How does the CONCAT_WS() function work with the MySQL WHERE clause?

When we use CONCAT_WS() function with WHERE clause, the output will be based on the conditions provided in WHERE clause. From the example of the 'Student' table, we can understand the following

Example

mysql> Select CONCAT_WS(' ',Name, Last_name, 'Resident of', Address, 'is studying', Subject)AS 'Student Detail' from student WHERE id = 20;
+----------------------------------------------------------------+
| Student Detail                                                 |
+----------------------------------------------------------------+
| Gaurav Rathore Resident of Jaipur is studying Computers        |
+----------------------------------------------------------------+
1 row in set (0.00 sec)

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