sqloptions:environmentChangeNotifications 标头元素
后续版本的 Microsoft SQL Server 将删除该功能。 请避免在新的开发工作中使用该功能，并着手修改当前还在使用该功能的应用程序。
sqloptions:environmentChangeNotifications SOAP 标头使客户端能够指定其希望接收的环境变化通知，例如：
<SOAP-ENV:Header
xmlns:SOAP-ENV="https://schemas.xmlsoap.org/soap/envelope/"
xmlns:sqloptions="https://schemas.microsoft.com/sqlserver/2004/SOAP/Options">
<sqloptions:environmentChangeNotifications SOAP-ENV:mustUnderstand="1" databaseChange="true" | "false" languageChange="true" | "false" transactionBoundary="true" | "false" />
</SOAP-ENV:Header>
sqloptions:environmentChangeNotifications 选项显示为 SOAP 标头。该标头由一个名为 sqloptions:environmentChangeNotifications 的元素组成。该元素具有四个可选属性：databaseChange、languageChange、partnerChange 和 transactionBoundary。每个属性都是一个布尔值。四者的默认值都是 false。这些可选属性可指定客户端希望接收的通知。
每个请求中只能出现一个 sqloptions:environmentChangeNotifications 选项的实例。该选项无法在响应中显示。如果出现该选项的多个实例将产生错误，就像 sqloptions:environmentChangeNotifications 节点中存在任何内容一样。
如果使用 SOAP 会话，则必须在与 sqloptions:sqlsession initiate 属性相同的请求中显示此选项。如果在任何带有 sqloptions:sqlSession 标头但不包含 initiate 属性的请求中显示此选项，则将生成错误。
以下是 sqloptions:environmentChangeNotifications 选项的架构代码段：
<xs:element name="environmentChangeNotifications" form="qualified">
<xs:annotation>
<xs:documentation>
Receive environment change notifications.
</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:attribute
name="databaseChange"
default="false"
type="xs:boolean"
form="unqualified">
<xs:annotation>
<xs:documentation>
Receive notifications of database changes.
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute
name="languageChange"
default="false"
type="xs:boolean"
form="unqualified">
<xs:annotation>
<xs:documentation>
Receive notifications of language changes.
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute
name="transactionBoundary"
default="false"
type="xs:boolean"
form="unqualified">
<xs:annotation>
<xs:documentation>
Receive notifications of transaction boundaries.
</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="partnerChange" default="false" type="xsd:boolean" form="unqualified">
<xs:annotation>
<xs:documentation>Receive notifications of partner changes.</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:complexType>
</xs:element>
示例
以下是在 SOAP 请求和响应消息中使用 sqloptions:environmentChangeNotifications 标头的示例。
请求
POST !HTTPURL! HTTP/1.1
Content-Type: text/xml
Host: !SERVERNAME!
SOAPAction: "https://schemas.microsoft.com/sqlserver/2004/SOAPsqlbatch"
<SOAP-ENV:Envelope xmlns:SOAP-ENV="https://schemas.xmlsoap.org/soap/envelope/"
xmlns:sql="https://schemas.microsoft.com/sqlserver/2004/SOAP"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:sqlparam="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlParameter"
xmlns:sqlsoaptypes="https://schemas.microsoft.com/sqlserver/2004/SOAP/types"
xmlns:sqloptions="https://schemas.microsoft.com/sqlserver/2004/SOAP/Options"
>
<SOAP-ENV:Header>
<sqloptions:environmentChangeNotifications SOAP-ENV:mustUnderstand="1" databaseChange="true" languageChange="true" transactionBoundary="true" />
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<sql:sqlbatch>
<sql:BatchCommands>
SET LANGUAGE Italian
SELECT @@LANGUAGE as lang
USE AdventureWorks
BEGIN TRANSACTION testTransaction
SELECT @@LANGUAGE as language
COMMIT TRANSACTION testTransaction
</sql:BatchCommands>
</sql:sqlbatch>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
