I am trying to update a node of in my XML which is stored in a SQL Server XML column, the line below works if my XML is in a XML element but now I somehow need to change it to XML attributes, apparently the line becomes invalid after the change.
Works for XMLElement:
UPDATE [Customers]
SET voucherXML.modify('replace value of (/ArrayOfCampaignVoucher/CampaignVoucher/Qty/text())[1] with "50"')
WHERE voucherXML.value('(/ArrayOfCampaignVoucher/CampaignVoucher/VouCode)[1]', 'nvarchar(50)') = #VoucherCode
I tried changing the statement like this but no luck, no errors but QTY values doesn't get change to the value of #NewQuantity:
UPDATE [Customers]
SET voucherXML='<ArrayOfCampaignVoucher xmlns:xsd="http://www.w3.org/2001/XMLSchema" Qty="' + CAST(#NewQuantity AS NVARCHAR(16)) + '" />'
WHERE voucherXML.value('(/CampaignVoucher/VouCode)[1]', 'nvarchar(50)') = #VoucherCode
This is how my XML looks in the SQL Server XML column:
<ArrayOfCampaignVoucher xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<CampaignVoucher VouCode="Vouc001" Qty="16" />
<CampaignVoucher VouCode="Vouc002" Qty="18" />
<CampaignVoucher xsi:nil="true" />
</ArrayOfCampaignVoucher>
You should use the XQuery functions - not string together your XML like this....
Try this instead:
DECLARE #newquantity INT = 55
UPDATE dbo.Customers
SET voucherXML.modify('replace value of (/ArrayOfCampaignVoucher/CampaignVoucher[#VouCode="Vouc002"]/#Qty)[1] with sql:variable("#NewQuantity") ')
This works for me - the Qty attribute of the node with VouCode="Vouc002" gets updated to the value I defined before in a SQL variable
Update: to insert a new <CampaignVoucher> entry, use XQuery something like this:
UPDATE dbo.Customers
SET voucherXML.modify('insert <CampaignVoucher VouCode="Vouc003" Qty="42" />
as last into (/ArrayOfCampaignVoucher)[1]')
Related
I have a SQL Server database table with a column called XML that contains XML data which is structured like this:
<Item xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://test/data">
<Roots>
<Root>
<Name>Field Name</Name>
<Value>Field Value</Value>
</Root>
<Root>
<Name>Field Name</Name>
<Value>Field Value</Value>
</Root>
</Roots>
I want to use T-SQL to get the Value where Name = Total. I have tried the following but it isn't returning any data:
SELECT [XML]
FROM [BusinessAccount]
WHERE [XML].value('(/Root/Name)[13]', 'VARCHAR(MAX)') LIKE '%Total%'
If anyone could tell me where I've gone wrong?
You are missing the required WITH XMLNAMESPACES for your XML and the path is incorrect.
If you want to bring back rows where the 13th element consists of the text Total you can use the below.
WITH XMLNAMESPACES (DEFAULT 'http://test/data')
SELECT [XML]
FROM [BusinessAccount]
WHERE 1 = [XML].exist('(/Item/Roots/Root/Name)[13][text() = "Total"]')
Otherwise you can add the WITH XMLNAMESPACES to your original query and fix the path there too.
You need to specify namespaces. You can then match <Name> and <Value> pairs and extract the contents of <Value> like so:
SELECT NameNode.value('declare namespace x="http://test/data"; (../x:Value)[1]', 'varchar(100)')
FROM [BusinessAccount]
CROSS APPLY [XML].nodes('declare namespace x="http://test/data"; //x:Root/x:Name') AS n(NameNode)
WHERE NameNode.value('.', 'varchar(100)') = 'Total'
Demo on db<>fiddle
I have an issue as I never done that before.
I have an SQL table with the following :
ID int;
xml_record xml;
The xml record is looking like that :
<root xml:space="preserve" id="XXX">
<c1>Data1</c1>
<c2>Data2</c2>
<c3>Data3</c3>
...
<cn>DataN</cn>
</root>
However I tried to use the following query with no success (return null) :
SELECT xml_record.value('c1[1]','varchar(50)') as value_c1
FROM myTable
The problem might come from the "space" but not sure.
You just need to fix the expression:
SELECT xml_record.value('(/root/c1)[1]','varchar(50)') AS value_c1
FROM ...
