我在laravel迁移中有5个表，表序列是
- 2017_03_27_121533_create_purchase_solds_table.php
- 2017_03_27_121533_create_purchases_table.php
- 2017_03_27_121533_create_purchase_returns_table.php
- 2017_03_27_121533_create_solds_table.php
- 2017_03_27_121533_create_purchase_sold_returns_table.php
我按1,2,3,4,5的顺序迁移它，现在我想按照5,4,3,2,1的顺序迁移它，那么请帮助我。