Represents a SQL query for non-entities that is created from a DbContext and is executed using the connection from that context. Instances of this class are obtained from the Database instance. The query is not executed when this object is created; it is
The framework (Prisma (node.js)in the example) We then copy the Prisma raw SQL, optionally pasting also the database schema, and then clickAll done, optimize the query. Note: you can retrieve the database schema by connecting to the database and executing the query that you can copy/pas...
DbRawSqlQuery<TElement>.LongCountAsync 方法 (Func<TElement, Boolean>)發行項 2015/01/12 本文內容 語法 例外狀況 備註 請參閱 [此頁面專屬於 Entity Framework 第 6 版。最新版本可從 'Entity Framework' NuGet 套件取得。如需 Entity Framework 的詳細資訊,請參閱 msdn.com/data/ef。] 非同步傳...
类型:System.Threading.Tasks.Task 表示异步操作的任务。 备注 不支持对同一上下文实例执行多个活动操作。 使用“await”以确保在对此上下文调用另一个方法前完成了所有异步操作。 请参阅 参考 DbRawSqlQuery 类 ForEachAsync 重载 System.Data.Entity.Infrastructure 命名空间...
表示异步操作的任务。任务结果包含查询结果的单个元素。 异常 备注 不支持对同一上下文实例执行多个活动操作。 使用“await”以确保在对此上下文调用另一个方法前完成了所有异步操作。 请参阅 参考 DbRawSqlQuery<TElement> 类 SingleAsync 重载 System.Data.Entity.Infrastructure 命名空间...
Represents a SQL query for non-entities that is created from a DbContext and is executed using the connection from that context. Instances of this class are obtained from the Database instance. The query is not executed when this object is created; it is
'宣告 Public Function AllAsync ( _ predicate As Func(Of TElement, Boolean) _ ) As Task(Of Boolean) '用途 Dim instance As DbRawSqlQuery Dim predicate As Func(Of TElement, Boolean) Dim returnValue As Task(Of Boolean) returnValue = instance.AllAsync(predicate) 參數 predicate 類型:System.Fu...
CountAsync() Asynchronously returns the number of elements in the query. CountAsync(Func<TElement,Boolean>) Asynchronously returns the number of elements in the query that satisfy a condition. CountAsync(CancellationToken) Asynchronously returns the number of elements in the query. CountAsync(Func...
实体的 SQL 查询是使用 SqlQuery(String, Object[]) 创建的。 请参见 DbRawSqlQuery<TElement> 了解此类的泛型版本。 继承层次结构 System.Object System.Data.Entity.Infrastructure.DbRawSqlQuery System.Data.Entity.Infrastructure.DbSqlQuery 命名空间: System.Data.Entity.Infrastructure 程序集: EntityFramework(...
多載清單 展開資料表 名稱描述 ForEachAsync(Action<Object>) 非同步列舉查詢結果,並針對每個項目執行指定動作。 ForEachAsync(Action<Object>, CancellationToken) 非同步列舉查詢結果,並針對每個項目執行指定動作。 靠上 請參閱 參考 DbRawSqlQuery 類別 System.Data.Entity.Infrastructure 命名空間中文...