再会,
以下测试有效:
DECLARE @XmlTest TABLE
( ID int,
MyContent Xml
)
declare @aaa XML
set @aaa = '<Root><MyNode Qualifier="0" Code="AAA" Deleted="true">9.99</MyNode><MyNode Qualifier="0" Code="AAA" Deleted="false">10.99</MyNode></Root>'
insert into @XmlTest (ID, MyContent)
values(1,@aaa)
set @aaa = '<Root><MyNode Qualifier="0" Code="BBB" Deleted="false">9.99</MyNode></Root>'
insert into @XmlTest (ID, MyContent)
values(2,@aaa)
select * from @XmlTest
-- 节点选择 [@Code="AAA" and @Deleted="false"] 是唯一的,所以我希望能够在逻辑上“删除它”
UPDATE @XmlTest
SET MyContent.modify('replace value of (/Root/MyNode[@Code="AAA" and @Deleted="false"]/@Deleted)[1] with true()')
WHERE ID = 1
select * from @XmlTest
但是对于 XSD,它不起作用。我有一条错误消息,例如
消息 2234、Niveau 16、État 1、Ligne 19 XQuery [@XmlTest.MyContent.modify()]:运算符“=”不能应用于“”和“xs:string”
这是我的表的架构和新声明
DECLARE @XmlTest TABLE
( ID int,
MyContent Xml(CONTENT TestSchema)
)
DROP XML SCHEMA COLLECTION TestSchema
create xml schema collection TestSchema as
'<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:sql="urn:schemas-microsoft-com:mapping-schema">
<xs:simpleType name="AmountType">
<xs:restriction base="xs:decimal">
<xs:minInclusive value="0"/>
<xs:maxInclusive value="9999999999"/>
<xs:fractionDigits value="2"/>
</xs:restriction>
</xs:simpleType>
<xs:element name="Root" sql:is-constant="1">
<xs:complexType>
<xs:sequence>
<xs:element name="MyNode" maxOccurs="unbounded" minOccurs="1" sql:is-constant="1">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="AmountType">
<xs:attribute name="Qualifier" use="required">
<xs:simpleType>
<xs:restriction base="xs:integer">
<xs:minInclusive value="0"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="Code" use="required">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="15"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="Deleted" use="required">
<xs:simpleType>
<xs:restriction base="xs:boolean">
<xs:pattern value="true"/>
<xs:pattern value="false"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>'
我尝试了这种修改,但如果以同样的方式失败:
<xs:attribute type="xs:boolean" name="Deleted" use="required" />
提前致谢