Xml.nodes tsql - 空值
Xml.nodes tsql - empty value
declare @xmlWithElements xml = N'
<Elements>
<Element Guid="bc7a96e1-1d8e-4339-ace0-41bf593036ee">
<TradeDocument GUID="BC7A96E1-1D8E-4339-ACE0-41BF593036EE" >
<Numerator>
<Element Value="PAR" />
<Element Value="2016" />
</Numerator>
<Items>
<Item OrdinalNumber="1" ProductId="5045" ProductCode="qq" ProductNameVersion="1" Quantity="1.0000" QuantityInBasicUnit="1.0000" UnitId="1" CurrencyId="1" ToPay="167.1000" ToPayNet="135.8500" ProductInitialPrice="175.8900" ProductInitialNetPrice="143.0000" ProductEndPrice="167.1000" ProductEndNetPrice="136.1000" CalculatedDiscountPrice="-8.7900" CalculatedDiscountNetPrice="-6.7900" CalculatedDiscountInPercentage="5.0000" CalculatedDiscountValue="-8.7900" CalculatedDiscountNetValue="-6.7900" EmpoyeeDiscountValue="0.0000" EmpoyeeDiscountNetValue="0.0000" CumulativeDiscountInPercentage="0.0000" CumulativeDiscountValue="0.0000" CumulativeDiscountNetValue="0.0000" PriceCalculationPrecision="0" HeaderPercentageDiscount="0.0000" HeaderValueDiscount="0.0000" ManualUserDiscountInPercentage="0.0000" EmployeeDiscountInPercentage="0.0000" SelectedBarcodeId="0" LotId="4165" AssistantId="3" PriceTypeId="1" BundleCode="" BundleQuantity="0.0000" Points="0" QuantityBeforeCorrection="0.0000" QuantityAfterCorrection="0.0000" PurchaseValue="0.0000" SourceOrdinalNumber="0" VATRateId="2" />
</Items>
<Payments>
<Payment NumberString="KP/2016/PKO BP/00013/" OrdinalNumber="1" PaymentFormId="4" CashBankAccountId="2" Type="1" SystemValue="167.10" CurrencyValue="167.10" CurrencyId="1" Numerator="1" Denominator="1" DocumentDate="2016-05-04 12:17:02.613" ExchangeRateDate="2016-04-29 10:05:43.297" AffectsCashRegisterBalance="true"/>
</Payments>
<VATAggregates>
<VATAggregate VATRateId="2" NetValue="135.85" GrossValue="167.10" VATValue="31.25" />
</VATAggregates>
</TradeDocument>
</Element>
</Elements>'
SELECT
Guid = XElement.XProperty.value('@Guid','uniqueidentifier'),
Data = XElement.XProperty.value('(value)[1]','nvarchar(max)')
FROM
@xmlWithElements.nodes('Elements/Element') AS XElement(XProperty)
declare @xml2 nvarchar(max) = Convert(nvarchar(max), @xmlWithElements.query('/Elements/Element/*'))
select @xml2
我有特定的 xml,我想获取每个 child(名称为 element
的元素)。
不幸的是,这个方法不起作用,我找不到任何有效的解决方案(数据 returns null)。
这段代码有什么问题?
