I am generating an XML using SQL Server and I need the following name space:
xmlns:ns0="http://www.w3.org/2001/XMLSchema-instance" ns0:noNamespaceSchemaLocation="http://myLink2Schema.xsd"
I am trying to generate it with the following code:
WITH XMLNAMESPACES(
'http://www.w3.org/2001/XMLSchema-instance' as ns0
,'http://myLink2Schema.xsd' as noNamespaceSchemaLocation
)
But the result I get is:
xmlns:noNamespaceSchemaLocation="http://myLink2Schema.xsd" xmlns:ns0="http://www.w3.org/2001/XMLSchema-instance"
If I try to write it like this it does not work:
WITH XMLNAMESPACES(
'http://www.w3.org/2001/XMLSchema-instance' as ns0
,'http://myLink2Schema.xsd' as ns0:noNamespaceSchemaLocation
)
It is like noNamespaceSchemaLocation needs to be a child of ns0.
I know I could treat the XML like a string and manipulate it after the generation but I'd rather do it in the right way.
In what you've specified as a "need" ns0:noNamespaceSchemaLocation="http://myLink2Schema.xsd" is not a namespace definition but an attribute in the ns0 namespace prefix. You output that as part of your SQL query, e.g.:
with xmlnamespaces (
'http://www.w3.org/2001/XMLSchema-instance' as ns0
)
select
'http://myLink2Schema.xsd' as [#ns0:noNamespaceSchemaLocation],
1 as World
for xml path('Hello');
Which outputs:
<Hello xmlns:ns0="http://www.w3.org/2001/XMLSchema-instance" ns0:noNamespaceSchemaLocation="http://myLink2Schema.xsd">
<World>1</World>
</Hello>
Related
I'm querying a table T which has a string column StrXML that has XML text stored in it. Here's an example of the XML stored:
<Sequence mc:Ignorable="sap sads" DisplayName="Post Processing"
sap:VirtualizedContainerService.HintSize="424,318"
mva:VisualBasic.Settings="Assembly references and imported namespaces serialized as XML namespaces"
xmlns="http://schemas.microsoft.com/netfx/2009/xaml/activities"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006
xmlns:mee="clr-namespace:MatX.eRP.Entities;assembly=eRP.Entities"
xmlns:mepa="clr-namespace:MatX.eRP.PostProcessing.Activities;assembly=PostProcessing.Activities"
xmlns:mva="clr-namespace:Microsoft.VisualBasic.Activities;assembly=System.Activities"
xmlns:sads="http://schemas.microsoft.com/netfx/2010/xaml/activities/debugger"
xmlns:sap="http://schemas.microsoft.com/netfx/2009/xaml/activities/presentation"
xmlns:scg="clr-namespace:System.Collections.Generic;assembly=mscorlib"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<sap:WorkflowViewStateService.ViewState>
<scg:Dictionary x:TypeArguments="x:String, x:Object">
<x:Boolean x:Key="IsExpanded">True</x:Boolean>
</scg:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<mepa:BasicOperation Description="Traitement Thermique" DisplayName="HeatTreatment" Guid="82800b59-e181-4a93-b483-7e2cd9b14827" sap:VirtualizedContainerService.HintSize="402,154" Scope="Build">
<mepa:BasicOperation.MeasurementDescriptions>
<scg:List x:TypeArguments="mee:MeasurementDescription" Capacity="0" />
</mepa:BasicOperation.MeasurementDescriptions>
</mepa:BasicOperation>
<mepa:BasicOperation Description="Finition manuelle" DisplayName="Manual Finishing" Guid="cd64be75-6968-47fe-8aac-93a4fdf37892">
<mepa:BasicOperation.MeasurementDescriptions>
<scg:List x:TypeArguments="mee:MeasurementDescription" Capacity="4">
<mee:MeasurementDescription Max="{x:Null}" Min="{x:Null}" Guid="7c1a37f1-f39d-4ed3-8048-6b0a266c70b9" IsRequired="False" Name="MesureMF1" Type="Double" />
<mee:MeasurementDescription Max="{x:Null}" Min="{x:Null}" Guid="a21b0c0d-dfff-4237-9975-4179bcefe7c2" IsRequired="False" Name="MesureMF2" Type="Double" />
</scg:List>
</mepa:BasicOperation.MeasurementDescriptions>
</mepa:BasicOperation>
</Sequence>
In my select request on table T, I want to only show the Description value for which the Guid="82800b59-e181-4a93-b483-7e2cd9b14827".
