Introduction

Write a query to get 5 % of admission fees from Michael, 10% of admission fees from John and for other 15 % of admission fees as ‘Deducted_Admission_fee’ from tblStudent table. I have used Microsoft SQL server 2008 R2 for the following demo.

 tblstudent

StudentId	FirstName	LastName	Admission_fee	Admission_date	Branch
1	John	Smith	1000	2018-06-10	Computer Engineering
2	David	Jones	1200	2018-06-20	Civil Engineering
3	Michael	Johnson	900	2018-08-15	Chemical Engineering
4	Chris	Lee	1500	2018-07-10	Electrical Engineering
5	Mike	Brown	1600	2018-09-10	Mechanical Engineering
6	Lisa	Smith	1800	2018-07-10	Computer Engineering
7	Mary	Smith	1600	2018-06-11	Computer Engineering

SELECT FirstName, CASE FirstName WHEN 'Michael' 
THEN Admission_fee * .10 WHEN 'John' THEN Admission_fee * .15
ELSE Admission_fee * .15 END "Deducted_Admission_fee" FROM tblStudent

Result