I am trying to read the xml and storing it in SQL server.
DECLARE #xml XML
SET #xml =
'<report>
<personal>
<search>
<subject>
<name>SearchName</name>
</subject>
</search>
</personal>
<personal>
<search>
<subject>
<name>SearchName</name>
</subject>
</search>
<result>
<history>
<name>HistoryName</name>
</history>
</result>
</personal>
</report>
'
What i am trying here is - selecting the name but condition here is
if <personal> contains <result> then select the name under history/name
if <personal> doesn't contain <result> select the name under subject/name
currently i am selecting names from personal/subject as below:
Select
A.Search.value('(subject/name)[1]','varchar(max)')
FROM #xml.nodes('/report/personal/search') as A(Search)
Expecting result:
SearchName
HistoryName
How to add condition in between?
Is there any way we can add exists condition here
SELECT #xml.exist('//report//personal//search//subject//name')
Select coalesce(A.Search.value('(result/history/name)[1]', 'varchar(max)'), A.Search.value('(search/subject/name)[1]','varchar(max)'))
FROM #xml.nodes('/report/personal') as A(Search)
This:
SELECT
COALESCE(
A.Search.value('(result/history/name)[1]','varchar(max)'),
A.Search.value('(search/subject/name)[1]','varchar(max)')
) AS Name
FROM #xml.nodes('/report/personal') as A(Search)
will return:
Name
------------
SearchName
HistoryName
Related
I am creating an XML file to Upload to a 3rd party product. The file must begin with specific file and source information level and then it is followed with the specific data requirements/levels of EVENT and CREW members for those events.
I can create the initial level with the file/source information, and I have the data requirements exactly as they should be, but I cannot get them together in the same file between the "ROOT" level without the initial level repeating between each EVENT level or the an extra EVENT level as if they're nested. I've also managed to get a result with a ROW level that I did not define and the "tags" modified to < and >: instead of < >. I've done a good bit of research and tried using a union method, sub-selects, nesting methods as well many combinations of FOR XML PATH, AUTO, EXPLICIT, with and without elements. I've learned a lot, but I'm just not finding the right combination for the results I need.
The first example is the layout that is required. The second is one of the examples that is most common for my efforts, followed by the SQL that created it.
what it should be (FILEINFO level only once, only one EVENT level for each EVENT)
<ROOT>
<FILEINFO>
<SOURCE_ID>P</SOURCE_ID>
</FILEINFO>
<EVENT>
<DATE>2019-09-24T08:00:00</DATE>
<NO>1</NO>
<DEL_FLAG>false</DEL_FLAG>
<DATE_TIME_STAMP>2019-09-24T14:14:00</DATE_TIME_STAMP>
<CREW>
<LAST_NAME>DOE</LAST_NAME>
<DEL_FLAG>false</DEL_FLAG>
<DATE_TIME_STAMP>2019-09-24T14:14:00</DATE_TIME_STAMP>
</CREW>
</EVENT>
<EVENT>
<DATE>2019-09-16T12:30:00</DATE>
<NO>1</NO>
<DEL_FLAG>false</DEL_FLAG>
<DATE_TIME_STAMP>2019-09-16T18:20:00</DATE_TIME_STAMP>
<CREW>
<LAST_NAME>DOE</LAST_NAME>
<DEL_FLAG>false</DEL_FLAG>
<DATE_TIME_STAMP>2019-09-16T18:20:00</DATE_TIME_STAMP>
</CREW>
</EVENT>
</ROOT>
what i'm getting:
<ROOT>
<EVENT>
<FILEINFO>
<SOURCE_ID>P</SOURCE_ID>
</FILEINFO>
<EVENT>
<DATE>2019-09-16T08:00:00</DATE>
<NO>1</NO>
<DEL_FLAG>false</DEL_FLAG>
<DATE_TIME_STAMP>2019-09-16T15:12:00</DATE_TIME_STAMP>
<CREW>
<LAST_NAME>DOE</LAST_NAME>
<DEL_FLAG>false</DEL_FLAG>
<DATE_TIME_STAMP>2019-09-16T15:12:00</DATE_TIME_STAMP>
</CREW>
</EVENT>
</EVENT>
<EVENT>
<FILEINFO>
<SOURCE_ID>P</SOURCE_ID>
</FILEINFO>
<EVENT>
<DATE>2019-09-16T08:00:00</DATE>
<NO>1</NO>
<DEL_FLAG>false</DEL_FLAG>
<DATE_TIME_STAMP>2019-09-16T15:12:00</DATE_TIME_STAMP>
<CREW>
<LAST_NAME>DOE</LAST_NAME>
<DEL_FLAG>false</DEL_FLAG>
<DATE_TIME_STAMP>2019-09-16T15:12:00</DATE_TIME_STAMP>
</CREW>
</EVENT>
</EVENT>
... ...
