Unable to modify a XML node which is a SimpleType using a Typed XML field.

Question

Hello,
I have an XSD schema that uses SimpleTypes.  When I attempt to modify a node in an Schema typed XML field, which has a schema using simpletypes, I receive the error:  XQuery [modify()]: The value is of type "xs:string", which is not a
subtype of the expected type "<anonymous>"
To reproduce the problem use the following information:
SCHEMA:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:ns1="http://testschema" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:vc="http://www.w3.org/2007/XMLSchema-versioning" targetNamespace="http://testschema" elementFormDefault="qualified" attributeFormDefault="unqualified" vc:minVersion="1.1">
<xs:element name="Test">
<xs:annotation>
<xs:documentation>Comment describing your root element</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:element name="SAPCode">
<xs:annotation>
<xs:documentation>Customer Number for Delivery Organization</xs:documentation>
</xs:annotation>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:length value="10"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="OrganizationName">
<xs:annotation>
<xs:documentation>Name of Organization</xs:documentation>
</xs:annotation>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="100"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="AttentionTo" minOccurs="0">
<xs:annotation>
<xs:documentation>Attention to Recepient for the delivery</xs:documentation>
</xs:annotation>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="150" fixed="false"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Address1">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="150"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Address2" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="150"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Address3" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="150"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="City">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="100"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="StateProvince">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="100"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="PostalCode">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="20"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Country">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:length value="2"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Phone" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="50"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="EmailAddress" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="200"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
The T-SQL That produces the error:
DECLARE
@vx_Test xml (CONTENT [dbo].[Test]),
@vs_ShipToAttentionTo NVARCHAR(50)
SET
@vx_Test = N'<ns0:Test xmlns:ns0="http://testschema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ns0:SAPCode>1234567890</ns0:SAPCode>
<ns0:OrganizationName>Test Org</ns0:OrganizationName>
<ns0:AttentionTo>Test Person</ns0:AttentionTo>
<ns0:Address1>123 Main Street</ns0:Address1>
<ns0:City>Test City</ns0:City>
<ns0:StateProvince>IL</ns0:StateProvince>
<ns0:PostalCode>12345</ns0:PostalCode>
<ns0:Country>US</ns0:Country>
</ns0:Test>'
SET
@vs_ShipToAttentionTo = 'New Attention To'
SET @vx_Test.modify('declare namespace ns0="http://testschema";
replace value of (/ns0:Test[1]/ns0:AttentionTo) with sql:variable("@vs_ShipToAttentionTo")');
-- This would be how I would reference it if I was modifiying the XML in a typed XML column in a table.
WITH XMLNAMESPACES('http://testschema' AS ns0)
UPDATE TestItems
SET TestXML.modify('replace value of (/ns0:Test[1]/ns0:AttentionTo) with sql:variable("@vs_ShipToAttentionTo")')
SELECT @vx_Test
How can I make this work.  In this example I am using a typed XML variable, but I really want to do this in a table update.
Thanks,
Kent

Answer 1

Try the change below.  What I did was to create a named simple type for the AttentionTo node.  Here is my understanding (based on this working).  Because you have a simpleType the node cannot accept just any string, it has to be a string of
the type in the simpleType.  That simpleType has no name (thus anonymous). 
What I did was to create a named simpleType and used that simpleType as the type for the AttentionTo element.  Then in my XQuery, I cast the value to the name of that type (AttentionToType in my example).
CREATE xml schema collection Test as '<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:ns1="http://testschema" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:vc="http://www.w3.org/2007/XMLSchema-versioning" targetNamespace="http://testschema" elementFormDefault="qualified" attributeFormDefault="unqualified" vc:minVersion="1.1">
<xs:element name="Test">
<xs:annotation>
<xs:documentation>Comment describing your root element</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:element name="SAPCode">
<xs:annotation>
<xs:documentation>Customer Number for Delivery Organization</xs:documentation>
</xs:annotation>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:length value="10"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="OrganizationName">
<xs:annotation>
<xs:documentation>Name of Organization</xs:documentation>
</xs:annotation>
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="100"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="AttentionTo" minOccurs="0" type="ns1:AttentionToType">
<xs:annotation>
<xs:documentation>Attention to Recepient for the delivery</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="Address1">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="150"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Address2" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="150"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Address3" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="150"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="City">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="100"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="StateProvince">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="100"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="PostalCode">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="20"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Country">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:length value="2"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Phone" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="50"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="EmailAddress" minOccurs="0">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:maxLength value="200"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:simpleType name="AttentionToType">
<xs:restriction base="xs:string">
<xs:maxLength value="150" fixed="false"/>
</xs:restriction>
</xs:simpleType>
</xs:schema>';
go
DECLARE
@vx_Test xml (CONTENT dbo.Test),
@vs_ShipToAttentionTo nvarchar(50)
SET
@vx_Test = N'<ns0:Test xmlns:ns0="http://testschema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ns0:SAPCode>1234567890</ns0:SAPCode>
<ns0:OrganizationName>Test Org</ns0:OrganizationName>
<ns0:AttentionTo>Test Person</ns0:AttentionTo>
<ns0:Address1>123 Main Street</ns0:Address1>
<ns0:City>Test City</ns0:City>
<ns0:StateProvince>IL</ns0:StateProvince>
<ns0:PostalCode>12345</ns0:PostalCode>
<ns0:Country>US</ns0:Country>
</ns0:Test>'
SET
@vs_ShipToAttentionTo = 'New Attention To'
SET @vx_Test.modify('declare namespace ns0="http://testschema";
replace value of (/ns0:Test[1]/ns0:AttentionTo) with sql:variable("@vs_ShipToAttentionTo") cast as ns0:AttentionToType?');
-- This would be how I would reference it if I was modifiying the XML in a typed XML column in a table.
WITH XMLNAMESPACES('http://testschema' AS ns0)
UPDATE TestItems
SET TestXML.modify('replace value of (/ns0:Test[1]/ns0:AttentionTo)
with sql:variable("@vs_ShipToAttentionTo")')
SELECT @vx_Test
Russel Loski, MCT, MCSE Data Platform/Business Intelligence. Twitter: @sqlmovers; blog: www.sqlmovers.com