I have column of XML type.There's a xml like this
<items>
<item type="xxx"><items>
<item type="xxx"><items>
</items>
I need to delete all type attributes. I know oracle has some functions for xml manipulation, but I don't get how to delete attributes.
How would such query look like ?
Here is an example using the Oracle supplied SQL function deletexml
Acknowledgement to Jonas Lincoln as I am using his XPATH expression
SELECT deleteXML(xmltype.CREATEXML('<items>
<item type="xxx">a</item>
<item type="xxx">b</item>
</items>'),
'/items/item[#type="xxx"]/#type')
FROM dual
<items>
<item>a</item>
<item>b</item>
</items>
declare #xml as xml
set #xml = '
<items>
<item type="xxx">3</item>
<item type="xxx">4</item>
</items>'
SET #xml.modify('delete (/items/item[#type="xxx"]/#type)')
select cast(#xml as nvarchar(100))
<items>
<item>3</item>
<item>4</item>
</items>
Related
I have a database that has a table Parameters_XML with columns.
id, application, parameter_nr flag, value
The parameter_nr is for example 1 and the value for that parameter is the following:
<Root>
<Row>
<Item id="341" flags="1">
<Str>2</Str>
</Item>
<Item id="342" flags="1">
<Str>10</Str>
</Item>
<Item id="2196" flags="1">
<Str>7REPJ1</Str>
</Item>
</Row>
</Root>
I need to retrieve the values for all the applications where the item is 341, 342 and 2196.
Eg: for the application 1 the value for the item 341 is 2 and so on.
I have written the following query:
SELECT cast (value as XML).value('data(/Root/Row/Item[#id="431"],')
FROM Parameters_Xml x
WHERE parameter_nr = 1
I get the following error:
Msg 174, Level 15, State 1, Line 1
The value function requires 2 argument(s).
Why my query is not valid?
Try someting like this:
SELECT
CAST(x.Value AS XML).value('(/Root/Row/Item[#id="341"]/Str)[1]', 'nvarchar(100)')
FROM dbo.Parameters_Xml x
WHERE parameter_nr = 1
You're telling SQL Server to go find the <Item> node (under <Root> / <Row>) with and id=341 (that what I'm assuming - your value in the question doesn't even exist) and then get the first <Str> node under <Item> and return that value
Also: why do you need CAST(x.Value as XML) - if that column contains only XML - why isn't it defined with datatype XML to begin with? If you have this, you don't need any CAST ...
DECLARE #str XML;
SET #str = '<Root>
<Row>
<Item id="341" flags="1">
<Str>2</Str>
</Item>
<Item id="342" flags="1">
<Str>10</Str>
</Item>
<Item id="2196" flags="1">
<Str>7REPJ1</Str>
</Item>
</Row>
</Root>'
-- if you want specific values then
SELECT
xmlData.Col.value('#id','varchar(max)') Item
,xmlData.Col.value('(Str/text())[1]','varchar(max)') Value
FROM #str.nodes('//Root/Row/Item') xmlData(Col)
where xmlData.Col.value('#id','varchar(max)') = 342
--if you want all values then
SELECT
xmlData.Col.value('#id','varchar(max)') Item
,xmlData.Col.value('(Str/text())[1]','varchar(max)') Value
FROM #str.nodes('//Root/Row/Item') xmlData(Col)
--where xmlData.Col.value('#id','varchar(max)') = 342
Edit After CommentIf i query my db: select * from parameters_xml where parameter_nr = 1 i will receive over 10000 rows, each row is like the following: Id app param value 1 1 1 11 I need for all the 10000 apps to retrieve the item id and the value from the XML value - like you did for my eg.
-- declare temp table
declare #temp table
(val xml)
insert into #temp values ('<Root>
<Row>
<Item id="341" flags="1">
<Str>2</Str>
</Item>
<Item id="342" flags="1">
<Str>10</Str>
</Item>
<Item id="2196" flags="1">
<Str>7REPJ1</Str>
</Item>
</Row>
</Root>')
insert into #temp values ('<Root>
<Row>
<Item id="3411" flags="1">
<Str>21</Str>
</Item>
<Item id="3421" flags="1">
<Str>101</Str>
</Item>
<Item id="21961" flags="1">
<Str>7REPJ11</Str>
</Item>
</Row>
</Root>')
-- QUERY
SELECT
xmlData.Col.value('#id','varchar(max)') Item
,xmlData.Col.value('(Str/text())[1]','varchar(max)') Value
FROM #temp AS T
outer apply T.val.nodes('/Root/Row/Item') as xmlData(Col)
Try this:
select cast (value as
XML).value('data(/Root/Row/Item[#id="431"]','nvarchar(max)')
data type is 2nd parameter.