most recent/simplest attempt that creates the above:
SELECT
(SELECT SOURCE_ID FROM (select 'P' as SOURCE_ID) FILEINFO ) AS 'FILEINFO/SOURCE_ID'
,[DATE] AS 'EVENT/DATE'
,[NO] AS 'EVENT/NO'
,[DEL_FLAG] AS 'EVENT/DEL_FLAG'
,[DATE_TIME_STAMP] AS 'EVENT/DATE_TIME_STAMP'
,'DOE' as 'EVENT/CREW/LAST_NAME'
,[DEL_FLAG2] as 'EVENT/CREW/DEL_FLAG'
,[DATE_TIME_STAMP3] as 'EVENT/CREW/DATE_TIME_STAMP'
FROM [dbo].XMLForFILEExport x
FOR XML path('EVENT'), elements, ROOT('ROOT') ;
This is easy, just use a sub-select and deal with this like it was a *normal column:
This easy SELECT will return the single <FILEINFO>
SELECT 'P' AS [FILEINFO/SOURCE_ID]
FOR XML PATH(''),ROOT('ROOT');
You see, that I used an empty PATH(), but I set the ROOT().
This is the result
<ROOT>
<FILEINFO>
<SOURCE_ID>P</SOURCE_ID>
</FILEINFO>
</ROOT>
Now we can start to add your events. First I need a mockup table to simulate your issue
DECLARE #mockupEventTable TABLE(ID INT IDENTITY,[NO] INT, [DATE] DATETIME, EventText VARCHAR(100));
INSERT INTO #mockupEventTable VALUES(1,'20190916','Event 1')
,(2,'20190917','Event 2');
--The query
SELECT 'P' AS [FILEINFO/SOURCE_ID]
,(
SELECT e.[DATE]
,e.[NO]
,e.EventText
,'Doe' AS [CREW/LASTNAME]
FROM #mockupEventTable e
FOR XML PATH('EVENT'),TYPE
) AS [*]
FOR XML PATH(''),ROOT('ROOT');
The result
<ROOT>
<FILEINFO>
<SOURCE_ID>P</SOURCE_ID>
</FILEINFO>
<EVENT>
<DATE>2019-09-16T00:00:00</DATE>
<NO>1</NO>
<EventText>Event 1</EventText>
<CREW>
<LASTNAME>Doe</LASTNAME>
</CREW>
</EVENT>
<EVENT>
<DATE>2019-09-17T00:00:00</DATE>
<NO>2</NO>
<EventText>Event 2</EventText>
<CREW>
<LASTNAME>Doe</LASTNAME>
</CREW>
</EVENT>
</ROOT>
You can see, that the sub-select will create the inner XML just as you need it. We have to specify ,TYPE in order to get this as typed XML. Try the same without. You will get the XML escaped, as if it was simple text...
And I specify AS [*] (the same was AS [node()]) to indicate, that the XML "column" has no own name, but should be inserted as is. This is not mandatory (try it without), but it makes things more readable...
That's because you specified the PATH "EVENT" already. Also you can remove the EVENT in the field name, e.g. 'EVENT/CREW/DATE_TIME_STAMP' can just be 'CREW/DATE_TIME_STAMP'
TO achieve what required, you can generate the xml with EVENT elementsand then insert the FILEINFO.
