SQL to Parse XML - sql-server

Question

Can someone please help... I cannot seem to figure this out... I need to parse this using T-SQL. I have it saved as a file in the C:\Temp directory, named "OpenPos.XML". Any help would be very greatly appreciated. I need to be able to parse the XML and write it to a SQL table.
If I do an outer apply at all levels, it applies every PO # to every line instead of just for the lines related to that PO #.
XML File:
<?xml version="1.0" encoding="utf-8"?>
<acXML lang="en-us" xmlns="https://www.autocrib.net/acXMLSchema.xsd">
<Header>
<From>
<Company>Rolls Royce ATC (Indianapolis)</Company>
<Identity>rollsroyceatc-indianapolis</Identity>
<DatabaseName>AutoCribNet2</DatabaseName>
</From>
</Header>
<Request>
<OpenPurchaseOrderRequest ReqType="GET">
<PoNo>1716W</PoNo>
<ExternalPoNo />
<LineItems>
<Item>
<Line>1</Line>
<TagNo>1716</TagNo>
<VendorID>QMS</VendorID>
<ItemID>CARD BC6266</ItemID>
<ItemType>Expendable</ItemType>
<ItemRFID />
<Station>01</Station>
<Bin>0825-04-B-06</Bin>
<OrderQty>1</OrderQty>
<Received>1</Received>
<ReceivedBurn>0</ReceivedBurn>
<PackQty>1</PackQty>
<UnitCost>0.0000</UnitCost>
<UnitPrice>0.0000</UnitPrice>
<Lot />
<IsSpotBuy>False</IsSpotBuy>
<SpotTranCode>0</SpotTranCode>
<Inspect>False</Inspect>
<InspDate />
<InspOnHand>0</InspOnHand>
<InspBurn>0</InspBurn>
<OrderDate>01-13-2022</OrderDate>
<DueDate>01-25-2022</DueDate>
<PromiseDt>01-25-2022</PromiseDt>
<ReceiveDt />
<Department />
<Job />
<Machine />
<Reason />
<Part />
<Processed>False</Processed>
</Item>
</LineItems>
</OpenPurchaseOrderRequest>
<OpenPurchaseOrderRequest ReqType="GET">
SQL:
--Open POs
SELECT PO_X = CAST(BulkColumn AS xml)
INTO #PO
FROM OPENROWSET(BULK 'C:\AutoCrib WebServices\XML Files\ATC\OpenPOs.XML', SINGLE_CLOB) t
SELECT [Company] = p.PO_X.value('(//*:Header/*:From/*:Company)[1]', 'varchar(150)')
, [Identity] = f.value('(*:Identity)[1]', 'varchar(200)')
, [DatabaseNM] = f.value('(*:DatabaseName)[1]', 'varchar(50)')
, [PoNo] = r.value('(*:PoNo)[1]', 'varchar(10)')
, [ItemLine] = i.value('(*:Line)[1]', 'int')
, [ItemTagNo] = i.value('(*:TagNo)[1]', 'varchar(10)')
, [ItemVendorID] = i.value('(*:VendorID)[1]', 'varchar(100)')
, [ItemID] = i.value('(*:ItemID)[1]', 'varchar(30)')
, [ItemRFID] = i.value('(*:ItemRFID)[1]', 'varchar(50)')
, [ItemStation] = i.value('(*:Station)[1]', 'varchar(5)')
, [ItemBin] = i.value('(*:Bin)[1]', 'varchar(30)')
, [ItemOrderQty] = i.value('(*:OrderQty)[1]', 'int')
, [ItemReceived] = i.value('(*:Received)[1]', 'int')
, [ItemReceivedBurn] = i.value('(*:ReceivedBurn)[1]', 'int')
, [ItemPackQty] = i.value('(*:PackQty)[1]', 'int')
, [ItemUnitCost] = i.value('(*:UnitCost)[1]', 'money')
, [ItemUnitPrice] = i.value('(*:UnitPrice)[1]', 'money')
, [ItemOrderDate] = i.value('(*:OrderDate)[1]', 'datetime')
, [ItemDueDate] = i.value('(*:DueDate)[1]', 'datetime')
, [ItemPromiseDate] = i.value('(*:PromiseDt)[1]', 'datetime')
, [ItemReceiveDate] = i.value('(*:ReceiveDt)[1]', 'datetime')
, [ItemProcessed] = i.value('(*:Processed)[1]', 'varchar(10)')
FROM #PO p
OUTER APPLY p.PO_X.nodes('//*:Header/*:From') a(f)
OUTER APPLY p.PO_X.nodes('//*:Request/*:OpenPurchaseOrderRequest') c(r)
OUTER APPLY p.PO_X.nodes('//*:Request/*:OpenPurchaseOrderRequest/*:LineItems/*:Item') l(i)
DROP TABLE #PO

Answer 1

Start with loading the file. This uses OPENROWSET, but you might find BULK INSERT more flexible.
SELECT DepX = CAST(BulkColumn AS xml)
INTO #Departments
FROM OPENROWSET(BULK 'C:\Temp\Departments.XML', SINGLE_CLOB) t
--SINGLE_CLOB|SINGLE_NCLOB for Ascii vs Unicode
Now, we can query the xml
SELECT [From.Company] = d.DepX.value('(//*:Header/*:From/*:Company)[1]', 'varchar(99)')
/* Shorter paths if we OUTER APPLY the root we're interested in */
, [From.Company Shortcut] = f.value('(*:Company)[1]', 'varchar(99)')
FROM #Departments d
OUTER APPLY d.DepX.nodes('//*:Header/*:From') a(f)
Results
From.Company
From.Company Shortcut
Test Company (Indianapolis)
Test Company (Indianapolis)
For help with xml shredding, try Jacob Sebastian's SELECT * FROM XML
The output is helpful, but taking the time to go through and understand how it works is very educational.
This uses namespace wildcard *:
More complex xml might require WITH XMLNAMESPACE

Answer 2

I was finally able to figure it out. I was missing the namespace. Here's my SQL logic:
DECLARE #XML XML =
(SELECT *
FROM OPENROWSET(BULK 'C:\Temp\OpenPOs.XML', SINGLE_CLOB) t)
;WITH XMLNAMESPACES (DEFAULT 'https://www.autocrib.net/acXMLSchema.xsd')
SELECT A.evnt.value('(PoNo/text())[1]','varchar(10)') AS Event_DriverId
,B.rec.value('(Line/text())[1]','int') AS Record_RecordId
FROM #XML.nodes('/acXML/Request/OpenPurchaseOrderRequest') A(evnt)
OUTER APPLY A.evnt.nodes('LineItems/Item') B(rec);