[英]Read XML node value from SQL column
I am trying to extract data from an xml in a sql column and return that into a query result, but I have been struggling to read this partciluar xml.我正在尝试从 sql 列中的 xml 中提取数据并将其返回到查询结果中,但我一直在努力阅读这个部分 xml。 I am not sure what I am doing wrong or if the way the xml is structured needs a different approach.我不确定我做错了什么,或者 xml 的结构方式是否需要不同的方法。 I have tried simpler XMLs without the attributes and references and was able to extract from a single node.我尝试了没有属性和引用的更简单的 XML,并且能够从单个节点中提取。
These are the XML file contents:这些是 XML 文件内容:
<InstanceXmlData xmlns="http://dev.docuware.com/bpw" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<ContextProperties>
<FieldValue>
<FieldID>GV_Divisional__Manager</FieldID>
<Value i:type="AssignToItem">
<EntryType>User</EntryType>
<ID>0a28a5ad-db79-4369-9e53-84d0c0bbd0f7</ID>
<Name>Onward TUBELA</Name>
<ParentId>00000000-0000-0000-0000-000000000000</ParentId>
</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_GM__Finance</FieldID>
<Value i:nil="true" />
</FieldValue>
<FieldValue>
<FieldID>GV_skip__accounts__review</FieldID>
<Value i:nil="true" />
</FieldValue>
<FieldValue>
<FieldID>DW_DWWorkflowCoreData</FieldID>
<Value i:type="DWWorkflowCoreData">
<ActivityName>Accountant Review</ActivityName>
<AssignToData>
<Definition>
<AssignToItem>
<EntryType>GlobalVariable</EntryType>
<ID>00000000-0000-0000-0000-000000000000</ID>
<Name>GV_Accountant</Name>
<ParentId>00000000-0000-0000-0000-000000000000</ParentId>
</AssignToItem>
</Definition>
<TaskUsers>
<TaskUser>
<ID>d1fceeb3-7833-44c2-b6e7-b4883300b987</ID>
<Name>Hector THOLE</Name>
<SubstitutionRuleID>00000000-0000-0000-0000-000000000000</SubstitutionRuleID>
</TaskUser>
</TaskUsers>
</AssignToData>
<CurrentUserId>058b7c3b-9dff-46c2-8654-93b84eb1eac0</CurrentUserId>
<CurrentUserName>Livhuwani NEMBILWI</CurrentUserName>
<DocumentLink i:nil="true" />
<DocumentUserVersion>1.0</DocumentUserVersion>
<DocumentVersionId>17973</DocumentVersionId>
<ExpirationDate>0001-01-01T00:00:00</ExpirationDate>
<FileCabinetID>62005e95-7a62-470e-9fca-c0a2968a22d8</FileCabinetID>
<HistoryStepCount>25</HistoryStepCount>
<InstanceStartDate>2020-03-20T14:43:43.9549487Z</InstanceStartDate>
<NotificationDate>0001-01-01T00:00:00</NotificationDate>
<OrganizationID>e6674399-4abc-48dc-95a7-7a484ceab4e5</OrganizationID>
<ReceivedOn>2020-03-31T12:48:15.8432349Z</ReceivedOn>
<RetryCount>0</RetryCount>
<TaskLink i:nil="true" />
<TaskListLink i:nil="true" />
<TaskUserName>admin</TaskUserName>
<WorkflowId>bdaee87a-8b5c-4c8e-8cda-c84ec31ae333</WorkflowId>
<WorkflowName>Journals</WorkflowName>
<WorkflowVersion>61</WorkflowVersion>
</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_GM</FieldID>
<Value i:nil="true" />
</FieldValue>
<FieldValue>
<FieldID>GV_pp__ref</FieldID>
<Value i:nil="true" />
</FieldValue>
<FieldValue>
<FieldID>GV_query__comment</FieldID>
<Value xmlns:a="http://www.w3.org/2001/XMLSchema" i:type="a:string">support for the amount not attached </Value>
</FieldValue>
<FieldValue>
<FieldID>GV_Financial__Accounting__Manager</FieldID>
<Value i:type="AssignToItem">
<EntryType>User</EntryType>
<ID>3df4acb0-b321-4845-a274-84e4210914f2</ID>
<Name>Mmasikati Nkgadima</Name>
<ParentId>00000000-0000-0000-0000-000000000000</ParentId>
</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_company__code</FieldID>
<Value xmlns:a="http://www.w3.org/2001/XMLSchema" i:type="a:string">083H</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_igg</FieldID>
<Value xmlns:a="http://www.w3.org/2001/XMLSchema" i:type="a:string">MABELKOB</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_Originator</FieldID>
<Value i:type="AssignToItem">
<EntryType>User</EntryType>
<ID>0bfef02c-4222-41b4-bd9f-4e04984b74c7</ID>
<Name>Mabel KOBE</Name>
<ParentId>00000000-0000-0000-0000-000000000000</ParentId>
