Question

protected virtual void ConfigureServiceContainer()
{
    this.ServiceContainer.RegisterInstance<IServiceContainer>(this.ServiceContainer);
    this.ServiceContainer.RegisterInstance(this.Logger);
    this.ServiceContainer.RegisterInstance(this.ModuleCatalog);

    if (!this.useDefaultConfiguration)
        return;

    this.ServiceContainer.Register<IServiceLocator, LightInjectServiceLocatorAdapter>();
    this.ServiceContainer.Register<IModuleInitializer, ModuleInitializer>();
    this.ServiceContainer.Register<IModuleManager, ModuleManager>();

    this.ServiceContainer.Register<RegionAdapterMappings, RegionAdapterMappings>();

    // The following 4 registrations are not in the NinjectBootstrapper
    this.ServiceContainer.Register<SelectorRegionAdapter, SelectorRegionAdapter>();
    this.ServiceContainer.Register<ItemsControlRegionAdapter, ItemsControlRegionAdapter>();
    this.ServiceContainer.Register<ContentControlRegionAdapter, ContentControlRegionAdapter>();
    this.ServiceContainer.Register<DelayedRegionCreationBehavior, DelayedRegionCreationBehavior>();

    this.ServiceContainer.Register<IRegionManager, RegionManager>();
    this.ServiceContainer.Register<IEventAggregator, EventAggregator>();
    this.ServiceContainer.Register<IRegionViewRegistry, RegionViewRegistry>();
    this.ServiceContainer.Register<IRegionBehaviorFactory, RegionBehaviorFactory>();
    this.ServiceContainer.Register<IRegionNavigationJournalEntry, RegionNavigationJournalEntry>();
    this.ServiceContainer.Register<IRegionNavigationJournal, RegionNavigationJournal>();
    this.ServiceContainer.Register<IRegionNavigationService, RegionNavigationService>();
    this.ServiceContainer.Register<IRegionNavigationContentLoader, RegionNavigationContentLoader>();
}

我似乎无法获得FOREIGN密钥来处理此声明。我一直收到错误

错误1064（42000）：您的SQL语法有错误;检查手册，对应右边的MySQL服务器版本要使用的语法＆＃39; FOREIGN KEY（user_id）REF ERENCES user（id）） AUTO_INCREMENT = 1＆＃39;在第6行

Answer 1

在主键后添加逗号：

CREATE TABLE comments (
  id INT(3) UNSIGNED NOT NULL AUTO_INCREMENT,
  body TEXT DEFAULT NULL,
  user_id INT(7) UNSIGNED NOT NULL,
  PRIMARY KEY (id),
  FOREIGN KEY (user_id) REFERENCES user(id)
) AUTO_INCREMENT = 1;

Answer 2

解决方法是在PRIMARY KEY之后添加一个逗号并将REFERENCES更改为db.table（column）

CREATE TABLE comments ( id INT(3) UNSIGNED NOT NULL AUTO_INCREMENT, body TEXT DEFAULT NULL, user_id INT(7) UNSIGNED NOT NULL, PRIMARY KEY (id), FOREIGN KEY (user_id) REFERENCES blog.users(id) ) AUTO_INCREMENT = 1;

mysql外键引用语法错误

2 个答案: