SQL- fetch value from XML parent node (separately) - sql

Question

In my below Query it's return all the recode set as a XML into a single variable.But i need all the parent node values into separate while loop.Just run the below query:
---------Just Declare the temp Table -------------------------------------------------
IF OBJECT_ID('tempdb.dbo.##TestTable','U')IS NOT NULL DROP TABLE ##TestTable
CREATE TABLE ##TestTable(id int,Uname nvarchar(max),Uaddress nvarchar(max))
INSERT INTO ##TestTable values (1,'abc','NY')
INSERT INTO ##TestTable values (2,'def','WD')
INSERT INTO ##TestTable values (3,'','KL')
DECLARE #XML XML
DECLARE #WhereClause nvarchar(max)
DECLARE #CountVal int
SELECT #CountVal=count(*) from ##TestTable
SET #XML= (SELECT * FROM ##TestTable FOR XML PATH('ParentNode'), ELEMENTS XSINIL)
SELECT #XML
;with cte as
( select xr.value('fn:local-name(.)','nvarchar(max)') name, xr.value('.','nvarchar(max)') val from #xml.nodes('//.') xq(xr)
where xr.value('fn:local-name(.)','nvarchar(max)')<>''
)
SELECT #WhereClause= STUFF((select ' and ' + name + '='''+val+'''' from cte for xml path('')),1,4,'')
SELECT #WhereClause
WHILE (#CountVal>0)
BEGIN
SELECT #WhereClause
SET #CountVal=#CountVal-1
END
IF OBJECT_ID('tempdb.dbo.##TestTable','U')IS NOT NULL DROP TABLE ##TestTable
Current sample XML(in #XML):
<ParentNode xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><id>1</id><Uname>abc</Uname><Uaddress>NY</Uaddress></ParentNode><ParentNode xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><id>2</id><Uname>def</Uname><Uaddress>WD</Uaddress></ParentNode><ParentNode xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><id>3</id><Uname /><Uaddress>KL</Uaddress></ParentNode>
Current the output of #WhereClause is (all into in a single #WhereClause variable):
ParentNode='1abcNY' and id='1' and Uname='abc' and Uaddress='NY' and ParentNode='2defWD' and id='2' and Uname='def' and Uaddress='WD' and ParentNode='3KL' and id='3' and Uname='' and Uaddress='KL'
But my Expected output is:
Firstly(in #WhereClause): id='1' and Uname='abc' and Uaddress='NY'
Secondly(in #WhereClause):id='2' and Uname='def' and Uaddress='WD'
Thirdly(in #WhereClause):id='3' and Uname='' and Uaddress='KL'
.
.
How i get it. Thanks in advance.

Answer 1

Try this:
declare #WhereClause nvarchar(max)
declare #CountVal int
select #CountVal=count(*)
from ##TestTable
while #CountVal>0
begin
select #WhereClause =
(
select ' and '+T.N.value('local-name(.)', 'nvarchar(max)')+'='+T.N.value('.', 'nvarchar(max)')
from (
select *
from ##TestTable
where id = #CountVal
for xml path(''), type
) as C(X)
cross apply C.X.nodes('/*') as T(N)
for xml path(''), type
).value('substring((./text())[1], 6)', 'nvarchar(max)')
select #WhereClause
set #CountVal=#CountVal-1
end

Answer 2

seem to be late and having missunderstood, that woul habe been my approach
DECLARE #XML XML
DECLARE #WhereClause nvarchar(max)
DECLARE #CountVal int
SELECT #CountVal=count(*) from ##TestTable
SET #XML= (SELECT * FROM ##TestTable FOR XML PATH('ParentNode'), ELEMENTS XSINIL)
SELECT #XML
;with cte as
( select xr.value('fn:local-name(.)','nvarchar(max)') name, xr.value('.','nvarchar(max)') val from #xml.nodes('//.') xq(xr)
where xr.value('fn:local-name(.)','nvarchar(max)')<>'' and xr.value('fn:local-name(.)','nvarchar(max)')<>'ParentNode'
)
SELECT #WhereClause= SubString((select Case when Name ='id' then CHAR(10) +''+ name + '='''+val+'''' else ' and ' + name + '='''+val+'''' end from cte for xml path('')),2,100000000)
Print #WhereClause