XQuery and Node Ids - sql

Question

I have this variable:
declare #xmlDoc XML
it has the following xml stored in it:
<?xml version="1.0" encoding="utf-8"?>
<NewDataSet>
<Table1>
<Sharedparam>shared</Sharedparam>
<Antoher>sahre</Antoher>
<RandomParam2>Good stuff</RandomParam2>
<MoreParam>and more</MoreParam>
<ResultsParam>2</ResultsParam>
</Table1>
<Table1>
<RandomParam2>do you</RandomParam2>
<MoreParam>think</MoreParam>
<ResultsParam>2</ResultsParam>
</Table1>
<Table1>
<Sharedparam>Last</Sharedparam>
<Antoher> Set </Antoher>
<RandomParam2> of </RandomParam2>
<MoreParam>values</MoreParam>
<ResultsParam>are here</ResultsParam>
</Table1>
<Table1 />
</NewDataSet>
I have this query that I am using to get the data:
declare #xmlDoc XML
set #xmlDoc = '' -- Stack Overflow could not handle the xml all on one line.
SELECT -- Param 1
TBL.SParam.value('local-name((*)[1])', 'varchar(50)') as Param1Name,
TBL.SParam.value('(*)[1]', 'varchar(100)') as Param1Value,
-- Param2
TBL.SParam.value('local-name((*)[2])', 'varchar(50)') as Param2Name,
TBL.SParam.value('(*)[2]', 'varchar(100)') as Param2Value,
-- Param3
TBL.SParam.value('local-name((*)[3])', 'varchar(50)') as Param3Name,
TBL.SParam.value('(*)[3]', 'varchar(100)') as Param3Value,
-- Param 4
TBL.SParam.value('local-name((*)[4])', 'varchar(50)') as Param4Name,
TBL.SParam.value('(*)[4]', 'varchar(100)') as Param4Value,
-- Param 5
TBL.SParam.value('local-name((*)[5])', 'varchar(50)') as Param5Name,
TBL.SParam.value('(*)[5]', 'varchar(100)') as Param5Value
FROM #xmldoc.nodes('/NewDataSet/Table1') AS TBL(SParam)
I need a way to add to my results the order that they came from the xml file. (Which was the first instance of Table1, then the second....).
For reasons of SQL table variable limitations, I can't use an identity column to keep this straight. (For other reasons, I don't want to use a temporary table.)
I am hoping that there is a cool SQL XML function that will return some kind of internally assigned Node ID. (Or some other similar manner of ordering.)
Note, I do not control this XML Structure (I am a reader only) so I cannot make changes to add in an ID attribute.
Any advice would be great!
EDIT/Update:
I would really like to have this data like this:
1 | SharedParam | shared
1 | Antoher | sahre
1 | RandomParam2 | Good stuff
1 | MoreParam | and more
1 | ResultsParam | and more
2 | RandomParam2 | do you
2 | MoreParam | think
2 | ResultsParam | 2
3 | Sharedparam | Last
3 | Antoher | Set
.
.
.
But I am coming up short. I can get it into columns (more or less), but I don't know how to do the numbering. If you have any ideas I would love to hear them.
EDIT:
I figured out the query to do this (with some help from the internet). It looks like this:
SELECT TBL.SParam.value('local-name(.)[1]', 'varchar(50)') as ParamName,
TBL.SParam.value('(.)[1]', 'varchar(50)') ParamValue,
TBL.SParam.value('for $s in . return count(../*[. << $s]) + 1', 'int') ParamPosition,
TBL.SParam.value('for $s in . return count(../../*[. << $s]) - 1', 'int') ParamIteration
FROM #xmldoc.nodes('/NewDataSet/Table1/*') AS TBL(SParam)

Answer 1

You can use a number table and position()
SELECT N.Number as ID,
-- Param 1
TBL.SParam.value('local-name((*)[1])', 'varchar(50)') as Param1Name,
TBL.SParam.value('(*)[1]', 'varchar(100)') as Param1Value,
-- Param2
TBL.SParam.value('local-name((*)[2])', 'varchar(50)') as Param2Name,
TBL.SParam.value('(*)[2]', 'varchar(100)') as Param2Value,
-- Param3
TBL.SParam.value('local-name((*)[3])', 'varchar(50)') as Param3Name,
TBL.SParam.value('(*)[3]', 'varchar(100)') as Param3Value,
-- Param 4
TBL.SParam.value('local-name((*)[4])', 'varchar(50)') as Param4Name,
TBL.SParam.value('(*)[4]', 'varchar(100)') as Param4Value,
-- Param 5
TBL.SParam.value('local-name((*)[5])', 'varchar(50)') as Param5Name,
TBL.SParam.value('(*)[5]', 'varchar(100)') as Param5Value
FROM master..spt_values as N
cross apply #xmldoc.nodes('/NewDataSet/Table1[position()=sql:column("N.Number")]') AS TBL(SParam)
where N.type = 'P' and
N.number between 1 and #xmlDoc.value('count(/NewDataSet/Table1)', 'int')

Answer 2

Take a look at this connect request to Fully support position() in xquery The requestor offers a couple of work arounds that might be usful to you
Based on the second workaround I wrote the following
SELECT
p.number,
TBL.SParam.value('local-name((*)[1])', 'varchar(50)') as Param1Name,
TBL.SParam.value('(*)[1]', 'varchar(100)') as Param1Value,
-- Param2
TBL.SParam.value('local-name((*)[2])', 'varchar(50)') as Param2Name,
TBL.SParam.value('(*)[2]', 'varchar(100)') as Param2Value,
-- Param3
TBL.SParam.value('local-name((*)[3])', 'varchar(50)') as Param3Name,
TBL.SParam.value('(*)[3]', 'varchar(100)') as Param3Value,
-- Param 4
TBL.SParam.value('local-name((*)[4])', 'varchar(50)') as Param4Name,
TBL.SParam.value('(*)[4]', 'varchar(100)') as Param4Value,
-- Param 5
TBL.SParam.value('local-name((*)[5])', 'varchar(50)') as Param5Name,
TBL.SParam.value('(*)[5]', 'varchar(100)') as Param5Value
FROM
master..spt_values p CROSS APPLY
#xmldoc.nodes('NewDataSet/Table1[position()=sql:column("p.number")]') AS TBL(SParam)
WHERE P.type = 'P'
Which returns the following
number Param1Name Param1Value Param2Name Param2Value Param3Name Param3Value Param4Name Param4Value Param5Name Param5Value
----------- -------------------------------------------------- ---------------------------------------------------------------------------------------------------- -------------------------------------------------- ---------------------------------------------------------------------------------------------------- -------------------------------------------------- ---------------------------------------------------------------------------------------------------- -------------------------------------------------- ---------------------------------------------------------------------------------------------------- -------------------------------------------------- ----------------------------------------------------------------------------------------------------
1 Sharedparam shared Antoher sahre RandomParam2 Good stuff MoreParam and more ResultsParam 2
2 RandomParam2 do you MoreParam think ResultsParam 2 NULL NULL
3 Sharedparam Last Antoher Set RandomParam2 of MoreParam values ResultsParam are here
4 NULL NULL NULL NULL NULL
(4 row(s) affected)