3ac1660a1a72_extend_distance_table.py 文件源码

def downgrade():
    '''
    downgrade method
    '''
    if context.get_context().dialect.name != 'sqlite':
        drop_column('distances', 'packet_loss')
        drop_column('distances', 'latency')
        drop_column('distances', 'mbps_file')
        drop_column('distances', 'mbps_link')
        drop_column('distances', 'queued_total')
        drop_column('distances', 'done_1h')
        drop_column('distances', 'done_6h')