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Sql Server: How to Parse XML and Get Data as Comma Separated String Format

Introduction: In this article I am going to explain how to get comma separated values from xml data in sql server using two suitable examples.

How to Parse XML and Get Data as Comma Separated String Format in sql server


Implementation: Let’s create two examples to understand how easily we can convert xml data to comma separated string format.

Let's suppose we have the XML data as string in the following format
DECLARE @EmployeeXml XML = '<ROOT>
                                                            <EMPLOYEE Id="2"/>
                                                            <EMPLOYEE Id="8"/>
                                                            <EMPLOYEE Id="6"/>
                                                            <EMPLOYEE Id="3"/>
                                                            <EMPLOYEE Id="1"/>
                                                      </ROOT>'
Example 1:
Suppose we want to get Employee Ids in comma separated string format from above xml string.

The query will be as:
SELECT STUFF(
(
            SELECT ', ' + col.value('@Id', 'VARCHAR(10)')
            FROM @EmployeeXml.nodes('//EMPLOYEE') AS tab(col)
            FOR XML PATH('')
), 1, 2, '') AS Result

Query result will be as: 
2, 8, 6, 3, 1

Example 2:
Suppose we want to get employee names in comma separated string format from xml --string. Since we have only Employee Ids in XML we need to join employee tables through employeeid. So let’s create employee table using following script

CREATE TABLE  tbEmployee
(
            EmployeeId                INT IDENTITY(1,1) PRIMARY KEY,
            EmployeeName         VARCHAR(50),
            Age                             INT    
)

Enter some dummy data in table using following insert query:

INSERT tbEmployee
VALUES
('Salman',25),
('Ranbeer',21),
('Hrithik',22),
('Aamir',28),
('Shahid',24),
('Sidharth',30),
('Varun',29),
('Kabeer',24),
('Raj',23);

Check table data
SELECT *FROM tbEmployee

EmployeeId
EmployeeName
Age
1
Salman
25
2
Ranbeer
21
3
Hrithik
22
4
Aamir
28
5
Shahid
24
6
Sidharth
30
7
Varun
29
8
Kabeer
24
9
Raj
23

Now we need to join data from xml and employee table to get the desired result.

The query will be as: 
SELECT STUFF(
(
SELECT ',' + CAST(EmployeeName AS VARCHAR(100))
FROM
(
   SELECT EM1.EmployeeName FROM tbEmployee0 EM1
   INNER JOIN (SELECT col.value('@Id','INT') AS EmployeeId FROM       @EmployeeXml.nodes('//EMPLOYEE')tab(col)) EM2
  ON EM1.EmployeeId=EM2.EmployeeId
)tb
ORDER BY EmployeeName
FOR XML PATH('')
), 1, 1, '') AS Result

Query result will be as: 
Hrithik, Kabeer, Ranbeer, Salman, Sidharth

  Now over to you:
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