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如果连的是mysql数据库,在表django_migrations中删除name为你建立的app名字的记录,
类似
delete from django_migrations where name='your app name';
然后重新run
python manage.py makemigrations
python manange.py migrate
原先已经存在的建表记录导致没能创建表成功,发现很多情况创建表不成功,或者没有及时得到更新,都会出现问题
注意:在app下的migrations文件夹不要删除,以及下面的__ini__.py初始文件
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