I need to modify structure of XML returned in SQL query

Question

0.00/5 (No votes)

See more:

XML

SQL-Server

SQL-Server-2012

, +

i have following query

SQL

select r.AccommodationId as 'Property', r.RoomId as 'RoomId' from	BookingEngine_Live.dbo.Rooms r FOR XML RAW ('PropertyDataSet'),ROOT ('Transaction'),ELEMENTS ;

which gives me below result:

XML

<transaction>
  <propertydataset>
    <property>1</property>
    <roomid>51</property>
  </propertydataset>
  <propertydataset>
    <property>1</property>
    <roomid>53</property>
  </propertydataset>  
  <propertydataset>
    <property>1</property>
    <roomid>65</property>
  </propertydataset>  
  <propertydataset>
    <property>2</property>
    <roomid>51</property>
  </propertydataset>  
  <propertydataset>
    <property>2</property>
    <roomid>481</property>
  </propertydataset>
  <propertydataset>
    <property>2</property>
    <roomid>101739578</property>
  </propertydataset> 
</transaction>

while I need the result as below:

XML

<transaction>
  <propertydataset>
    <property>1</property>
    <roomid>51</property>
    <roomid>53</property>
    <roomid>65</property>
  </propertydataset>  
  <propertydataset>
    <property>2</property>
    <roomid>51</property>
    <roomid>481</property>
    <roomid>101739578</property>
  </propertydataset> 
</transaction>

What I have tried:

In simple words, I dont want property element to be repeated for every RoomID element. Please guide. Thanks.

Posted 7-Dec-16 0:39am

Member 10003929

Updated 6-Jan-17 7:46am

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

NightWizzard · Answer 1 · 2017-01-06T07:46:00

The FOR XML option always translates the resulting table row by row. The SELECT statemtent you're using will result in:

Property           RoomId
-------------------------
1                   51
1                   53
1                   65
2                   51
2                   481
2                   101739578

To get the XML structure as needed you have to create a query that will result in:

Property            RoomId            RoomID      RoomId
--------------------------------------------------------
1                     51                53         65
2                     51               481  101739578

This isn't possible because you can't have the same column name more than once, even if you're using a PIVOT statement to turn the RoomIds form rows to columns.
You only can get the RoomIds at same level in a subset like this:

XML

<transaction>
  <propertydataset>
    <property>1</property>
      <Rooms>
        <roomid>51</property>
        <roomid>53</property>
        <roomid>65</property>
      </Rooms>
  </propertydataset>  
  <propertydataset>
    <property>2</property>
      <Rooms>
        <roomid>51</property>
        <roomid>481</property>
        <roomid>101739578</property>
      </Rooms>
  </propertydataset> 
</transaction>

Look here for how to create nested XML queries:
Nested FOR XML results with SQL Server’s PATH mode – Richard Dingwall[^]