I have the following XML:
<items>
<item value="1"/>
<item value="2"/>
<item value="4"/>
</items>
and I would like to select all item value and concatenate them like this - see below - with XQuery :
1.2.4
Any ideas?
Thanks in advance.
There are two parts to your question:
getting values out of xml
concatenating multiple values together
The second part of your question has been covered off very nicely in the answers to this question.
In terms of getting the values out of your xml, try the below:
-- Your xml variable
DECLARE #xml AS XML = '<items>
<item value="1"/>
<item value="2"/>
<item value="4"/>
</items>'
-- Example of selecting the values into rows
SELECT
item.value('.', 'int')
FROM
#xml.nodes('/items/item/#value') as T1(item)
-- Use your favourite/'best for your circumstance' method of
-- concatenating the rows into one string
-- see https://stackoverflow.com/q/194852/1208914 for other ways
SELECT
item.value('.', 'varchar(50)') + ' ' as 'data()'
FROM
#xml.nodes('/items/item/#value') as T1(item)
for xml path('')
I've put the code above into a sql fiddle that you can access and play with here: http://sqlfiddle.com/#!6/d41d8/18144/0
Using XQuery you can simply select the values using XPath and join them together using a dot.
string-join(/items/item/#value, '.')
How would I specify the following XML Hierarchy into readable columns in Microsoft SQL?
<transaction id=1>
<item id=1>
<price>1</price>
</item>
<item id=2>
<price>1</price>
</item>
</transaction>
<transaction>
<item id=1>
<price>1</price>
</item>
</transaction>
for instance
select
x.i.value('(????)','Varchar(max)') [TransId]
x.i.value('(????)','Varchar(max)') [ItemId]
x.i.value('(????)','Varchar(max)') [PriceId]
from #xml.nodes('/transaction') x(i)
Thanks in advance.
Attribute values must always appear in quotation marks in XML.
Not sure about the desired output. An example would be:
declare #xml xml
Select #xml=
'<transaction id="1">
<item id="1">
<price>1</price>
</item>
<item id="2">
<price>2</price>
</item>
</transaction>
<transaction>
<item id="1">
<price>3</price>
</item>
</transaction>'
SELECT
y.value('../#id','int') as TransactionID,
y.value('#id','int') as ItemID,
y.value('(./price/text())[1]', 'Varchar(max)') as Price
FROM #xml.nodes('/transaction/item') as x(y)
order by TransactionID,ItemID
with the output:
NULL 1 3
1 1 1
1 2 2
Actually usually it's faster to shred XML from parent to child using apply, like this:
select
t.c.value('#id','int') as TransId,
i.c.value('#id','int') as ItemId,
i.c.value('(price/text())[1]', 'int') as PriceId
from #xml.nodes('transaction') as t(c)
outer apply t.c.nodes('item') as i(c)
order by TransId, ItemID
sql fiddle demo
I have the following XML:
<help>
<item field="field1" help="helptext" />
<item field="field2" help="helptext" />
<item field="field3" help="helptext" />
</help>
I have this stored in an XML DataType in SQL server and would like to pull out the fields and help text seperately. I.e a results set similar to:
| field1 | helptext |
| field2 | helptext |
| field3 | helptext |
Does anybody know how to achieve this?
Kindest Regards,
Adam
DECLARE #xml AS XML = '<help>
<item field="field1" help="helptext" />
<item field="field2" help="helptext" />
<item field="field3" help="helptext" />
</help>'
select c.value('#field', 'varchar(max)') field, c.value('#help', 'varchar(max)') help
from #xml.nodes('/help/item') T(c);
To achieve the same when xml data is in a table field use:
SELECT c.value('#field', 'varchar(max)') field, c.value('#help', 'varchar(max)') help
FROM MyTable A CROSS APPLY A.MyXmlField.nodes('/help/item') T(c)
Where MyTable is the table with field MyXmlField containing xml data.
See if following helps:
DECLARE #processedXmlDoc int
DECLARE #inputDoc varchar(1000)
EXEC sp_xml_preparedocument #processedXmlDoc OUTPUT, #inputDoc
SELECT *
FROM OPENXML (#processedXmlDoc , '/help/item',1)
WITH (field varchar(20) 'field',
help varchar(20) 'helpText')
EXECUTE sp_xml_removedocument #idoc
Hope that helps.
Try something like this:
DECLARE #input XML = '<help>
<item field="field1" help="helptext" />
<item field="field2" help="helptext" />
<item field="field3" help="helptext" />
</help>'
SELECT
Field = Item.value('#field', 'varchar(25)'),
HELP = Item.value('#help', 'varchar(50)')
FROM
#input.nodes('/help/item') AS XTbl(Item)
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>