Question

sql server 2008 query multiple nodes

Asked by: raphil

I am pretty new to xml in sql server.  I have a table with an xml cloumn.  
One of the nodes in the xml is a list of nodes and contains a value that I need to query and retrieve.  I need to retrieve each value for each node as a separate rowset.
Below is a sample xml and the query I am trying to execute to retrieve the value.
No matter what I try the column is always null.
Can you help me determine what is not correct?

declare @x xml
set @x = '<Request xmlns="http://schemas.datacontract.org/2004/07/OurCompany.Utilities.AccountAdmin.DataContract" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  <AdditionalInfo i:nil="true" />
  <Customer>
    <Accounts>
      <Account>
        <AccountAlias i:nil="true" />
        <AccountContactInfo>
          <AccountPhones>
            <Phone>
              <Extension i:nil="true" />
              <Npa>945</Npa>
              <Nxx>985</Nxx>
              <PhoneTypeId>W</PhoneTypeId>
              <Station>5986</Station>
            </Phone>
          </AccountPhones>
          <Emails i:nil="true" />
          <SnailMailAddresses>
            <SnailMailAddress>
              <Address1>8 Ronald Dr</Address1>
              <Address2 i:nil="true" />
              <Address3 i:nil="true" />
              <AddressTypeId>S</AddressTypeId>
              <City>Spring Hill</City>
              <CountryCode>USA</CountryCode>
              <IsoZone i:nil="true" />
              <PostalCode>10990</PostalCode>
              <PostalCodeExtension />
              <State>NY</State>
            </SnailMailAddress>
          </SnailMailAddresses>
        </AccountContactInfo>
        <AccountId i:nil="true" />
        <AccountType>C</AccountType>
        <CompanyName i:nil="true" />
        <CustomerId i:nil="true" />
        <FName>Mark</FName>
        <LName>Corporation</LName>
        <MName />
        <Services>
          <AccountService>
            <AccountServiceId i:nil="true" />
            <BudgetBilling i:nil="true" />
            <ParentAccountId>123456789</ParentAccountId>
            <ServiceContracts>
              <AccountServiceContract>
                <AccountServiceContractComissions>
                  <AccountServiceContractComission>
                    <AgentCommission>0.054</AgentCommission>
                    <CommissionType i:nil="true" />
                    <SalesAgentId>HUY</SalesAgentId>
                  </AccountServiceContractComission>
                </AccountServiceContractComissions>
                <AnnualVolume i:nil="true" />
                <CommissionType />
                <GrossMargin i:nil="true" />
                <ParentSalesAgentId>ASMM</ParentSalesAgentId>
                <Product>
                  <ProductComponents>
                    <AspComponent>
                      <ProductDefinitionId>1</ProductDefinitionId>
                      <Rate>1.14</Rate>
                    </AspComponent>
                  </ProductComponents>
                  <ProductId>1</ProductId>
                </Product>
                <Term>57</Term>
                <TermVolume i:nil="true" />
              </AccountServiceContract>
            </ServiceContracts>
            <ServiceId>1</ServiceId>
            <TaxExempt i:nil="true" />
          </AccountService>
        </Services>
        <TaxId i:nil="true" />
      </Account>
      <Account>
        <AccountAlias i:nil="true" />
        <AccountContactInfo>
          <AccountPhones>
            <Phone>
              <Extension i:nil="true" />
              <Npa>777</Npa>
              <Nxx>777</Nxx>
              <PhoneTypeId>W</PhoneTypeId>
              <Station>7777</Station>
            </Phone>
          </AccountPhones>
          <Emails i:nil="true" />
          <SnailMailAddresses>
            <SnailMailAddress>
              <Address1>4 Clay Dr</Address1>
              <Address2 i:nil="true" />
              <Address3 i:nil="true" />
              <AddressTypeId>S</AddressTypeId>
              <City>River Valley</City>
              <CountryCode>USA</CountryCode>
              <IsoZone i:nil="true" />
              <PostalCode>14587</PostalCode>
              <PostalCodeExtension />
              <State>NY</State>
            </SnailMailAddress>
          </SnailMailAddresses>
        </AccountContactInfo>
        <AccountId i:nil="true" />
        <AccountType>C</AccountType>
        <CompanyName i:nil="true" />
        <CustomerId i:nil="true" />
        <FName>Microsoft</FName>
        <LName>Corporation</LName>
        <MName />
        <Services>
          <AccountService>
            <AccountServiceId i:nil="true" />
            <ParentAccountId>987654321</ParentAccountId>
            <ServiceContracts>
              <AccountServiceContract>
                <AccountServiceContractComissions>
                  <AccountServiceContractComission>
                    <AgentCommission>0.054</AgentCommission>
                    <CommissionType i:nil="true" />
                    <SalesAgentId>HUY</SalesAgentId>
                  </AccountServiceContractComission>
                </AccountServiceContractComissions>
                <AnnualVolume i:nil="true" />
                <CommissionType />
                <GrossMargin i:nil="true" />
                <ParentSalesAgentId>REW</ParentSalesAgentId>
                <Product>
                  <ProductComponents>
                    <AspComponent>
                      <ProductDefinitionId>1</ProductDefinitionId>
                      <Rate>1.14</Rate>
                    </AspComponent>
                  </ProductComponents>
                  <ProductId>1</ProductId>
                </Product>
                <Term>57</Term>
                <TermVolume i:nil="true" />
              </AccountServiceContract>
            </ServiceContracts>
            <ServiceId>1</ServiceId>
            <TaxExempt i:nil="true" />
          </AccountService>
        </Services>
        <TaxId i:nil="true" />
      </Account>
    </Accounts>
    <CompanyName i:nil="true" />
    <CustomerContactInfo>
      <Emails i:nil="true" />
      <SnailMailAddresses>
        <SnailMailAddress>
          <Address1>4 Clay St</Address1>
          <Address2 i:nil="true" />
          <Address3 i:nil="true" />
          <AddressTypeId>B</AddressTypeId>
          <City>Warwick</City>
          <CountryCode>USA</CountryCode>
          <IsoZone i:nil="true" />
          <PostalCode>15784</PostalCode>
          <PostalCodeExtension />
          <State>NY</State>
        </SnailMailAddress>
      </SnailMailAddresses>
    </CustomerContactInfo>
    <CustomerId i:nil="true" />
    <FName>General</FName>
    <LName>Electric</LName>
    <MName />
  </Customer>
  <RequestId />
</Request>' 
select account_service.query('.'),
       account_service.query('//ParentAccountId')
from @x.nodes('declare default element namespace "http://schemas.datacontract.org/2004/07/OurCompany.Utilities.AccountAdmin.DataContract";
			//Request/Customer/Accounts/Account/Services/AccountService') as T(account_service)