How can I do that?
In a comment I mentioned already, that one of your namespaces is missing the final ". This is a big problem, if it's not just a copy-and-paste issue... (not well formed)
XML should not be stored in a string column (slow and dangerous!). If you database does not support XML natively the XML should at least be checked.
You did not mention the actual RDBMS, but the XQuery-principles should be the same (however your RDBMS deals with XQuery actually).
The simple approach is this XQuery (fetch any <BasicOperation>, wherever it is placed, and filter for the given GUID)
//*:BasicOperation[#Guid="82800b59-e181-4a93-b483-7e2cd9b14827"]/#Description
With SQL-Server you can try this
SELECT CAST(T.StrXML AS XML).value(N'(//*:BasicOperation[#Guid="82800b59-e181-4a93-b483-7e2cd9b14827"]/#Description)[1]',N'nvarchar(max)')
The more specific (and recommended) approach is this:
declare namespace dflt="http://schemas.microsoft.com/netfx/2009/xaml/activities";
declare namespace mepa="clr-namespace:MatX.eRP.PostProcessing.Activities;assembly=PostProcessing.Activities";
dflt:Sequence/mepa:BasicOperation[#Guid="82800b59-e181-4a93-b483-7e2cd9b14827"]/#Description
Again - with SQL-Server - you might try this:
SELECT CAST(T.StrXML AS XML).value(N'declare namespace dflt="http://schemas.microsoft.com/netfx/2009/xaml/activities";
declare namespace mepa="clr-namespace:MatX.eRP.PostProcessing.Activities;assembly=PostProcessing.Activities";
(dflt:Sequence/mepa:BasicOperation[#Guid="82800b59-e181-4a93-b483-7e2cd9b14827"]/#Description)[1]',N'nvarchar(max)')
If the GUID-value is variable SQL-Server would allow you to pass the value in from a variable declared outside. Read about sql:variable() and sql:column().
UPDATE
You can use lower-case() to get a secure comparison:
DECLARE #xml XML=
'<root>
<a guid="82800b59-e181-4a93-b483-7e2cd9b14827" />
<a guid="82800B59-E181-4A93-B483-7E2CD9B14827" />
</root>';
DECLARE #guid UNIQUEIDENTIFIER='82800B59-E181-4A93-B483-7E2CD9B14827';
SELECT #xml.query(N'/root/a[lower-case(#guid)=lower-case(sql:variable("#guid"))]')
Try something like this, assuming this is for SQL Server:
;WITH XMLNAMESPACES(DEFAULT 'http://schemas.microsoft.com/netfx/2009/xaml/activities',
'clr-namespace:MatX.eRP.PostProcessing.Activities;assembly=PostProcessing.Activities' AS mepa)
SELECT
T.X.value('#Description', 'varchar(100)') AS JobTitle
FROM
#XTable
CROSS APPLY
XmlData.nodes('/Sequence/mepa:BasicOperation') AS T(X)
WHERE
T.X.value('#Guid','varchar(50)') = '82800b59-e181-4a93-b483-7e2cd9b14827'
I try to create a XML with sqlserver that must contain multiple namespaces. The XML should look something like this:
<ns1:Message xmlns:ns1="http://Something/A"
xmlns:ns2="http://Something/B"
xmlns:ns3="http://Something/C">
<ns1:A>
<ns1:A1>201608111003201</ns1:A1>
<ns1:A2>Some text</ns1:A2>
<ns1:A3>More text</ns1:A3>
</ns1:A>
<ns2:B>
<ns2:B1>123456788</ns2:B1>
<ns2:B2>Even more text</B2>
</ns2:B>
<ns3:C>
<ns3:C1>E232323</ns3:C1>
<ns3:C2>P</ns3:C2>
</ns3:C>
</ns1:Message
My query does look something like this now with only one namespace.