</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_sap__post__url</FieldID>
<Value xmlns:a="http://www.w3.org/2001/XMLSchema" i:type="a:string">http://zarmtsaros-ap08:8082/post_to_sap_auto</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_exchange__rate</FieldID>
<Value xmlns:a="http://www.w3.org/2001/XMLSchema" i:type="a:string">1.8331</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_Line__Manager</FieldID>
<Value i:type="AssignToItem">
<EntryType>User</EntryType>
<ID>cb845699-5dd8-4ea6-98a8-931d0e36f06a</ID>
<Name>Letsogile Remmonye MOAMPE</Name>
<ParentId>00000000-0000-0000-0000-000000000000</ParentId>
</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_posting__month</FieldID>
<Value xmlns:a="http://www.w3.org/2001/XMLSchema" i:type="a:string">31-03-2020</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_General__Manager</FieldID>
<Value i:type="AssignToItem">
<EntryType>User</EntryType>
<ID>0a28a5ad-db79-4369-9e53-84d0c0bbd0f7</ID>
<Name>Onward TUBELA</Name>
<ParentId>00000000-0000-0000-0000-000000000000</ParentId>
</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_Department</FieldID>
<Value i:nil="true" />
</FieldValue>
<FieldValue>
<FieldID>GV_Accountant</FieldID>
<Value i:type="AssignToItem">
<EntryType>User</EntryType>
<ID>058b7c3b-9dff-46c2-8654-93b84eb1eac0</ID>
<Name>Livhuwani Nembilwi</Name>
<ParentId>00000000-0000-0000-0000-000000000000</ParentId>
</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_total__amount</FieldID>
<Value xmlns:a="http://www.w3.org/2001/XMLSchema" i:type="a:decimal">1992943.771991</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_DW</FieldID>
<Value xmlns:a="http://www.w3.org/2001/XMLSchema" i:type="a:string">DWPP2342</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_MDCEO</FieldID>
<Value i:type="AssignToItem">
<EntryType>User</EntryType>
<ID>8cd8362e-31d3-4603-bf65-cbcb1484956a</ID>
<Name>Mariam KANE-GARCIA</Name>
<ParentId>00000000-0000-0000-0000-000000000000</ParentId>
</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_division</FieldID>
<Value xmlns:a="http://www.w3.org/2001/XMLSchema" i:type="a:string">Botswana</Value>
</FieldValue>
<FieldValue>
<FieldID>GV_result</FieldID>
<Value i:nil="true" />
</FieldValue>
</ContextProperties>
<FaultedInfo i:nil="true" />
<StopWorkflowInfo i:nil="true" />
<UserCredentialsInfo i:nil="true" />
</InstanceXmlData>
Ideally I would want the value in the name child node of the TaskUser : "Hector THOLE" but as a simple way to debug I tried to use the FieldID : "GV_Divisional__Manager" with this query:理想情况下,我希望TaskUser的名称子节点中的值:“Hector THOLE”,但作为一种简单的调试方法,我尝试将FieldID :“GV_Divisional__Manager”与此查询一起使用:
select XmlData.value('(/InstanceXmlData/ContextProperties/FieldValue/FieldID)[1]','varchar(max)') as
TaskUser
from [dwworkflowengine].[dbo].[Instances]
The results are:结果是:
I am not sure why the results are all null and any help would be much appreciated.我不确定为什么结果都是 null 并且非常感谢任何帮助。
You have a default XML namespace in your XML document:您的 XML 文档中有一个默认的XML 命名空间:
<InstanceXmlData xmlns="http://dev.docuware.com/bpw" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
***********************************
but so far, you're totally ignoring it - don't do that!但是到目前为止,您完全忽略了它-不要那样做!
To get the ID
element's value for Hector TOHLE
, use this SQL:要获取Hector TOHLE
的ID
元素值,请使用此 SQL:
-- define the default XML namespace to use
WITH XMLNAMESPACES(DEFAULT 'http://dev.docuware.com/bpw')
SELECT XmlData.value('(/InstanceXmlData/ContextProperties/FieldValue/Value/AssignToData/TaskUsers/TaskUser/ID)[1]', 'varchar(50)')
FROM [dwworkflowengine].[dbo].[Instances]
WHERE XmlData.value('(/InstanceXmlData/ContextProperties/FieldValue/Value/AssignToData/TaskUsers/TaskUser/Name)[1]', 'varchar(50)') = 'Hector THOLE'
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