数据库错误没有这样的表django

Posted 2023-02-24

【中文标题】数据库错误没有这样的表django

【英文标题】：database error no such table django

【发布时间】：2013-07-13 04:11:04

【问题描述】：

我在 django 项目 'cc' 中制作了一个新应用 'api'。

我有一个远程数据库“launchg”，我使用 Legacies 将它与 Django 集成，并使用 python manage.py inspectdb > models.py 生成了一个 models.py 文件。

接下来将生成的models.py文件替换为api应用中的models.py文件。

每当我尝试向该数据库发起查询时database error:no such table 例如：-WebQuery.objects.all()，它会抛出一个错误，指出database error: no such table : web_query

这是我的 models.py 文件

    # This is an auto-generated Django model module.
    # You'll have to do the following manually to clean this up:
    #     * Rearrange models' order  
    #     * Make sure each model has one field with primary_key=True
    # Feel free to rename the models, but don't rename db_table values or field names.
    #
    # Also note: You'll have to insert the output of 'django-admin.py sqlcustom [appname]'
    # into your database.
    from __future__ import unicode_literals

    from django.db import models  

    class Area(models.Model):
        area_id = models.BigIntegerField(primary_key=True)
        area_name = models.CharField(max_length=50L)
        class Meta:
            db_table = 'area'

    class Business2(models.Model):
        business_id = models.BigIntegerField(primary_key=True)
        b_name = models.CharField(max_length=50L)
        b_phone = models.CharField(max_length=50L)
        b_add = models.CharField(max_length=1000L)
        area_id = models.CharField(max_length=50L)
        categories = models.CharField(max_length=1000L)
        rating = models.IntegerField()
        latitude = models.CharField(max_length=255L)
        longitude = models.CharField(max_length=255L)
        class Meta:
            db_table = 'business2'

    class BusinessReply(models.Model):
        msg_id = models.BigIntegerField(primary_key=True)
        conversation_id = models.BigIntegerField()
        business_id = models.BigIntegerField()
        query_id = models.BigIntegerField()
        username = models.CharField(max_length=50L)
        message = models.CharField(max_length=500L)
        date_time = models.DateTimeField()
        class Meta:
            db_table = 'business_reply'

    class Businessnew(models.Model):
        business_id = models.BigIntegerField(primary_key=True)
        b_name = models.CharField(max_length=50L)
        b_phone = models.CharField(max_length=50L)
        b_add = models.CharField(max_length=1000L)
        area_id = models.CharField(max_length=50L)
        categories = models.CharField(max_length=1000L)
        rating = models.IntegerField()
        latitude = models.CharField(max_length=255L)
        longitude = models.CharField(max_length=255L)
        home_delivery = models.IntegerField(db_column='Home Delivery') # Field name made     lowercase. Field renamed to remove unsuitable characters.
        credit_card_facility = models.IntegerField(db_column='Credit Card facility') # Field name made lowercase. Field renamed to remove unsuitable characters.
        menu_available = models.IntegerField(db_column='Menu Available') # Field name made lowercase. Field renamed to remove unsuitable characters.
    bar_available = models.IntegerField(db_column='Bar Available') # Field name made lowercase. Field renamed to remove unsuitable characters.
        dine_in = models.IntegerField(db_column='Dine In') # Field name made lowercase. Field renamed to remove unsuitable characters.
        pure_vegetarian = models.IntegerField(db_column='Pure Vegetarian') # Field name made lowercase. Field renamed to remove unsuitable characters.
        cost = models.CharField(max_length=255L, db_column='Cost') # Field name made lowercase.
        timings = models.CharField(max_length=255L, db_column='Timings') # Field name made lowercase.
        check = models.IntegerField()
        url = models.CharField(max_length=500L)
        class Meta:
            db_table = 'businessnew'

