如果在重新封裝更新用戶表之前,已經更新了數據表,在數據庫中已經有了django相關的依賴表,就會報錯:
django.db.migrations.exceptions.InconsistentMigrationHistory: Migration admin.0001_initial is applied before its dependency users.00 01_initial on database 'default'.

解決方案:
將mysql數據庫里刪除與項目連接的數據庫(本項目的數據庫是gg),然后再重新建立數據庫,然后再在pycharm中migrate
drop database gg; create database gg default character set utf8 collate utf8_general_ci;