更新
当我在数据中使用时 属性
Data = XElement.XProperty.value('.','nvarchar(max)')
我得到一个空列(不为空)
如果您 - 我希望理解正确 - 想要内部 xml 只是 原样 ,您可以试试这个:
declare @xmlWithElements xml =
N'<Elements>
<Element Guid="bc7a96e1-1d8e-4339-ace0-41bf593036ee">
<TradeDocument GUID="BC7A96E1-1D8E-4339-ACE0-41BF593036EE" >
<Numerator>
<Element Value="PAR" />
<Element Value="2016" />
</Numerator>
<Items>
<Item OrdinalNumber="1" ProductId="5045" ProductCode="qq" ProductNameVersion="1" Quantity="1.0000" QuantityInBasicUnit="1.0000" UnitId="1" CurrencyId="1" ToPay="167.1000" ToPayNet="135.8500" ProductInitialPrice="175.8900" ProductInitialNetPrice="143.0000" ProductEndPrice="167.1000" ProductEndNetPrice="136.1000" CalculatedDiscountPrice="-8.7900" CalculatedDiscountNetPrice="-6.7900" CalculatedDiscountInPercentage="5.0000" CalculatedDiscountValue="-8.7900" CalculatedDiscountNetValue="-6.7900" EmpoyeeDiscountValue="0.0000" EmpoyeeDiscountNetValue="0.0000" CumulativeDiscountInPercentage="0.0000" CumulativeDiscountValue="0.0000" CumulativeDiscountNetValue="0.0000" PriceCalculationPrecision="0" HeaderPercentageDiscount="0.0000" HeaderValueDiscount="0.0000" ManualUserDiscountInPercentage="0.0000" EmployeeDiscountInPercentage="0.0000" SelectedBarcodeId="0" LotId="4165" AssistantId="3" PriceTypeId="1" BundleCode="" BundleQuantity="0.0000" Points="0" QuantityBeforeCorrection="0.0000" QuantityAfterCorrection="0.0000" PurchaseValue="0.0000" SourceOrdinalNumber="0" VATRateId="2" />
</Items>
<Payments>
<Payment NumberString="KP/2016/PKO BP/00013/" OrdinalNumber="1" PaymentFormId="4" CashBankAccountId="2" Type="1" SystemValue="167.10" CurrencyValue="167.10" CurrencyId="1" Numerator="1" Denominator="1" DocumentDate="2016-05-04 12:17:02.613" ExchangeRateDate="2016-04-29 10:05:43.297" AffectsCashRegisterBalance="true"/>
</Payments>
<VATAggregates>
<VATAggregate VATRateId="2" NetValue="135.85" GrossValue="167.10" VATValue="31.25" />
</VATAggregates>
</TradeDocument>
</Element>
</Elements>';
SELECT Elmt.value('@Guid','uniqueidentifier') AS [Guid]
,Elmt.query('*') AS [Data]
FROM @xmlWithElements.nodes('Elements/Element') AS A(Elmt)
declare @xmlWithElements xml = N'
<Elements>
<Element Guid="bc7a96e1-1d8e-4339-ace0-41bf593036ee">
<TradeDocument GUID="BC7A96E1-1D8E-4339-ACE0-41BF593036EE" >
<Numerator>
<Element Value="PAR" />
<Element Value="2016" />
</Numerator>
<Items>
<Item OrdinalNumber="1" ProductId="5045" ProductCode="qq" ProductNameVersion="1" Quantity="1.0000" QuantityInBasicUnit="1.0000" UnitId="1" CurrencyId="1" ToPay="167.1000" ToPayNet="135.8500" ProductInitialPrice="175.8900" ProductInitialNetPrice="143.0000" ProductEndPrice="167.1000" ProductEndNetPrice="136.1000" CalculatedDiscountPrice="-8.7900" CalculatedDiscountNetPrice="-6.7900" CalculatedDiscountInPercentage="5.0000" CalculatedDiscountValue="-8.7900" CalculatedDiscountNetValue="-6.7900" EmpoyeeDiscountValue="0.0000" EmpoyeeDiscountNetValue="0.0000" CumulativeDiscountInPercentage="0.0000" CumulativeDiscountValue="0.0000" CumulativeDiscountNetValue="0.0000" PriceCalculationPrecision="0" HeaderPercentageDiscount="0.0000" HeaderValueDiscount="0.0000" ManualUserDiscountInPercentage="0.0000" EmployeeDiscountInPercentage="0.0000" SelectedBarcodeId="0" LotId="4165" AssistantId="3" PriceTypeId="1" BundleCode="" BundleQuantity="0.0000" Points="0" QuantityBeforeCorrection="0.0000" QuantityAfterCorrection="0.0000" PurchaseValue="0.0000" SourceOrdinalNumber="0" VATRateId="2" />
</Items>
<Payments>
<Payment NumberString="KP/2016/PKO BP/00013/" OrdinalNumber="1" PaymentFormId="4" CashBankAccountId="2" Type="1" SystemValue="167.10" CurrencyValue="167.10" CurrencyId="1" Numerator="1" Denominator="1" DocumentDate="2016-05-04 12:17:02.613" ExchangeRateDate="2016-04-29 10:05:43.297" AffectsCashRegisterBalance="true"/>
</Payments>
<VATAggregates>
<VATAggregate VATRateId="2" NetValue="135.85" GrossValue="167.10" VATValue="31.25" />
</VATAggregates>
</TradeDocument>
</Element>
</Elements>'
SELECT
Guid = XElement.XProperty.value('@Guid','uniqueidentifier'),
Data = XElement.XProperty.value('(value)[1]','nvarchar(max)')
FROM
@xmlWithElements.nodes('Elements/Element') AS XElement(XProperty)
declare @xml2 nvarchar(max) = Convert(nvarchar(max), @xmlWithElements.query('/Elements/Element/*'))
select @xml2
我有特定的 xml,我想获取每个 child(名称为 element
的元素)。
不幸的是,这个方法不起作用,我找不到任何有效的解决方案(数据 returns null)。
这段代码有什么问题?