     class BusinessnewBackup(models.Model):
         business_id = models.BigIntegerField(primary_key=True)
         b_name = models.CharField(max_length=50L)
    b_phone = models.CharField(max_length=50L)
    b_add = models.CharField(max_length=1000L)
    area_id = models.CharField(max_length=50L)
    categories = models.CharField(max_length=1000L)
    rating = models.IntegerField()
    latitude = models.CharField(max_length=255L)
    longitude = models.CharField(max_length=255L)
    home_delivery = models.IntegerField(db_column='Home Delivery') # Field name made lowercase. Field renamed to remove unsuitable characters.
    credit_card_facility = models.IntegerField(db_column='Credit Card facility') # Field name made lowercase. Field renamed to remove unsuitable characters.
    menu_available = models.IntegerField(db_column='Menu Available') # Field name made lowercase. Field renamed to remove unsuitable characters.
    bar_available = models.IntegerField(db_column='Bar Available') # Field name made lowercase. Field renamed to remove unsuitable characters.
    dine_in = models.IntegerField(db_column='Dine In') # Field name made lowercase. Field renamed to remove unsuitable characters.
    pure_vegetarian = models.IntegerField(db_column='Pure Vegetarian') # Field name made lowercase. Field renamed to remove unsuitable characters.
    cost = models.CharField(max_length=255L, db_column='Cost') # Field name made lowercase.
    timings = models.CharField(max_length=255L, db_column='Timings') # Field name made lowercase.
    check = models.IntegerField()
    class Meta:
        db_table = 'businessnew_backup'

class BusinessnewBackup1(models.Model):
    business_id = models.BigIntegerField(primary_key=True)
    b_name = models.CharField(max_length=50L)
    b_phone = models.CharField(max_length=50L)
    b_add = models.CharField(max_length=1000L)
    area_id = models.CharField(max_length=50L)
    categories = models.CharField(max_length=1000L)
    rating = models.IntegerField()
    latitude = models.CharField(max_length=255L)
    longitude = models.CharField(max_length=255L)
    home_delivery = models.IntegerField(db_column='Home Delivery') # Field name made lowercase. Field renamed to remove unsuitable characters.
    credit_card_facility = models.IntegerField(db_column='Credit Card facility') # Field name made lowercase. Field renamed to remove unsuitable characters.
    menu_available = models.IntegerField(db_column='Menu Available') # Field name made lowercase. Field renamed to remove unsuitable characters.
    bar_available = models.IntegerField(db_column='Bar Available') # Field name made lowercase. Field renamed to remove unsuitable characters.
    dine_in = models.IntegerField(db_column='Dine In') # Field name made lowercase. Field renamed to remove unsuitable characters.
    pure_vegetarian = models.IntegerField(db_column='Pure Vegetarian') # Field name made lowercase. Field renamed to remove unsuitable characters.
    cost = models.CharField(max_length=255L, db_column='Cost') # Field name made lowercase.
    timings = models.CharField(max_length=255L, db_column='Timings') # Field name made lowercase.
    check = models.IntegerField()
    class Meta:
        db_table = 'businessnew_backup1'

class BusinessnewBackup2(models.Model):
    business_id = models.BigIntegerField(primary_key=True)
    b_name = models.CharField(max_length=50L)
    b_phone = models.CharField(max_length=50L)
    b_add = models.CharField(max_length=1000L)
    area_id = models.CharField(max_length=50L)
    categories = models.CharField(max_length=1000L)
    rating = models.IntegerField()
    latitude = models.CharField(max_length=255L)
    longitude = models.CharField(max_length=255L)
    home_delivery = models.IntegerField(db_column='Home Delivery') # Field name made lowercase. Field renamed to remove unsuitable characters.
    credit_card_facility = models.IntegerField(db_column='Credit Card facility') # Field name made lowercase. Field renamed to remove unsuitable characters.
    menu_available = models.IntegerField(db_column='Menu Available') # Field name made lowercase. Field renamed to remove unsuitable characters.
    bar_available = models.IntegerField(db_column='Bar Available') # Field name made lowercase. Field renamed to remove unsuitable characters.
    dine_in = models.IntegerField(db_column='Dine In') # Field name made lowercase. Field renamed to remove unsuitable characters.
    pure_vegetarian = models.IntegerField(db_column='Pure Vegetarian') # Field name made lowercase. Field renamed to remove unsuitable characters.
    cost = models.CharField(max_length=255L, db_column='Cost') # Field name made lowercase.
    timings = models.CharField(max_length=255L, db_column='Timings') # Field name made lowercase.
    check = models.IntegerField()
    class Meta:
        db_table = 'businessnew_backup2'

class Businessowners(models.Model):
    b_phone = models.CharField(max_length=50L)
    b_id = models.IntegerField()
    userid = models.IntegerField(primary_key=True, db_column='UserID') # Field name made lowercase.
    firstname = models.CharField(max_length=100L)
    lastname = models.CharField(max_length=100L)
    email = models.CharField(max_length=150L)
    password = models.CharField(max_length=32L, db_column='Password') # Field name made lowercase.
    b_name = models.CharField(max_length=100L)
    b_address = models.CharField(max_length=255L)
    class Meta:
        db_table = 'businessowners'

class Categories(models.Model):
    cat = models.CharField(max_length=255L)
    syn = models.CharField(max_length=100L)
    class Meta:
        db_table = 'categories'

