在SQl 2005 For XMl 简单查询(Raw,Auto,Path模式)(1)里我们说了关于Path,Raw和Auto模式的用法,其实里面不仅仅 是这些简单的操作,还有一些其它的特性,比如说Type或OpenXml方法,sp_xml_preparedocument存储过程 等这些增加的东东,我们来一个一个的看吧, 第一个Type关键字,Type大家都 知道 英文意思是类
type="sqltypes:int" use="required" /> <xsd:attribute name="Name" use="required"> <xsd:simpleType sqltypes:sqlTypeAlias="[AdventureWorks].[dbo].[Name]"> <xsd:restriction base="sqltypes:nvarchar" sqltypes:localeId="1033" sqltypes:sqlCompareOptions="IgnoreCase IgnoreKanaType IgnoreWidth" ...
DbRawSqlQuery DbRawSqlQuery 方法 AsStreaming Equals ForEachAsync GetEnumerator GetHashCode GetType ToListAsync ToString 显式接口实现 DbRawSqlQuery<TElement> DbReferenceEntry DbReferenceEntry<TEntity,TProperty> DbSqlQuery DbSqlQuery<TEntity> DbUpdateConcurrencyException ...
Object-relational mapping (ORM, O/RM, and O/R mapping tool) in computer science is a programming technique for converting data between incompatible type systems using object-oriented programming languages. This creates, in effect, a “virtual object database” that can be used from within the p...
DatabaseFacade上下文的 。 sql String 原始SQL 查询。 parameters Object[] 要分配给参数的值。 返回 IQueryable<TResult> 表示IQueryable<T> 原始SQL 查询的 。 注解 若要将此方法用于数据库提供程序本身不支持的返回类型,请使用 DefaultTypeMapping<TScalar>(Action<TypeMapping...
PDH_LOG_TYPE_SQL A SQL format record PDH_LOG_TYPE_TSV A tab-separated-value format record dwItems Size of theRawBytesdata. RawBytes[1] Binary record. Requirements Udvid tabel RequirementValue Minimum supported clientWindows XP [desktop apps only] ...
public java.lang.ObjecttoJdbc() throws java.sql.SQLException Convert this data object into its default Java object type. Specified by: toJdbcin classDatum Returns: the data value as a byte array. Throws: java.sql.SQLException- if any of the lower layer code throws an exception. ...
public java.lang.Object toJdbc() throws java.sql.SQLExceptionConvert this data object into its default Java object type. Returns: the data value as a byte array. Throws: java.sql.SQLException - if any of the lower layer code throws an exception. Overrides: toJdbc in class Datum...
DbRawSqlQuery<TElement>.ToListAsync 方法 (CancellationToken) 项目 2015/01/13 本文内容 语法 备注 请参阅 [本页针对的是实体框架版本 6。最新版本以“实体框架”NuGet 包的形式提供。有关实体框架的更多信息,请参见msdn.com/data/ef。] 通过异步枚举它从查询创建List<T>。
With that in mind, I think adding __len__ would be a nasty footgun, if you only want the number of rows, you can write a COUNT SQL query, if you want the count and the result, then you should definitely store the result in a list to avoid a second query. Of course we could ...