更新
当我在数据中使用时 属性
Data = XElement.XProperty.value('.','nvarchar(max)')
我得到一个空列(不为空)
如果您 - 我希望理解正确 - 想要内部 xml 只是 原样 ,您可以试试这个:
declare @xmlWithElements xml =
N'<Elements>
<Element Guid="bc7a96e1-1d8e-4339-ace0-41bf593036ee">
<TradeDocument GUID="BC7A96E1-1D8E-4339-ACE0-41BF593036EE" >
<Numerator>
<Element Value="PAR" />
<Element Value="2016" />
</Numerator>
<Items>
<Item OrdinalNumber="1" ProductId="5045" ProductCode="qq" ProductNameVersion="1" Quantity="1.0000" QuantityInBasicUnit="1.0000" UnitId="1" CurrencyId="1" ToPay="167.1000" ToPayNet="135.8500" ProductInitialPrice="175.8900" ProductInitialNetPrice="143.0000" ProductEndPrice="167.1000" ProductEndNetPrice="136.1000" CalculatedDiscountPrice="-8.7900" CalculatedDiscountNetPrice="-6.7900" CalculatedDiscountInPercentage="5.0000" CalculatedDiscountValue="-8.7900" CalculatedDiscountNetValue="-6.7900" EmpoyeeDiscountValue="0.0000" EmpoyeeDiscountNetValue="0.0000" CumulativeDiscountInPercentage="0.0000" CumulativeDiscountValue="0.0000" CumulativeDiscountNetValue="0.0000" PriceCalculationPrecision="0" HeaderPercentageDiscount="0.0000" HeaderValueDiscount="0.0000" ManualUserDiscountInPercentage="0.0000" EmployeeDiscountInPercentage="0.0000" SelectedBarcodeId="0" LotId="4165" AssistantId="3" PriceTypeId="1" BundleCode="" BundleQuantity="0.0000" Points="0" QuantityBeforeCorrection="0.0000" QuantityAfterCorrection="0.0000" PurchaseValue="0.0000" SourceOrdinalNumber="0" VATRateId="2" />
</Items>
<Payments>
<Payment NumberString="KP/2016/PKO BP/00013/" OrdinalNumber="1" PaymentFormId="4" CashBankAccountId="2" Type="1" SystemValue="167.10" CurrencyValue="167.10" CurrencyId="1" Numerator="1" Denominator="1" DocumentDate="2016-05-04 12:17:02.613" ExchangeRateDate="2016-04-29 10:05:43.297" AffectsCashRegisterBalance="true"/>
</Payments>
<VATAggregates>
<VATAggregate VATRateId="2" NetValue="135.85" GrossValue="167.10" VATValue="31.25" />
</VATAggregates>
</TradeDocument>
</Element>
</Elements>';
SELECT Elmt.value('@Guid','uniqueidentifier') AS [Guid]
,Elmt.query('*') AS [Data]
FROM @xmlWithElements.nodes('Elements/Element') AS A(Elmt)