XQuery and Node Ids

问题:

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)

回答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')

回答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)