SELECT
xml_record.value
( '(/root/c1/text())[1])',
'varchar(50)') as value_c1
FROM myTable
else remove the first xml line
I have my XML in following format:
<resultset xmlns="qm_system_resultset" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<result>
<result_id>F5</result_id>
<exception>NO</exception>
<recurring_count>0</recurring_count>
<defect>NO</defect>
<unresolved>NO</unresolved>
<exception_approval />
<comments />
<exception_expiration>3000-01-01</exception_expiration>
<exception_stat_only>NO</exception_stat_only>
<result_data>
<phraseprefix>rx</phraseprefix>
<phrasenumber>0001</phrasenumber>
<languagedesc>Khmer</languagedesc>
<englishphrase> each time.</englishphrase>
<phrasedesc> គ្រាប់ក្នុងមួយដង។</phrasedesc>
<qm_translatedphrase>day.</qm_translatedphrase>
</result_data>
</result>
<result>
<result_id>26</result_id>
<exception>NO</exception>
<recurring_count>0</recurring_count>
<defect>NO</defect>
<unresolved>NO</unresolved>
<exception_approval />
<comments />
<exception_expiration>3000-01-01</exception_expiration>
<exception_stat_only>NO</exception_stat_only>
<result_data>
<phraseprefix>hold</phraseprefix>
<phrasenumber>0001</phrasenumber>
<languagedesc>Hmong</languagedesc>
<englishphrase>Hold than 160.</englishphrase>
<phrasedesc>Tsis 160.</phrasedesc>
<qm_translatedphrase>Do not use </qm_translatedphrase>
</result_data>
</result>
Using TSQL/XML query how do I achieve this RESULT
[phraseprefix][phrasenumber]
rx 0001
hold 0001
...
I tried the following query, but I got null values for both the columns:
DECLARE #input XML = (SELECT result_xml
FROM QM_Data_Audit.QM_Package.test_results
WHERE result_id = 2446338)
SELECT
resultset.value('(phraseprefix)[1]', 'varchar(max)') AS 'phrasenumber',
resultset.value('(phrasenumber)[1]', 'int') AS 'phrasenumber'
FROM #input.nodes('/resultset/result/result_data') AS List(resultset)
My apologies if the question is asked previously, I am new to querying XML.
Appreciate your help.
Your xml has a namespace declared so you need to provide this when querying it. In this example this can be acheived with the WITH XMLNAMESPACES statement:
DECLARE #input XML = (SELECT result_xml
FROM QM_Data_Audit.QM_Package.test_results
WHERE result_id = 2446338);
WITH XMLNAMESPACES(DEFAULT 'qm_system_resultset')
SELECT
resultset.value('(phraseprefix)[1]', 'varchar(max)') AS 'phrasenumber',
resultset.value('(phrasenumber)[1]', 'varchar(max)') AS 'phrasenumber'
FROM #input.nodes('/resultset/result/result_data') AS List(resultset)
You'll want to set the data type for phrasenumber to varchar as well to preserve the leading 0s if you need them.
I have a SQL Server database table like the following:-
Id (int) Info(xml)
------------------------
1 <xml....
2 <xml ...
3 <xml ...
The XML in each record in the Info field is something like:-
<CodesParameter xmlns="http://mynamespace.com/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Data Code="A1" HasMoreData="true">
.
.
</Data>
</CodesParameter>
I would like to be able to change the value of the <Data Code="..."> within the XML and have tried the following query:-
UPDATE MyTable
SET Info.modify('replace value of (Data[1]/#Code)with ("B1")')
WHERE Id = 2
Go
The message backs says that the query has executed successfully, but the value does not change.
I have tried declaring the namespace:-
UPDATE MyTable
SET Info.modify('declare namespace myns="http://mynamespace.com/";
replace value of (/myns:WebTableParameter[1]/myns:DataTable[1]/#Code)with ("B1")')
WHERE Id = 2
Go
But the same result - the message says the query has executed successfully, but nothing has changed.
Any help appreciated.
You have several problems:
you're totally ignoring the XML namespace on the XML document in question (in your original UPDATE)
you're using an incomplete XPath expression for your modify
Try this statement:
;WITH XMLNamespaces(DEFAULT 'http://mynamespace.com/')
UPDATE dbo.MyTable
SET Info.modify('replace value of (/CodesParameter/Data[1]/#Code)[1] with ("B1")')
WHERE Id = 1
Basically, you need to start at the root of the XML document - you've missed (or left out) the <CodesParameter> node entirely. Also: you need to select a single attribute - thus you need another [1] after your parenthesis.