                                  
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Asked On
2009-11-03 at 15:14:32ID24869295
Tags

sql server

,

xml

,

nodes

Topics

SQL Server 2005

,

SQL Server 2008

,

Extensible Markup Language (XML)

Participating Experts
1
Points
250
Comments
6

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Answers

 

by: brejkPosted on 2009-11-03 at 22:29:46ID: 25736906

Try another way (see code snippet).

;with xmlnamespaces (
  default 'http://schemas.datacontract.org/2004/07/OurCompany.Utilities.AccountAdmin.DataContract',
  'http://www.w3.org/2001/XMLSchema-instance' as i
)
select account_service.query('.'),
       account_service.value('(ParentAccountId/text())[1]','int')
from @x.nodes('/Request/Customer/Accounts/Account/Services/AccountService') as T(account_service)

                                              
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by: raphilPosted on 2009-11-04 at 06:32:38ID: 25739613

Perfect that works as long as it is in a variable.  However when I save the xml into a table (in an xml column) I can't retrieve it.  What do I need to do to select it from a table?  I will also want to select the customer name (first and last) for each AccountService together with the ParentAccountId.  How can I do that when there are multiple AccountServices?  (I tried playing with Cross Apply, but I can't get it to work.)

Thanks for this solution.  Can you explain it or point to a web page that can?

 

by: brejkPosted on 2009-11-04 at 06:41:45ID: 25739712

Here is a website on XMLNAMESPACES clause: http://msdn.microsoft.com/en-us/library/ms177400.aspx.

And below is a sample code to perform the same on a table:

 

by: brejkPosted on 2009-11-04 at 06:42:08ID: 25739719

Sorry, the code did not attach :-)

if object_id('tempdb.dbo.#temp') is not null
  drop table #temp;
create table #temp (x xml);
insert into #temp (x)
select '<Request xmlns="http://schemas.datacontract.org/2004/07/OurCompany.Utilities.AccountAdmin.DataContract" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  <AdditionalInfo i:nil="true" />
  <Customer>
    <Accounts>
      <Account>
        <AccountAlias i:nil="true" />
        <AccountContactInfo>
          <AccountPhones>
            <Phone>
              <Extension i:nil="true" />
              <Npa>945</Npa>
              <Nxx>985</Nxx>
              <PhoneTypeId>W</PhoneTypeId>
              <Station>5986</Station>
            </Phone>
          </AccountPhones>
          <Emails i:nil="true" />
          <SnailMailAddresses>
            <SnailMailAddress>
              <Address1>8 Ronald Dr</Address1>
              <Address2 i:nil="true" />
              <Address3 i:nil="true" />
              <AddressTypeId>S</AddressTypeId>
              <City>Spring Hill</City>
              <CountryCode>USA</CountryCode>
              <IsoZone i:nil="true" />
              <PostalCode>10990</PostalCode>
              <PostalCodeExtension />
              <State>NY</State>
            </SnailMailAddress>
          </SnailMailAddresses>
        </AccountContactInfo>
        <AccountId i:nil="true" />
        <AccountType>C</AccountType>
        <CompanyName i:nil="true" />
        <CustomerId i:nil="true" />
        <FName>Mark</FName>
        <LName>Corporation</LName>
        <MName />
        <Services>
          <AccountService>
            <AccountServiceId i:nil="true" />
            <BudgetBilling i:nil="true" />
            <ParentAccountId>123456789</ParentAccountId>
            <ServiceContracts>
              <AccountServiceContract>
                <AccountServiceContractComissions>
                  <AccountServiceContractComission>
                    <AgentCommission>0.054</AgentCommission>
                    <CommissionType i:nil="true" />
                    <SalesAgentId>HUY</SalesAgentId>
                  </AccountServiceContractComission>
                </AccountServiceContractComissions>
                <AnnualVolume i:nil="true" />
                <CommissionType />
                <GrossMargin i:nil="true" />
