say my xml doc is this
<root xmlns="http://www.w3.org/2001/XMLSchema-instance">
<parent prop="1">
<child>
<field name="1">
<value1>abc</value1>
<value2>cdf</value2>
</field>
<field name="2">
<value1>efg</value1>
<value2>hjk</value2>
</field>
</child>
</parent>
<parent2>
<prop atrb="2">abc</prop>
</parent2>
</root>
i have it a table newTable2 and xml datatyped column as xmlcol1
here is the query i worte
SELECT xmlcol1.query('/root/parent/child/field/value1/text()') AS a
FROM newTable2
this works when i remove the xmlns attribute if i put it back it does can anyone explain why is it so and how can i query for same keeping the xmlns attribute.
Try this:
;with xmlnamespaces (
default 'http://www.w3.org/2001/XMLSchema-instance'
)
SELECT xmlcol1.query('/root/parent/child/field/value1/text()') AS a_query
, xmlcol1.value('(/root/parent/child/field/value1/text())[1]', 'varchar(255)') AS a_value_1
, xmlcol1.value('(/root/parent/child/field/value1/text())[2]', 'varchar(255)') AS a_value_2
FROM newTable2
never mind i found the answer
i just need to use the
;WITH XMLNAMESPACES(DEFAULT 'http://www.w3.org/2001/XMLSchema-instance')
before the query
Related
I'm generating XML from a SQL Server table.
This is my code:
;WITH XMLNAMESPACES
(
'http://www.w3.org/2001/XMLSchema-instance' AS xsi
--,DEFAULT 'http://www.w3.org/2001/XMLSchema-instance' -- xmlns
)
SELECT
'T_Contracts' AS "#tableName",
(SELECT * FROM T_Contracts
FOR XML PATH('row'), TYPE, ELEMENTS xsinil)
FOR XML PATH('table'), TYPE, ELEMENTS xsinil
I want the result to look like this (note: attribute tableName on the root element):
<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" tableName="T_Contracts">
<row>
<VTR_UID>779FE899-4E81-4D8C-BF9B-3F17BC1DF146</VTR_UID>
<VTR_MDT_ID>0</VTR_MDT_ID>
<VTR_VTP_UID xsi:nil="true" />
<VTR_Nr>0050/132251</VTR_Nr>
</row>
</table>
But it duplicates the XSI namespace on the row element...
<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" tableName="T_Contracts">
<row xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<VTR_UID>779FE899-4E81-4D8C-BF9B-3F17BC1DF146</VTR_UID>
<VTR_MDT_ID>0</VTR_MDT_ID>
<VTR_VTP_UID xsi:nil="true" />
<VTR_Nr>0050/132251</VTR_Nr>
</row>
</table>
What's the correct way to add an attribute to the root element, and only the root element ?
Note
NULL-values must be returned as <columnName xsi:nil="true" /> and not be omitted.
(And no xml.modify after the select)
Please note that this is NOT a duplicate of an existing question.
This annoying behaviour of repeated namespaces with sub-queries was a reported issue for more than 10 years on MS-Connect with thousands of votes. This platform was dismissed, so was this issue and there is no perspective that MS will ever solve this.
Just to be fair: It is not wrong to repeat the namespace declaration. It's just bloating the string-based output...
Even stranger is the the unsupported attribute on a root level node...
Well, if you need a head-ache, you might look into OPTION EXPLICIT :-)
The accepted answer by Marc Guillot will not produce xsi:nil="true" attributes as you seem to need them. It will just wrap your result with the appropriate root node.
Finally: This cannot be solved with XML methods, you can try this:
Update: Found a way, see below...
