type_=mysql.DATETIME())

        op.alter_column(table_name='known_event', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='known_event', column_name='end_date', type_=mysql.DATETIME())

        op.alter_column(table_name='log', column_name='dttm', type_=mysql.DATETIME())
        op.alter_column(table_name='log', column_name='execution_date', type_=mysql.DATETIME())

        op.alter_column(table_name='sla_miss', column_name='execution_date', type_=mysql.DATETIME(), nullable=False)
        op.alter_column(table_name='sla_miss', column_name='timestamp', type_=mysql.DATETIME())

        op.alter_column(table_name='task_fail', column_name='execution_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_fail', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_fail', column_name='end_date', type_=mysql.DATETIME())

        op.alter_column(table_name='task_instance', column_name='execution_date', type_=mysql.DATETIME(), nullable=False)
        op.alter_column(table_name='task_instance', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_instance', column_name='end_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_instance', column_name='queued_dttm', type_=mysql.DATETIME())

        op.alter_column(table_name='xcom', column_name='timestamp', type_=mysql.DATETIME())
        op.alter_column(table_name='xcom', column_name='execution_date', type_=mysql.DATETIME())