SQL Server – How to add column dynamically in where clause

In this post, we will learn with example how to add the column dynamically in where clause.

Example:

For demo we have table as shown in the snapshot

Basically we want to execute following script (i.e. Script: 1) but column name (i.e. FIRST_NAME) added dynamically in where clause.

Script: 1

SELECT * FROM EMPLOYEE WHERE FIRST_NAME = 'VARINDER'

Created a table and insert the column name value (i.e. FIRST_NAME) as shown in the snapshot

Now we will execute the Script: 1 in which we add the column dynamically in where clause

DECLARE @COL VARCHAR(15)
DECLARE @SQL VARCHAR(1000)

SELECT @COL = column1 from TEMP_Table

SET @SQL = ' SELECT * from EMPLOYEE WHERE ' + @Col + ' = ' + '''VARINDER'''

EXEC(@SQL)

If you have any suggestion/comment please share.