DECLARE #tbl TABLE(ID INT,SomeValue INT);
INSERT INTO #tbl VALUES(1,1),(2,NULL);
SELECT CAST(REPLACE(CAST(
(
SELECT *
FROM #tbl
FOR XML PATH('row'),ROOT('table'),TYPE, ELEMENTS XSINIL
) AS nvarchar(MAX)),'<table ','<table tableName="T_Contracts" ') AS XML);
The result
<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" tableName="T_Contracts">
<row>
<ID>1</ID>
<SomeValue>1</SomeValue>
</row>
<row>
<ID>2</ID>
<SomeValue xsi:nil="true" />
</row>
</table>
The idea in short:
We create the XML without a sub-query and add the attribute with a string method into the casted XML.
As the position of an attribute is not important, we can add it everywhere.
alternatively you might search for the first closing > and use STUFF() there...
UPDATE
Heureka, I just found a way, to create this without swithing to string, but it's clumsy :-)
DECLARE #tbl TABLE(ID INT,SomeValue INT);
INSERT INTO #tbl VALUES(1,1),(2,NULL);
SELECT
(
SELECT 'T_Contracts' AS [#tableName]
,(
SELECT 'SomeRowAttr' AS [#testAttr] --added this to test row-level attributes
,*
FROM #tbl
FOR XML PATH('row'),TYPE, ELEMENTS XSINIL
)
FOR XML PATH('table'),TYPE, ELEMENTS XSINIL
).query('<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">{/table/#*}
{
for $nd in /table/row
return
<row>{$nd/#*}
{
$nd/*
}
</row>
}
</table>');
The result
<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" tableName="T_Contracts">
<row testAttr="SomeRowAttr">
<ID>1</ID>
<SomeValue>1</SomeValue>
</row>
<row testAttr="SomeRowAttr">
<ID>2</ID>
<SomeValue xsi:nil="true" />
</row>
</table>
Why don't you build manually the root element ?
Example:
with CTE as (
select (select * from T_Contracts for xml path('row')) as MyXML
)
select '<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" tableName="T_Contracts">' +
MyXML +
'</table>'
from CTE
Unfortunately you cannot do this with the SQL Server out of the box nor exists an elegant way to do that. To alleviate the issue, you can replace NULLs with empty strings. This will remove xmlns, but you have to define your select list explicitly as follows. Moreover, this works only with character string data types as you cannot assign an empty string ('' in ISNULL function) to-for example-an integer.
;WITH XMLNAMESPACES
(
'http://www.w3.org/2001/XMLSchema-instance' AS xsi
--,DEFAULT 'http://www.w3.org/2001/XMLSchema-instance' -- xmlns
)
SELECT 'T_Contracts' AS "#tableName",
(
SELECT
ISNULL(VTR_UID, '') 'row/VTR_UID'
,ISNULL(VTR_MDT_ID, '') 'row/VTR_MDT_ID'
,ISNULL(VTR_VTP_UID, '') 'row/VTR_VTP_UID'
,ISNULL(VTR_Nr, '') 'row/VTR_Nr'
FROM T_Contracts
FOR XML PATH(''), TYPE
)
FOR XML PATH('table'), TYPE, ELEMENTS xsinil
The result will be like below:
<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" tableName="T_Contracts">
<row>
<VTR_UID>779FE899-4E81-4D8C-BF9B-3F17BC1DF146</VTR_UID>
<VTR_MDT_ID>0</VTR_MDT_ID>
<VTR_VTP_UID />
<VTR_Nr>0050/132251</VTR_Nr>
</row>
</table>
I'm basically trying to reverse what this question is asking...
SQL Server query xml attribute for an element value
I need to produce a result set of "row" elements that contain a group of "field" elements with an attribute that defines the key.
<resultset statement="" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<row>
<field name="id">1</field>
<field name="version”>0</field>
<field name="property">My Movie</field>
<field name="release_date">2012-01-01</field>
<field name="territory_code”>FR</field>
<field name="territory_description">FRANCE</field>
<field name="currency_code”>EUR</field>
</row>
<row>
<field name="id">2</field>
<field name="version”>0</field>
<field name="property">My Sequel</field>
<field name="release_date">2014-03-01</field>
<field name="territory_code”>UK</field>
<field name="territory_description">United Kingdom</field>
<field name="currency_code”>GBP</field>
</row>
</resultset>
I've got a query that returns this...
