sqloptions:sqlSession 标头元素
当 sqloptions:sqlSession 选项包括 SOAP 标头并显示为 SOAP 标头时，该选项可使客户端控制请求的会话。
标头由一个元素组成，称为**“sqloptions:sqlSession”。该元素有五个可选属性：initiate、terminate、sessionId、timeout 和transactionDescriptor**。有关各属性的用法和行为的详细信息，请参阅使用 SOAP 会话。
在一个请求或响应中，只能有一个 sqloptions:sqlSession 选项实例。多个选项实例将会生成错误。
下面是 sqloptions:sqlSession 选项的架构片断：
<xs:element name="sqlSession form="qualified">
<xs:annotation>
<xs:documentation>
SQL Server SOAP Session
</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:attribute
name="initiate"
default="false"
type="xs:boolean"
form="unqualified">
<xs:annotation>
<xs:documentation>
TRUE to request to start a new session
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute
name="terminate"
default="false"
type="xs:boolean"
form="unqualified">
<xs:annotation>
<xs:documentation>
TRUE to request to terminate an existing session
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="sessionId" type="xs:base64Binary" form="unqualified">
<xs:annotation>
<xs:documentation>
The ID of a session
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="timeout" type="xs:int" form="unqualified">
<xs:annotation>
<xs:documentation>
The timeout in seconds before the session expires.
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute
name="transactionDescriptor"
type="xs:base64Binary"
form="unqualified">
<xs:annotation>
<xs:documentation>
The descriptor of a transaction to enlist to.
</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:complexType>
</xs:element>