django数据库迁移步骤

1.新增或者修改model

2.生成迁移文件：python manage.py makemigrations --settings=config.settings.dev ${app_label}  # 假设生成的文件是0001_initial.py

3.查看预计执行的sql：python manage.py sqlmigrate --settings=config.settings.dev ${app_label} 0001_initial #这里可以查看执行的sql是否符合预期

4.执行迁移：python manage.py migrate --settings=config.settings.dev ${app_label} 0001_initial