<resultset statement="" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<row>
<id>1</id>
<version>0</version>
<property>My Movie</property>
<release_date>2012-01-01</release_date>
<territory_code>FR</territory_code>
<territory_description>FRANCE</territory_description>
<currency_code>EUR</currency_code>
</row>
<row>
<id>2</id>
<version>0</version>
<property>My Sequel</property>
<release_date>2014-03-01</release_date>
<territory_code>UK</territory_code>
<territory_description>UNITED KINGDOM</territory_description>
<currency_code>GBP</currency_code>
</row>
</resultset>
Using FOR XML PATH ('row'), ROOT ('resultset') in my SQL statement.
What am I missing? Thanks.
It's a bit involved in SQL Server - the normal behavior is what you're seeing - the column names will be used as XML element names.
If you really want all XML elements to be named the same, you'll have to use code something like this:
SELECT
'id' AS 'field/#name',
id AS 'field',
'',
'version' AS 'field/#name',
version AS 'field',
'',
'property' AS 'field/#name',
property AS 'field',
'',
... and so on ....
FROM Person.Person
FOR XML PATH('row'),ROOT('resultset')
This is necessary to make sure the column name is used as the name attribute on the <field> element, and the empty string are necessary so that the SQL XML parser doesn't get confused about which name attribute belongs to what element......
You can do this without having to specify the columns as constants and that will allow you to also use select *. It is a bit more complicated than the answer provided by marc_s and it will be quite a lot slower to execute.
select (
select T.X.value('local-name(.)', 'nvarchar(128)') as '#name',
T.X.value('text()[1]', 'nvarchar(max)') as '*'
from C.X.nodes('/X/*') as T(X)
for xml path('field'), type
)
from (
select (
select T.*
for xml path('X'), type
) as X
from dbo.YourTable as T
) as C
for xml path('row'), root('resultset')
SQL Fiddle
The query creates a derived table where each row has a XML that looks something like this:
<X>
<ID>1</ID>
<Col1>1</Col1>
<Col2>2014-08-21</Col2>
</X>
That XML is then shredded using nodes() and local-name(.) to create the shape you want.
Your SELECT statement needs to look something like this
SELECT
'id' AS [field/#name],
id AS field,
'version' AS [field/#name],
version AS field,
'property' AS [field/#name],
property AS field,
'release_date' AS [field/#name],
release_date AS field,
'territory_code' AS [field/#name],
territory_code AS field,
'territory_description' AS [field/#name],
territory_description AS field,
'currency_code' AS [field/#name],
currency_code AS field
Here is my SQL. I cannot seem to get one single value out of this thing. It only works if I remove all of the xmlns attributes.
I think the problem is that this xml contains 2 default namespaces, one attached to the Response element and one attached to the Shipment element.