DECLARE #x xml;
SET #x=(SELECT
[DATE] AS 'DATE'
,[NO] AS 'NO'
,[DEL_FLAG] AS 'DEL_FLAG'
,[DATE_TIME_STAMP] AS 'DATE_TIME_STAMP'
,'DOE' as 'CREW/LAST_NAME'
,[DEL_FLAG2] as 'CREW/DEL_FLAG'
,[DATE_TIME_STAMP3] as 'CREW/DATE_TIME_STAMP'
FROM [dbo].XMLForFILEExport x
FOR XML path('EVENT'), elements, ROOT('ROOT'))
SET #x.modify('
insert <FILEINFO><SOURCE_ID>P</SOURCE_ID></FILEINFO>
as first
into (/ROOT)[1]');
I would like to parse XML into a table in SQL Server 2012 where my XML has nodes with the same name.
My SQL query which return only the first row:
SELECT
[date] = Node.Data.value('(date)[1]', 'NVARCHAR(MAX)'),
name = Node.Data.value('(name)[1]', 'VARCHAR(MAX)')
FROM
#xml.nodes('result/subject') Node(Data)
XML sample
<result>
<subject>
<date>2019-06-03</date>
<name>AZGREX</name>
<name>ABGDFC</name>
<name>WWGDFW</name>
<name>FDSFSD</name>
<name>FSDWEW</name>
<name>CXZCXZ</name>
<name>GWGRE</name>
</subject>
</result>
You need to use nodes in the FROM:
DECLARE #XML xml = '<result>
<subject>
<date>2019-06-03</date>
<name>AZGREX</name>
<name>ABGDFC</name>
<name>WWGDFW</name>
<name>FDSFSD</name>
<name>FSDWEW</name>
<name>CXZCXZ</name>
<name>GWGRE</name>
</subject>
</result>';
SELECT r.[subject].value('(date/text())[1]','date') AS [date],
s.[name].value('(./text())[1]','varchar(6)') AS [name] --obviously, you'll likely need a larger length
FROM (VALUES(#XML))V(X)
CROSS APPLY V.X.nodes('result/subject') r([subject])
CROSS APPLY r.[subject].nodes('name') s([name]);
I have this below xml data which is stored in a table.
The XML Structure I have
<Response>
<Question ID="1">
<Value ID="1">I want a completely natural childbirth - no medical interventions for me</Value>
<Value ID="2">no medical interventions for me</Value>
</Question>
</Response>
I need to convert this XML to a slightly different format, like the below one.
The XML Structure I need
<Response>
<Question ID="1">
<SelectedChoices>
<Choice>
<ID>1</ID>
</Choice>
<Choice>
<ID>2</ID>
</Choice>
</SelectedChoices>
</Question>
</Response>
Here the "Value" is changed to "Choice" and "ID" attribute of "Value" element is changed to an element.
I know this can be done in other ways, like using an XSLT. But it will be much more helpful if can accomplish with SQL itself.
Can someone help me to convert this using SQL?
Use this variable to test the statements
DECLARE #xml XML=
N'<Response>
<Question ID="1">
<Value ID="1">I want a completely natural childbirth - no medical interventions for me</Value>
<Value ID="2">no medical interventions for me</Value>
</Question>
</Response>';
This can be done with FLWOR-XQuery:
The query will re-build the XML out of itself... Very similar to XSLT...
SELECT #xml.query(
N'
<Response>
{
for $q in /Response/Question
return
<Question ID="{$q/#ID}">
<SelectedChoices>
{
for $v in $q/Value
return <Choice><ID>{string($v/#ID)}</ID></Choice>
}
</SelectedChoices>
</Question>
}
</Response>
'
);
Another approach: Shredding and re-build
You'd reach the same with this, but I'd prefere the first...
