问题
I have created a script which takes data from a table in SQL and generates an XML output. The parent, child and sub-child tags are all the same which for 2 tags. The SQL script is outputting them as one XML value instead of 2.
SELECT
Request.TransactionRef AS [RequestHeader/RequestID],
'Deal.Trial' AS [RequestHeader/Action],
'DoDealValidate' AS [RequestHeader/ActionFlags/Flag],
'DoDealDerive' AS [RequestHeader/ActionFlags/Flag]
The current results are:
<ActionFlags>
<Flag>DoDealValidateDoDealDerive</Flag>
</ActionFlags>
<ActionFlags>
<Flag>DoDealValidate</Flag>
<Flag>DoDealDerive</Flag>
</ActionFlags>
回答1:
Just place something empty in between:
SELECT
'blah' AS [RequestHeader/RequestID],
'Deal.Trial' AS [RequestHeader/Action],
'DoDealValidate' AS [RequestHeader/ActionFlags/Flag],
NULL AS [RequestHeader/ActionFlags],
'DoDealDerive' AS [RequestHeader/ActionFlags/Flag]
FOR XML PATH('row');
The background:
The engine is running through the SELECT's columns and builds them one after the other.
- Well, there is a
<RequestHeader>to open - and there is a
<RequestID>to open - Again the
<RequestHeader>, still open, nothin to to - and there is
<Action>below... Oh, we must close the<RequestID>and open a new<Action> - and so on...
In your code the <Flag> is still open, therefore the content is written into the open element.
My change will let the engine think
- Ah, we move up one level, so we close the
<Flag>first... Oops, there's nothing to write... - Now there is something for
<Flag>, which is not open anymore, we have to re-open a (new)<Flag>node - and so on...
来源：https://stackoverflow.com/questions/57804930/how-to-break-up-two-xml-tags-with-the-same-subchild-names-in-sql