DECLARE #xml XML
SET #xml = '<TrackResponse xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Response xmlns="http://www.ups.com/XMLSchema/XOLTWS/Common/v1.0">
<ResponseStatus>
<Code>1</Code>
<Description>Success</Description>
</ResponseStatus>
<TransactionReference />
</Response>
<Shipment xmlns="http://www.ups.com/XMLSchema/XOLTWS/Track/v2.0">
<InquiryNumber>
<Code>01</Code>
<Description>ShipmentIdentificationNumber</Description>
<Value>1ZA50209234098230</Value>
</InquiryNumber>
<ShipperNumber>A332098</ShipperNumber>
<ShipmentAddress>
<Type>
<Code>01</Code>
<Description>Shipper Address</Description>
</Type>
<Address>
<AddressLine>123 HWY X</AddressLine>
<City>SOMETOWN</City>
<StateProvinceCode>SW</StateProvinceCode>
<PostalCode>20291 1234</PostalCode>
<CountryCode>US</CountryCode>
</Address>
</ShipmentAddress>
<ShipmentWeight>
<UnitOfMeasurement>
<Code>LBS</Code>
</UnitOfMeasurement>
<Weight>0.00</Weight>
</ShipmentWeight>
<Service>
<Code>42</Code>
<Description>UPS GROUND</Description>
</Service>
<Package>
<TrackingNumber>1ZA50209234098230</TrackingNumber>
<PackageServiceOption>
<Type>
<Code>01</Code>
<Description>Signature Required</Description>
</Type>
</PackageServiceOption>
<Activity>
<ActivityLocation>
<Address>
<City>SOMEWHERE</City>
<StateProvinceCode>PA</StateProvinceCode>
<CountryCode>US</CountryCode>
</Address>
</ActivityLocation>
<Status>
<Type>X</Type>
<Description>Damage reported. / Damage claim under investigation.</Description>
<Code>UY</Code>
</Status>
<Date>20120424</Date>
<Time>125000</Time>
</Activity>
<Activity>
<ActivityLocation>
<Address>
<City>SOMEWHERE</City>
<StateProvinceCode>PA</StateProvinceCode>
<CountryCode>US</CountryCode>
</Address>
</ActivityLocation>
<Status>
<Type>X</Type>
<Description>All merchandise discarded. UPS will notify the sender with details of the damage.</Description>
<Code>GY</Code>
</Status>
<Date>20120423</Date>
<Time>115500</Time>
</Activity>
<PackageWeight>
<UnitOfMeasurement>
<Code>LBS</Code>
</UnitOfMeasurement>
<Weight>0.00</Weight>
</PackageWeight>
</Package>
</Shipment>
</TrackResponse>'
select Svc.Dsc.value('(/TrackResponse/Shipment/Service/Description)[1]', 'varchar(25)')
from #xml.nodes('/TrackResponse') as Svc(Dsc)
As #marc_s said, you are ignoring xml namespaces. Here is a sql fiddle example. This gives X, I think that is what you need. Read this article for more. Note : *:TrackResponse[1]/*: in the xpath
--Results: X
declare #xmlTable as table (
xmlData xml
)
insert into #xmlTable
select '<TrackResponse xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Response xmlns="http://www.ups.com/XMLSchema/XOLTWS/Common/v1.0">
...
</TrackResponse>'
;with xmlnamespaces(default 'http://www.ups.com/XMLSchema/XOLTWS/Track/v2.0')
select
x.xmlData.value('(/*:TrackResponse[1]/*:Shipment[1]/Package[1]/Activity[1]/Status[1]/Type[1])','varchar(100)') as all_snacks
from #xmlTable x
Two problems:
you're blatantly ignoring the XML namespace that's defined on the <shipment> element
your XQuery expression was a bit off
Try this:
-- define XML namespace
;WITH XMLNAMESPACES('http://www.ups.com/XMLSchema/XOLTWS/Track/v2.0' AS ns)
select
Svc.Dsc.value('(ns:Shipment/ns:Service/ns:Description)[1]', 'varchar(25)')
from
-- this already selects all <TrackResponse> nodes - no need to repeat that in
-- your above call to .value()
#xml.nodes('/TrackResponse') as Svc(Dsc)
Gives me a result of:
UPS GROUND
I've created a simplified version of my problem:
DECLARE #X XML =
'<Root xmlns="TestNS" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<Test>
<Id>1</Id>
<InnerCollection>
<InnerItem>
<Value>1</Value>
</InnerItem>
<InnerItem>
<Value>2</Value>
</InnerItem>
<InnerItem>
<Value>3</Value>
</InnerItem>
</InnerCollection>
</Test>
<Test>
<Id>2</Id>
<InnerCollection>
<InnerItem>
<Value>5</Value>
</InnerItem>
<InnerItem>
<Value>6</Value>
</InnerItem>
<InnerItem>
<Value>7</Value>
</InnerItem>
</InnerCollection>
</Test>
</Root>'
I'm trying to write a query that takes each <Test> element and breaks it into a row. On each row I want to select the Id and the InnerCollection as XML. I want to create this InnerCollection XML for the first row (Id:1):
<InnerCollection xmlns="Reed.Api" xmlnsi="http//www.w3.org/2001/XMLSchema-instance">
<InnerItem>
<Value>1</Value>
</InnerItem>
<InnerItem>
<Value>2</Value>
</InnerItem>
<InnerItem>
<Value>3</Value>
</InnerItem>
</InnerCollection>
I tried doing that with this query but it puts a namespace I don't want on the elements:
;WITH XMLNAMESPACES
(
DEFAULT 'TestNS'
, 'http://www.w3.org/2001/XMLSchema-instance' AS i
)
SELECT
X.value('Id[1]', 'INT') Id
-- Creates a p1 namespace that I don't want.