WITH Shredded AS
(
SELECT q.value('#ID','int') AS qID
,v.value('#ID','int') AS vID
FROM #xml.nodes('/Response/Question') AS A(q)
OUTER APPLY q.nodes('Value') AS B(v)
)
SELECT t1.qID AS [#ID]
,(
SELECT t2.vID AS ID
FROM Shredded AS t2
WHERE t1.qID=t2.qID
FOR XML PATH('Choice'),ROOT('SelectedChoices'),TYPE
) AS [node()]
FROM Shredded AS t1
GROUP BY t1.qID
FOR XML PATH('Question'),ROOT('Response')
I am trying to read the xml and storing it in SQL server.
DECLARE #xml XML
SET #xml =
'<report>
<personal>
<search>
<subject>
<name>SearchName</name>
</subject>
</search>
</personal>
<personal>
<search>
<subject>
<name>SearchName</name>
</subject>
</search>
<result>
<history>
<name>HistoryName</name>
</history>
</result>
</personal>
<personal>
<search>
<subject>
<name>SearchName</name>
</subject>
</search>
<result>
<history>
<dob>HistoryDOB</dob>
</history>
</result>
</personal>
</report>
'
What i am trying here is - selecting the name but condition here is
if <personal> contains <result> then select the name under history/name
if <personal> doesn't contain <result> select the name under subject/name
if <personal> contain <result>BUT name is not there then enter null
I am using below query
SELECT
COALESCE(
A.Search.value('(result/history/name)[1]','varchar(max)'),
A.Search.value('(search/subject/name)[1]','varchar(max)')
) AS Name
FROM #xml.nodes('/report/personal') as A(Search)
It is returning
SearchName
HistoryName
SearchName
But it is failing in 3rd condition.
Just tweak the second values call to specifically request what you've specified - that you'll only take a search/subject for nodes with no result:
SELECT
COALESCE(
A.Search.value('(result/history/name)[1]','varchar(max)'),
A.Search.value('(search[not(../result)]/subject/name)[1]','varchar(max)')
) AS Name
FROM #xml.nodes('/report/personal') as A(Search)
Result:
Name
------------------
HistoryName
SearchName
NULL
You can use exist method to chech if <personal> contains <result> or not.
Using it your algorithm can be straightforward translated to query as:
select
case
when A.Search.exist('result') = 1
then A.Search.value('(result/history/name)[1]','varchar(max)')
else A.Search.value('(search/subject/name)[1]','varchar(max)')
end as Name
FROM #xml.nodes('/report/personal') as A(Search)
I am using SQL Server 2008. I have a field called RequestParameters in one of my SQL table called Requests with XML data. An example would be:
<RequestParameters xmlns="http://schemas.datacontract.org/2004/07/My.Name.Space" xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/" z:Id="1">
<Data z:Id="2" i:type="CheckoutRequest">
<UserGuid>7ec38c44-5aa6-49e6-9fc7-25e9028f2148</UserGuid>
<DefaultData i:nil="true" />
</Data>
</RequestParameters>
I ultimately want to retrieve the value of UserGuid. For that, I am doing this:
SELECT RequestParameters.value('(/RequestParameters/Data/UserGuid)[0]', 'uniqueidentifier') as UserGuid
FROM Requests
However, the results I am seeing are all NULL. What am I doing wrong?
You have to specify the default namespace and use [1] instead of [0].
WITH XMLNAMESPACES(default 'http://schemas.datacontract.org/2004/07/My.Name.Space')
SELECT RequestParameters.value('(/RequestParameters/Data/UserGuid)[1]', 'uniqueidentifier') as UserGuid
FROM Requests;
SQL Fiddle
declare #XML xml
set #XML = "<RequestParameters xmlns="http://schemas.datacontract.org/2004/07/My.Name.Space" xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/" z:Id="1">
<Data z:Id="2" i:type="CheckoutRequest">
<UserGuid>7ec38c44-5aa6-49e6-9fc7-25e9028f2148</UserGuid>
<DefaultData i:nil="true" />
</Data>
</RequestParameters>"
select #XML.value('(/RequestParameters/Data /UserGuid)[1]', 'varchar')
'