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SQL SERVER: Searching XML Node's Attribute Value Exists or Not in XML Datatype Column of Table

Introduction: In this article i am going to explain how to find all or specific records in sql table where the xml node's attribute value matches with the variable value that we pass.


Implementation: Let create a table variable for demonstration purpose.

DECLARE @Employee TABLE(Id INT IDENTITY(1,1),empXML XML);

Let's insert some dummy data into this table.

INSERT INTO @Employee VALUES
(
            '<ROOT>
            <Employee Id="100"/>
            <Employee Id="101"/>
            <Employee Id="102"/>      
            </ROOT>'
)
INSERT INTO @Employee VALUES
(
            '<ROOT>
            <Employee Id="100"/>
            <Employee Id="106"/>
            <Employee Id="107"/>      
            </ROOT>'
)
INSERT INTO @Employee VALUES
(
            '<ROOT>
            <Employee Id="100"/>
            <Employee Id="102"/>
            <Employee Id="109"/>      
            </ROOT>'
)
INSERT INTO @Employee VALUES
(
            '<ROOT>
            <Employee Id="111"/>
            <Employee Id="107"/>
            <Employee Id="101"/>      
            </ROOT>'
)

Show table data
SELECT * FROM @Employee

Searching XML Node's Attribute Value Exists or Not in XML Datatype Column of Sql Server Table

Now suppose we want to find all the rows where Employee Id=101 exists in empXML column. 
DECLARE @EmployeeId INT=101;

Then the Query will be as:

SELECT * FROM @Employee 
WHERE empXML.exist('ROOT/Employee[@Id=sql:variable("@EmployeeId")]') = 1

Result will be as expected i.e.it will find all the rows from table where Employee Id=101 exists :

Id
empXML
1
<ROOT><Employee Id="100" /><Employee Id="101" /><Employee Id="102" /></ROOT>
4
<ROOT><Employee Id="111" /><Employee Id="107" /><Employee Id="101" /></ROOT>

Now suppose we want to find only those records where Employee Id=101 exists in empXML column and the value of the column Id=4. Then the Query will be as:

SELECT * FROM @Employee 
WHERE empXML.exist('ROOT/Employee[@Id=sql:variable("@EmployeeId")]') = 1 AND Id=4

Result will be as expected i.e.it will find only those rows from table where Employee Id=101 exists AND Id=4

Id
empXML
4
<ROOT><Employee Id="111" /><Employee Id="107" /><Employee Id="101" /></ROOT>

Now over to you:
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