WITH XMLNAMESPACES ('http://Something/A' as ns3,
'http://Something/B' as ns2,
'http://Something/C' as ns1)
SELECT COLUMN1 as 'ns1:A1',
COLUMN2 as 'ns1:A2',
COLUMN3 as 'ns1:A3'
FROM MYTABLE
FOR XML PATH ('ns1:A'), ROOT('ns1:Message'), ELEMENTS
This query works fine, but when I try to add the ns2 or ns3 namespace in the query nothing seems to work. How must this be done.
Thanks in advance!
I do not quite understand, what you try to achieve...
This works:
WITH XMLNAMESPACES ('http://Something/A' as ns3,
'http://Something/B' as ns2,
'http://Something/C' as ns1)
SELECT COLUMN1 as 'ns1:A1',
COLUMN2 as 'ns2:A1',
COLUMN3 as 'ns3:A1'
FROM MYTABLE
FOR XML PATH ('ns1:A'), ROOT('ns1:Message'), ELEMENTS
The element name "A1" will be there multiple times, but - due to the namespace - it is handled as different elements. That is the main purpose of a namespace.
In most cases there is a default namespace xmlns="SomeURL" and sub-namespaces like xmlns:sub1="SomeSubURL". Elements without a specific namespace belong to the default namespace, other elements would start with sub1:SomeName and therefore belong to the sub-namespace. But there's no need to define a default namespace.
I think you've got a misconception what a namespace is meant to be. Your example would not need a namespace... You are using nestings to group your data...
The following code would produce exactly the XML you want to reach, but this design seems over complicated... Maybe you have a good reason for this.
WITH XMLNAMESPACES ('http://Something/C' as ns1
,'http://Something/A' as ns2
,'http://Something/B' as ns3)
SELECT 201608111003201 AS [ns1:A/ns1:A1]
,'Some text' AS [ns1:A/ns1:A2]
,'More text' AS [ns1:A/ns1:A3]
,123456788 AS [ns2:B/ns2:B1]
,'Even more text' AS [ns2:B/ns2:B2]
,'E232323' AS [ns3:C/ns3:C1]
,'P' AS [ns3:C/ns3:C2]
FOR XML PATH (''), ROOT('ns1:Message'), ELEMENTS
The result
<ns1:Message xmlns:ns3="http://Something/B" xmlns:ns2="http://Something/A" xmlns:ns1="http://Something/C">
<ns1:A>
<ns1:A1>201608111003201</ns1:A1>
<ns1:A2>Some text</ns1:A2>
<ns1:A3>More text</ns1:A3>
</ns1:A>
<ns2:B>
<ns2:B1>123456788</ns2:B1>
<ns2:B2>Even more text</ns2:B2>
</ns2:B>
<ns3:C>
<ns3:C1>E232323</ns3:C1>
<ns3:C2>P</ns3:C2>
</ns3:C>
</ns1:Message>
I want to set a processing instruction to include a stylesheet on top of an XML:
The same issue was with the xml-declaration (e.g. <?xml version="1.0" encoding="utf-8"?>)
Desired result:
<?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
<TestPath>
<Test>Test</Test>
<SomeMore>SomeMore</SomeMore>
</TestPath>
My research brought me to node test syntax and processing-instruction().
