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Delete specific node from XML column


Delete specific node from XML column

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thbaig
thbaig
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TABLE tblProduct
ProductId int
Productname varchar(20)

TABLE tblQuantityP
QuantityPId
Quantity int
Price int
ProductId XML

DATA IN tblProduct
ProductId ProductName
1 Prod1
2 Prod2
3 Prod3
4 Prod4
5 Prod5
6 Prod6

DATA IN tblQuantityP
QuantityPId Quantity Price ProductId
1 12 12 <itemids> <itemid>1</itemid> <itemid>2</itemid> <itemid>3</itemid></itemids>
2 11 21 <itemids> <itemid>2</itemid> <itemid>5</itemid> <itemid>6</itemid></itemids>
3 11 11 <itemids> <itemid>222</itemid> <itemid>5</itemid> <itemid>6</itemid></itemids>
4 134 11 <itemids> <itemid>2</itemid> <itemid>5</itemid> <itemid>6</itemid></itemids>
5 112 11 <itemids> <itemid>2</itemid> <itemid>5</itemid> <itemid>6</itemid></itemids>

Now I can JOIN XML COLUMN TO mother TABLE TO GET DATA AS following . (suggest IF SOME more optimized way: Not real question)
SELECT qp.QuantityPId ,
Prod.ProductId ,
Prod.ProductName
FROM dbo.tblQuantityP qp
CROSS APPLY ProductId.nodes('itemids/itemid') AS xmlitems ( itemid )
JOIN dbo.tblProduct Prod ON Prod.ProductId = xmlitems.ProductId.value('.',
'int');

My Question is can I DELETE DATA FROM tblQuantityP.ProductId in a way IF parent TABLE has NOT record against it ?
e.g. Prod1 with ProductId 1 removed from tblProduct, can I DELETE ONly ProductId 1 FROM ALL occurance IN tblQuantityP.ProductId?
Bhuvnesh
Bhuvnesh
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thbaig1 (1/23/2013)
can I DELETE DATA FROM tblQuantityP.ProductId in a way IF parent TABLE has NOT record against it ?
e.g. Prod1 with ProductId 1 removed from tblProduct, can I DELETE ONly ProductId 1 FROM ALL occurance IN tblQuantityP.ProductId?


Something like this ?

delete p from tblQuantityP Where exists (select 2 from tblProduct t where t.ProductId = p.ProductId and p.ProductId = 1)



-------Bhuvnesh----------
I work only to learn Sql Server...though my company pays me for getting their stuff done;-)
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