, X.query('InnerCollection') InnerCollection
FROM #X.nodes('//Test') AS T(X)
My Google-fu isn't very strong today, but I imagine it doesn't make it any easier that the darn function is called query. I'm open to using other methods to create that XML value other than the query method.
I could use this method:
;WITH XMLNAMESPACES
(
DEFAULT 'TestNS'
, 'http://www.w3.org/2001/XMLSchema-instance' AS i
)
SELECT
X.value('Id[1]', 'INT') Id
,CAST(
(SELECT
InnerNodes.Node.value('Value[1]', 'INT') AS 'Value'
FROM X.nodes('./InnerCollection[1]//InnerItem') AS InnerNodes(Node)
FOR XML PATH('InnerItem'), ROOT('InnerCollection')
) AS XML) AS InnerCollection
FROM #X.nodes('//Test') AS T(X)
But that involves calling nodes on it to break it out into something selectable, and then selecting it back into XML using FOR XML... when it was XML to begin with. This seems like a inefficient method of doing this, so I'm hoping someone here will have a better idea.
This is how to do the SELECT using the query method to create the XML on each row that my question was looking for:
;WITH XMLNAMESPACES
(
'http://www.w3.org/2001/XMLSchema-instance' AS i
, DEFAULT 'TestNS'
)
SELECT
Test.Row.value('Id[1]', 'INT') Id
, Test.Row.query('<InnerCollection xmlns="TestNS" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">{InnerCollection}</InnerCollection>')
FROM #X.nodes('/Root/Test') AS Test(Row)
Please help! Is it possible to replace elements within an xml field of an sql database with other elements. I have tried using .modify(replace value of) but I can only replace text within elements rather than nodes.
Ultimately I am trying to update an element which may or may not contain other elements, with another element (possibly of the same name) within an XML field. (I am using SQL Server 2008)
E.g:
<Root>
<Sub>
<Value1>
</Value1>
<Value2>
</Value2>
<Value3>
</Value3>
</Sub>
</Root>
Would be replaced by:
<Root>
<SubVERSION2>
<Value1>
</Value1>
<Value2>
</Value2>
<Value3>
</Value3>
</SubVERSION2>
</Root>
Any help would be very much appreciated!
You can recreate your XML:
declare #x xml = '<Root>
<Sub>
<Value1>1
</Value1>
<Value2>2
</Value2>
<Value3>3
</Value3>
</Sub>
</Root>'
select cast(('<Root>' +
cast(
(
select t.c.query('.')
from #x.nodes('Root/Sub/*') t(c)
for xml path(''), root('SubVERSION2')
) as nvarchar(max)) + '</Root>') as xml)
produces desired output:
<Root>
<SubVERSION2>
<Value1>1
</Value1>
<Value2>2
</Value2>
<Value3>3
</Value3>
</SubVERSION2>
</Root>
declare #T table(XMLCol xml)
insert into #T values ('
<Root>
<Sub>
<Value1></Value1>
<Value2></Value2>
<Value3></Value3>
</Sub>
</Root>')
update #T set
XMLCol = XMLCol.query('for $s in Root/Sub
return
<Root>
<SubVERSION2>
{ $s/* }
</SubVERSION2>
</Root>')
Result:
<Root>
<SubVERSION2>
<Value1 />
<Value2 />
<Value3 />
</SubVERSION2>
</Root>