This
SELECT 'type="text/xsl" href="stylesheet.xsl"' AS [processing-instruction(xml-stylesheet)]
,'Test' AS Test
,'SomeMore' AS SomeMore
FOR XML PATH('TestPath')
produces this:
<TestPath>
<?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
<Test>Test</Test>
<SomeMore>SomeMore</SomeMore>
</TestPath>
All hints I found tell me to convert the XML to VARCHAR, concatenate it "manually" and convert it back to XML. But this is - how to say - ugly?
This works obviously:
SELECT CAST(
'<?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
<TestPath>
<Test>Test</Test>
<SomeMore>SomeMore</SomeMore>
</TestPath>' AS XML);
Is there a chance to solve this?
There is another way, which will need two steps but don't need you to treat the XML as string anywhere in the process :
declare #result XML =
(
SELECT
'Test' AS Test,
'SomeMore' AS SomeMore
FOR XML PATH('TestPath')
)
set #result.modify('
insert <?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>
before /*[1]
')
Sqlfiddle Demo
The XQuery expression passed to modify() function tells SQL Server to insert the processing instruction node before the root element of the XML.
UPDATE :
Found another alternative based on the following thread : Merge the two xml fragments into one? . I personally prefer this way :
SELECT CONVERT(XML, '<?xml-stylesheet type="text/xsl" href="stylesheet.xsl"?>'),
(
SELECT
'Test' AS Test,
'SomeMore' AS SomeMore
FOR XML PATH('TestPath')
)
FOR XML PATH('')
Sqlfiddle Demo
As it came out, har07's great answer does not work with an XML-declaration. The only way I could find was this:
DECLARE #ExistingXML XML=
(
SELECT
'Test' AS Test,
'SomeMore' AS SomeMore
FOR XML PATH('TestPath'),TYPE
);
DECLARE #XmlWithDeclaration NVARCHAR(MAX)=
(
SELECT N'<?xml version="1.0" encoding="UTF-8"?>'
+
CAST(#ExistingXml AS NVARCHAR(MAX))
);
SELECT #XmlWithDeclaration;
You must stay in the string line after this step, any conversion to real XML will either give an error (when the encoding is other then UTF-16) or will omit this xml-declaration.
I have a table called XML (in SQL Server 2008) and it has a field called XmlDocument of type XML. I am trying to to delete an attribute from an XML variable.
Here is how my xml looks like
<clue_personal_auto xmlns="http://cp.com/rules/client">
<admin>
<receipt_date>03/16/2011</receipt_date>
<date_request_ordered>03/16/2011</date_request_ordered>
<report_usage>Personal</report_usage>
</admin>
</clue_personal_auto>
My query
UPDATE XML
SET XmlDocument.modify('delete (/clue_personal_auto/#xmlns)[1]')
WHERE xmlid = 357
When I run this query in query analyzer I see the message "1 row(s) affected" but in reality the xmlns attribute of clue_personal_auto element is not being removed. Any idea what am I doing wrong.
Thanks
BB
You need to use WITH xmlnamespaces, otherwise "/clue_personal_auto" does not match the NAMESPACED clue_personal_auto xmlns="..." node.
Not only that, you cannot actually remove a namespace since it is not a normal attribute.
Example of removing a regular attribute
declare #xml table (xmlid int, xmldocument xml)
insert #xml select 357, '
<clue_personal_auto xmlns="http://cp.com/rules/client" otherattrib="x">
<admin>
<receipt_date>03/16/2011</receipt_date>
<date_request_ordered>03/16/2011</date_request_ordered>
<report_usage>Personal</report_usage>
</admin>
</clue_personal_auto>'
;WITH XMLNAMESPACES ('http://cp.com/rules/client' as ns)
UPDATE #XML
SET XmlDocument.modify('delete (/ns:clue_personal_auto/#otherattrib)[1]')
WHERE xmlid = 357
select * from #xml
UPDATE XML
SET CONVERT(XML, REPLACE(CONVERT(NVARCHAR(MAX), XmlDocument), N' xmlns=...'))
WHERE ID = 357
I can't seem to find an easy way to do this - but the real question remains: why do you want to remove the namespace?? Using the WITH XMLNAMESPACES ... construct, you can easily make use of the namespaces.
