django.db.utils.OperationalError：（1426，“精度太大 1000

Posted 2023-02-24

【中文标题】django.db.utils.OperationalError：（1426，“精度太大 1000

【英文标题】：django.db.utils.OperationalError: (1426, "Too big precision 1000

【发布时间】：2015-08-16 12:40:35

【问题描述】：

当我尝试在 webfaction 上运行 python2.7 manage.py syncdb 时遇到以下问题。如果我没有提供正确的信息，我深表歉意，因为我对此很陌生。

Creating table carts_cartitem
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/base.py", line 533, in handle
    return self.handle_noargs(**options)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/commands/syncdb.py", line 27, in handle_noargs
    call_command("migrate", **options)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/__init__.py", line 115, in call_command
    return klass.execute(*args, **defaults)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/commands/migrate.py", line 128, in handle
    created_models = self.sync_apps(connection, executor.loader.unmigrated_apps)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/core/management/commands/migrate.py", line 239, in sync_apps
    cursor.execute(statement)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/db/backends/utils.py", line 81, in execute
    return super(CursorDebugWrapper, self).execute(sql, params)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/db/backends/utils.py", line 65, in execute
    return self.cursor.execute(sql, params)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/db/utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/db/backends/utils.py", line 63, in execute
    return self.cursor.execute(sql)
  File "/home/user/webapps/myproject/lib/python2.7/Django-1.7.1-py2.7.egg/django/db/backends/mysql/base.py", line 128, in execute
    return self.cursor.execute(query, args)
  File "/usr/local/lib/python2.7/site-packages/MySQLdb/cursors.py", line 174, in execute
    self.errorhandler(self, exc, value)
  File "/usr/local/lib/python2.7/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
    raise errorclass, errorvalue
django.db.utils.OperationalError: (1426, "Too big precision 1000 specified for column 'line_total'. Maximum is 65.")

【问题讨论】：

错误以及如何修复它就在堆栈跟踪的最后一行。您的模型上的 line_total 字段的属性值超出了范围。

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我仍然不明白这一点，我唯一想到的是我可以让它在 sqlite3 的本地主机上完美运行，但是当我在 webfaction 上尝试使用 mysql 时出现错误。这是否能提供任何线索来说明我哪里出错了？

【参考方案1】：

请原谅我在这里缺乏知识，我似乎已经通过运行 python manage.py migrate --fake 解决了这个问题，现在我不再遇到以前的任何错误。