class CiSessions(models.Model):
    session_id = models.CharField(max_length=40L, primary_key=True)
    ip_address = models.CharField(max_length=45L)
    user_agent = models.CharField(max_length=120L)
    last_activity = models.IntegerField()
    user_data = models.TextField()
    class Meta:
        db_table = 'ci_sessions'

class Query(models.Model):
    query_id = models.BigIntegerField(primary_key=True)
    conversation_id = models.BigIntegerField()
    gcm_id = models.CharField(max_length=1000L)
    user_id = models.BigIntegerField()
    what = models.CharField(max_length=20L)
    where = models.CharField(max_length=500L)
    message = models.CharField(max_length=200L)
    date_time = models.DateTimeField()
    class Meta:
        db_table = 'query'

class QueryBusiness(models.Model):
    business_id = models.CharField(max_length=10L)
    query_id = models.BigIntegerField()
    date_time = models.DateTimeField()
    class Meta:
        db_table = 'query_business'

class TzMembers(models.Model):
    id = models.IntegerField(primary_key=True)
    usr = models.CharField(max_length=32L, unique=True)
    pass_field = models.CharField(max_length=32L, db_column='pass') # Field renamed because it was a Python reserved word.
    email = models.CharField(max_length=255L)
    regip = models.CharField(max_length=15L, db_column='regIP') # Field name made lowercase.
    dt = models.DateTimeField()
    class Meta:
        db_table = 'tz_members'

class Users(models.Model):
    user_id = models.BigIntegerField(primary_key=True)
    username = models.CharField(max_length=20L)
    fb_token = models.CharField(max_length=1000L)
    email = models.CharField(max_length=50L)
    facebook = models.CharField(max_length=50L)
    fb_likes = models.TextField()
    twitter = models.CharField(max_length=50L)
    gmail = models.CharField(max_length=50L)
    gcm_id = models.CharField(max_length=1000L)
    date_time = models.DateTimeField()
    last_login = models.DateTimeField()
    last_push = models.DateTimeField()
    class Meta:
        db_table = 'users'

class WebQuery(models.Model):
    query_id = models.BigIntegerField(unique=True)
    conversation_id = models.CharField(max_length=50L)
    u_id = models.CharField(max_length=50L)
    u_query = models.CharField(max_length=500L)
    sent_to = models.CharField(max_length=500L)
    date_time = models.DateTimeField()
    is_reply = models.IntegerField()
    is_responded = models.IntegerField()
    from_gingr = models.IntegerField()
    diff = models.IntegerField()
    class Meta:
        db_table = 'web_query'

class WebReply(models.Model):
    reply_id = models.IntegerField(primary_key=True)
    query_id = models.BigIntegerField()
    conversation_id = models.CharField(max_length=50L)
    b_id = models.CharField(max_length=20L)
    u_query = models.CharField(max_length=500L)
    user_id = models.CharField(max_length=20L)
    date_time = models.DateTimeField()
    diff = models.IntegerField()
    class Meta:
        db_table = 'web_reply'

class WebUsers(models.Model):
    user_id = models.BigIntegerField(primary_key=True)
    username = models.CharField(max_length=20L)
    fb_token = models.CharField(max_length=1000L)
    email = models.CharField(max_length=50L)
    facebook = models.CharField(max_length=50L)
    fb_likes = models.TextField()
    twitter = models.CharField(max_length=50L)
    gmail = models.CharField(max_length=50L)
    gcm_id = models.CharField(max_length=1000L)
    date_time = models.DateTimeField()
    last_login = models.DateTimeField()
    class Meta:
        db_table = 'web_users'

此外，当我输入命令 manage.py sql api 时，它会显示所有表格。这是什么？？？

请帮忙！！！

【问题讨论】：

您好，此数据库错误已解决。现在，当我发起查询 Users.objects.all() 时，它会显示一个空列表，尽管数据存在于数据库中。对此有任何想法。

【参考方案1】：

主要区别在于触发manage.py sql myapphere 将显示用于为您的数据库创建架构的查询，而myapp.objects.all() 的输出将仅返回该数据库中的条目列表。

例如，如果您有一个文章列表，manage.py sql 命令将显示 myapp properties，而 myapp.objects.all() 将显示 myapp 的实例 在数据库中。

要进一步推断您的问题，请尝试打开您的数据库客户端并确保列名与您的模型中描述的名称相匹配。如果它们不匹配，您可能需要删除表并重新同步您的数据库（我肯定有这个问题）。