Instead of putting a lot of effort in getting rid of it - learn about XML namespaces and start using them!
You can quite easily use that XML namespace in your queries:
;WITH XMLNAMESPACES (DEFAULT 'http://cp.com/rules/client' )
SELECT
XmlDocument.value('(/clue_personal_auto/admin/report_usage)[1]', 'varchar(25)')
FROM XML
WHERE ID = 357
and be happy with it - no need to artificially remove xmlns= declarations anymore!
I have a table in SQL server that contains an Xml column and I am having trouble querying it. I don't know enough about XPath to determine if my query is wrong, or if it is because of what seems like conflicting namespaces. Here is an example xml:
<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope"
xmlns:a="http://www.w3.org/2005/08/addressing"
xmlns:u="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
<s:Header>
<!-- snip -->
</s:Header>
<s:Body>
<FetchRequest xmlns="http://www.foobar.org/my/schema">
<Contract xmlns:a="http://www.foobar.org/2014/04/datacontracts"
xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<a:RequestedBy>John Doe</a:RequestedBy>
<a:TransactionId>ABC20140402000201</a:TransactionId>
</Contract>
</FetchRequest>
</s:Body>
</s:Envelope>
I want to retrieve TransactionId from the xml. The query I tried was this:
SELECT TOP 100
MessageXml,
MessageXml.value('
declare namespace s="http://www.w3.org/2003/05/soap-envelope";
declare namespace a="http://www.w3.org/2005/08/addressing";
(/s:Envelope/s:Body/FetchRequest/Contract/a:TransactionId)[1]', 'varchar(max)')
FROM dbo.Message
I am getting back NULL for my MessageXml.value. If I remove everything after s:Body I seem to get a bunch of text that is concatenated, but as soon as I add FetchRequest I get NULL back in my results.
I did notice that the Contract element defines a namespace of a, and the Envelope also defines a namespace of a, but I wasn't sure if that is a problem or not.
How can I retrieve TransactionId using an XPath query given the above xml example?
I know that answer is accepted, but there is actually simplier way of doing it, if the only thing you need to do is select node value. Just use * as namespace name:
SELECT MessageXml
, MessageXml.value('(/*:Envelope/*:Body/*:FetchRequest/*:Contract/*:TransactionId)[1]'
, 'varchar(max)')
FROM dbo.Message
You have two problems :
you're not respecting the implicit default XML namespace on the <FetchRequest> node
the XML namespace with the a: prefix is first defined on the <s:Envelope> node, and is being re-declared on the <Contract> node (really really bad practice in my opinion) and you need to use the second declaration for anything below the <Contract> node.
So you need something like this (I prefer to define the XML namespaces upfront, in a WITH XMLNAMESPACES() statement):
;WITH XMLNAMESPACES('http://www.w3.org/2003/05/soap-envelope' AS s,
'http://www.foobar.org/2014/04/datacontracts' AS a,
'http://www.foobar.org/my/schema' AS fb)
SELECT
MessageXml,
MessageXml.value('(/s:Envelope/s:Body/fb:FetchRequest/fb:Contract/a:TransactionId)[1]', 'varchar(max)')
FROM
dbo.Message
This will output the whole query and the value ABC20140402000201 for your second column.
FetchRequest and Contract are in namespace http://www.foobar.org/my/schema and alias a is redefined in the document. You need:
SELECT TOP 100
MessageXml,
MessageXml.value('declare namespace s="http://www.w3.org/2003/05/soap-envelope";
declare namespace a="http://www.w3.org/2005/08/addressing";
declare namespace f="http://www.foobar.org/my/schema";
declare namespace x="http://www.foobar.org/2014/04/datacontracts";
(/s:Envelope/s:Body/f:FetchRequest/f:Contract/x:TransactionId)[1]', 'varchar(max)')
FROM dbo.Message;
Fiddle here: