creating a customised column in sql

[simransuri]

hey!
i need to create a customised table "Employee" in which i have to insert employeeid,employeename and salary...on inserting the salary,the table should automatically calculate Hra(10% of basic salary),DA(9% of basic salary) and hence calculate net salary...so...plz guide me...how to do this?

[debasisdas]

so, what you have done so far ?

[smantscheff]

how to do this

Don't. Do not store calculated values in your database. If Hra and DA are percentages of another database field, create a view which calculates them instead of storing them.

[simransuri]

but how can i calculate values in a view???
can u plz show me thru some example...plz...i need to complete this by today otherwise my teacher will screw me...plz guide me

[debasisdas]

You need to crate a view and add the calculated values as columns.

HRA = salary * 10/100
DA = salary * 9 /100
net = HRA + DA

[simransuri]

i still didnt get u...need an example...plz read my above query carefully

[smantscheff]

create view xyz as 
select *, salary * 10 / 100 as HRA, salary * 9/100 as DA, salary * 19/100 as net from employees