With this statement, I was able to update the XML as desired.
This question already has answers here:
SQL Server FOR XML Enclosing Element?
(2 answers)
Closed 7 years ago.
I have a Script, which returns a XML using FOR XML in SQL 2008. Is there any way to add the version and encoding information in the beginning of the output. Eventually, i am planning to save the output in a file.
For example, right now my output looks like this
<Agents>
<Agent id="1">
<Name>Mike</Name>
<Location>Sanfrancisco</Location>
</Agent>
<Agent id="2">
<Name>John</Name>
<Location>NY</Location>
</Agent>
</Agents>
I would like to append the line <?xml version="1.0" encoding="UTF-8"?> in the beginning of the Xml output
So i want the output something like
<?xml version="1.0" encoding="UTF-8"?>
<Agents>
<Agent id="1">
<Name>Mike</Name>
<Location>Sanfrancisco</Location>
</Agent>
<Agent id="2">
<Name>John</Name>
<Location>NY</Location>
</Agent>
As #gbn points out in another answer and on another question, "the XML data is stored internally as ucs-2", and SQL Server doesn't include it when producing the data. However, you can convert the XML to a string and append the XML declaration at the beginning manually. However, simply using UTF-8 in the declaration would be inaccurate. The Unicode string which SQL produces is in UCS-2. For example, this will fail:
SELECT CONVERT(xml,N'<?xml version="1.0" encoding="UTF-8"?>' + CONVERT(NVARCHAR(MAX),CONVERT(XML,N'<x>' + NCHAR(10176) + N'</x>')));
with error:
Msg 9402, Level 16, State 1, Line 1 XML parsing: line 1, character 38,
unable to switch the encoding
This, on the other hand, will work as expected:
SELECT CONVERT(xml,N'<?xml version="1.0" encoding="UCS-2"?>' + CONVERT(NVARCHAR(MAX),CONVERT(XML,N'<x>' + NCHAR(10176) + N'</x>')));
Here is code which will produce the full, declaration-laden XML string you seek for your example data:
DECLARE #Agents TABLE
(
AgentID int,
AgentName nvarchar(50),
AgentLocation nvarchar(100)
);
INSERT INTO #Agents (AgentID, AgentName, AgentLocation) VALUES (1, N'Mike', N'Sanfrancisco');
INSERT INTO #Agents (AgentID, AgentName, AgentLocation) VALUES (2, N'John', N'NY');
WITH BaseData AS
(
SELECT
(
SELECT
AgentID AS '#id',
AgentName AS 'Name',
AgentLocation AS 'Location'
FROM #Agents
FOR XML PATH('Agent'), ROOT('Agents'), TYPE
) AS AgentXML
), FullStringTable AS
(
SELECT
*,
'<?xml version="1.0" encoding="UCS-2"?>' +
CONVERT(nvarchar(max),AgentXML) AS FullString
FROM BaseData
)
SELECT
AgentXML AS OriginalXML,
FullString,
CONVERT(xml,FullString) AS FullStringConvertedToXML
FROM FullStringTable;
SQL Server internally always uses utf-16 ucs-2 so you could just append it like we did. That is, SQL Server would never generate anything with "utf-8".
Edit: after some digging:
http://www.devnewsgroups.net/group/microsoft.public.sqlserver.xml/topic60022.aspx
http://forums.asp.net/t/1455808.aspx
If you will not be attempting to manipulate the results as TSQL XML then the simplest thing to do will be create a varchar with the string you wish to append then add the XML to it using a CAST statemnt to convert the XML to varchar.
declare #testXML as XML
declare #testPrefix as varchar(255)
set #testPrefix = '<?xml version="1.0" encoding="UTF-8"?>'
set #testXML = '<Agents> <Agent id="1"> <Name>Mike</Name> <Location>Sanfrancisco</Location> </Agent> <Agent id="2"> <Name>John</Name> <Location>NY</Location> </Agent></Agents>'
select #testPrefix
Select #testXML
select #testPrefix + CAST(#testXML as varchar(max))