                <ParentSalesAgentId>ASMM</ParentSalesAgentId>
                <Product>
                  <ProductComponents>
                    <AspComponent>
                      <ProductDefinitionId>1</ProductDefinitionId>
                      <Rate>1.14</Rate>
                    </AspComponent>
                  </ProductComponents>
                  <ProductId>1</ProductId>
                </Product>
                <Term>57</Term>
                <TermVolume i:nil="true" />
              </AccountServiceContract>
            </ServiceContracts>
            <ServiceId>1</ServiceId>
            <TaxExempt i:nil="true" />
          </AccountService>
        </Services>
        <TaxId i:nil="true" />
      </Account>
      <Account>
        <AccountAlias i:nil="true" />
        <AccountContactInfo>
          <AccountPhones>
            <Phone>
              <Extension i:nil="true" />
              <Npa>777</Npa>
              <Nxx>777</Nxx>
              <PhoneTypeId>W</PhoneTypeId>
              <Station>7777</Station>
            </Phone>
          </AccountPhones>
          <Emails i:nil="true" />
          <SnailMailAddresses>
            <SnailMailAddress>
              <Address1>4 Clay Dr</Address1>
              <Address2 i:nil="true" />
              <Address3 i:nil="true" />
              <AddressTypeId>S</AddressTypeId>
              <City>River Valley</City>
              <CountryCode>USA</CountryCode>
              <IsoZone i:nil="true" />
              <PostalCode>14587</PostalCode>
              <PostalCodeExtension />
              <State>NY</State>
            </SnailMailAddress>
          </SnailMailAddresses>
        </AccountContactInfo>
        <AccountId i:nil="true" />
        <AccountType>C</AccountType>
        <CompanyName i:nil="true" />
        <CustomerId i:nil="true" />
        <FName>Microsoft</FName>
        <LName>Corporation</LName>
        <MName />
        <Services>
          <AccountService>
            <AccountServiceId i:nil="true" />
            <ParentAccountId>987654321</ParentAccountId>
            <ServiceContracts>
              <AccountServiceContract>
                <AccountServiceContractComissions>
                  <AccountServiceContractComission>
                    <AgentCommission>0.054</AgentCommission>
                    <CommissionType i:nil="true" />
                    <SalesAgentId>HUY</SalesAgentId>
                  </AccountServiceContractComission>
                </AccountServiceContractComissions>
                <AnnualVolume i:nil="true" />
                <CommissionType />
                <GrossMargin i:nil="true" />
                <ParentSalesAgentId>REW</ParentSalesAgentId>
                <Product>
                  <ProductComponents>
                    <AspComponent>
                      <ProductDefinitionId>1</ProductDefinitionId>
                      <Rate>1.14</Rate>
                    </AspComponent>
                  </ProductComponents>
                  <ProductId>1</ProductId>
                </Product>
                <Term>57</Term>
                <TermVolume i:nil="true" />
              </AccountServiceContract>
            </ServiceContracts>
            <ServiceId>1</ServiceId>
            <TaxExempt i:nil="true" />
          </AccountService>
        </Services>
        <TaxId i:nil="true" />
      </Account>
    </Accounts>
    <CompanyName i:nil="true" />
    <CustomerContactInfo>
      <Emails i:nil="true" />
      <SnailMailAddresses>
        <SnailMailAddress>
          <Address1>4 Clay St</Address1>
          <Address2 i:nil="true" />
          <Address3 i:nil="true" />
          <AddressTypeId>B</AddressTypeId>
          <City>Warwick</City>
          <CountryCode>USA</CountryCode>
          <IsoZone i:nil="true" />
          <PostalCode>15784</PostalCode>
          <PostalCodeExtension />
          <State>NY</State>
        </SnailMailAddress>
      </SnailMailAddresses>
    </CustomerContactInfo>
    <CustomerId i:nil="true" />
    <FName>General</FName>
    <LName>Electric</LName>
    <MName />
  </Customer>
  <RequestId />
</Request>' 
 
