sql - SQL: XML nodes(): 同一のクエリ: 異なる結果

Question

3 つの一見同一の XML nodes() クエリですが、最初のクエリは列の最初の行で異なる結果を返します: Location1、Location2、Location3
なぜ違うのでしょうか?
前もって感謝します。

declare @xml xml
set @xml =
'<root>
  <Location1 LocationID="10">
     <step1>apple</step1>
     <step2>banana</step2>
  </Location1>
  <Location2 LocationID="20">
     <step1>carrot</step1>
     <step2>donut</step2>
  </Location2>
  <Location3 LocationID="30">
     <step1>egg</step1>
     <step2>fry</step2>
  </Location3>
</root>'

declare @SQL nvarchar(max) = ''
declare @Col nvarchar(max) = ', N.value(''[COLNAME][1]'', ''varchar(100)'') as [COLNAME]' 
select @SQL = @SQL + replace(@Col, '[COLNAME]', N.value('local-name(.)', 'sysname'))
from @XML.nodes('//*') as T(N)
set @SQL = 'select '+stuff(@SQL, 1, 2, '')+' from @XML.nodes(''//*'') as T(N)' 
exec sp_executesql @SQL, N'@XML xml', @XML

declare @sql2 nvarchar(max) = ''
set @sql2 =
'select
n.value(''root[1]'',''varchar(100)'') as root,
n.value(''location1[1]'',''varchar(100)'') as location1,
n.value(''step1[1]'',''varchar(100)'') as step1,
n.value(''step2[1]'',''varchar(100)'') as step2,
n.value(''location2[1]'',''varchar(100)'') as location2,
n.value(''step1[1]'',''varchar(100)'') as step1,
n.value(''step2[1]'',''varchar(100)'') as step2,
n.value(''location3[1]'',''varchar(100)'') as location3,
n.value(''step1[1]'',''varchar(100)'') as step1,
n.value(''step2[1]'',''varchar(100)'') as step2
from @xml.nodes(''//*'') as t(n)'
exec sp_executesql @SQL2, N'@XML xml', @XML

select
n.value('root[1]','varchar(100)') as root,
n.value('location1[1]','varchar(100)') as location1,
n.value('step1[1]','varchar(100)') as step1,
n.value('step2[1]','varchar(100)') as step2,
n.value('location2[1]','varchar(100)') as location2,
n.value('step1[1]','varchar(100)') as step1,
n.value('step2[1]','varchar(100)') as step2,
n.value('location3[1]','varchar(100)') as location3,
n.value('step1[1]','varchar(100)') as step1,
n.value('step2[1]','varchar(100)') as step2
from @xml.nodes('//*') as t(n)

PS: わかりました。詳細を書かずにこれを投稿することはできません. . このようなもの（うまくいけば、フォーマットが残ることを願って、画像をアップロードできませんでした）：

root      Location1      LocationID      Step1      Step2      Location2      Location3
Location1 LocationID     10
          Step1                          apple
          Step2                                     banana
Location2                20                                    LocationID
                                         carrot                Step1
                                                    donut      Step2
Location3                30                                                   LocationID
                                         egg                                  Step1
                                                    fry                       Step2

なんらかの理由で、これは SQL にとって難しい注文ですが、上記のクエリの違いの理由についてはまだ興味があります。