响应
<Response>
<Version>HTTP/1.1</Version>
<Status>200</Status>
<StatusText>OK</StatusText>
<Headers>
<Content-Type>text/xml; charset=utf-8</Content-Type>
<Date>exists</Date>
<Server>Microsoft-SQL/9.0 Microsoft-HTTPAPI/1.0</Server>
<Transfer-Encoding>chunked</Transfer-Encoding>
</Headers>
<Body>
<SOAP-ENV:Envelope xml:space="preserve"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:SOAP-ENV="https://schemas.xmlsoap.org/soap/envelope/"
xmlns:sql="https://schemas.microsoft.com/sqlserver/2004/SOAP"
xmlns:sqlsoaptypes="https://schemas.microsoft.com/sqlserver/2004/SOAP/types"
xmlns:sqlrowcount="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlRowCount"
xmlns:sqlmessage="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlMessage"
xmlns:sqlresultstream="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlResultStream"
xmlns:sqltransaction="https://schemas.microsoft.com/sqlserver/2004/SOAP/types/SqlTransaction"
xmlns:sqltypes="https://schemas.microsoft.com/sqlserver/2004/sqltypes">
<SOAP-ENV:Body>
<sql:sqlbatchResponse>
<sql:sqlbatchResult>
<sqlresultstream:SqlMessage xsi:type="sqlmessage:SqlMessage">
<sqlmessage:Class>0</sqlmessage:Class>
<sqlmessage:LineNumber>0</sqlmessage:LineNumber>
<sqlmessage:Message>Changed language setting to Italiano.</sqlmessage:Message>
<sqlmessage:Number>5703</sqlmessage:Number>
<sqlmessage:Source>Microsoft-SQL/9.0</sqlmessage:Source>
<sqlmessage:State>1</sqlmessage:State>
</sqlresultstream:SqlMessage>
<sqlresultstream:SqlRowSet xsi:type="sqlsoaptypes:SqlRowSet">
<diffgr:diffgram xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1">
<SqlRowSet1 xmlns="urn:schemas-microsoft-com:sql:SqlRowSet1">
<row>
<lang>Italiano</lang>
</row>
</SqlRowSet1>
</diffgr:diffgram>
</sqlresultstream:SqlRowSet>
<sqlresultstream:SqlRowCount xsi:type="sqlrowcount:SqlRowCount">
<sqlrowcount:Count>1</sqlrowcount:Count>
</sqlresultstream:SqlRowCount>
<sqlresultstream:SqlMessage xsi:type="sqlmessage:SqlMessage">
<sqlmessage:Class>0</sqlmessage:Class>
<sqlmessage:LineNumber>0</sqlmessage:LineNumber>
<sqlmessage:Message>Changed database context to 'Northwind'.</sqlmessage:Message>
<sqlmessage:Number>5701</sqlmessage:Number>
<sqlmessage:Source>Microsoft-SQL/9.0</sqlmessage:Source>
<sqlmessage:State>1</sqlmessage:State>
</sqlresultstream:SqlMessage>
<sqlresultstream:SqlTransaction xsi:type="sqltransaction:SqlTransaction">
<sqltransaction:Descriptor>asdf</sqltransaction:Descriptor>
<sqltransaction:Type>Begin</sqltransaction:Type>
</sqlresultstream:SqlTransaction>
<sqlresultstream:SqlRowSet xsi:type="sqlsoaptypes:SqlRowSet">
<diffgr:diffgram xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1">
<SqlRowSet2 xmlns="urn:schemas-microsoft-com:sql:SqlRowSet2">
<row>
<language>Italiano</language>
</row>
</SqlRowSet2>
</diffgr:diffgram>
</sqlresultstream:SqlRowSet>
<sqlresultstream:SqlRowCount xsi:type="sqlrowcount:SqlRowCount">
<sqlrowcount:Count>1</sqlrowcount:Count>
</sqlresultstream:SqlRowCount>
<sqlresultstream:SqlTransaction xsi:type="sqltransaction:SqlTransaction">
<sqltransaction:Descriptor>asdf</sqltransaction:Descriptor>
<sqltransaction:Type>Commit</sqltransaction:Type>
</sqlresultstream:SqlTransaction>
</sql:sqlbatchResult>
</sql:sqlbatchResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
</Body>
</Response>