问题:

Can anyone tell if there is a difference between

>manage.py flush  # or reset

and

>manage.py sqlclear appname | python manage.py dbshell
>manage.py syncdb

回答1:

flush will truncate (delete data)

sqlclear will drop (delete table, thus data too)

=> if you have structural modifications in your db, you have to do sqlclear (but better use south)

Update:

South has been deprecated.

From Django 1.7 upwards, migrations are built into the core of Django. If you are running a previous version, you can use South.

回答2:

Official docs for

flush and sqlclear

Flush carries out the SQL Drops on the entire db, sqlflush only prints out the SQL that flush would actual run (again on the entire db). sqlclear prints out SQL Drops for a particular app or apps. Both flush and sqlflush/dbshell/syncdb will install fixtures.