;with xmlnamespaces (
  default 'http://schemas.datacontract.org/2004/07/OurCompany.Utilities.AccountAdmin.DataContract',
  'http://www.w3.org/2001/XMLSchema-instance' as i
)
select account_service.query('.'),
       account_service.value('(ParentAccountId/text())[1]','int')
from #temp tmp
cross apply tmp.x.nodes('/Request/Customer/Accounts/Account/Services/AccountService') as T(account_service)
                                              
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by: raphilPosted on 2009-11-04 at 06:58:20ID: 25739935

Thank you for the quick reply, but this is not working for me.
Below is the query I am running and it is returning blank eventhough that xml is in request_xml for id 79755 in my db.


;with xmlnamespaces (
  default 'http://schemas.datacontract.org/2004/07/OurCompany.Utilities.AccountAdmin.DataContract',
  'http://www.w3.org/2001/XMLSchema-instance' as i
)
select account_service.query('.'),
       account_service.value('(ParentAccountId/text())[1]','varchar(256)') 
		from transaction_request
		
cross apply request_xml.nodes('/Request/Customer/Accounts/Account/Services/AccountService') as T(account_service)
where id = 79755 

                                              
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by: raphilPosted on 2009-11-04 at 08:01:54ID: 25740658

I got it working.

Thank you very much.  I had the wrong namespace in my query.

20120131-EE-VQP-002

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