I m having a table
SALES(sno,comp_name,quantity,costperunit,totalcost)
After supplying the costperunit
values, totalcost
need to be calculated as "totalcost=quantity*costperunit".
I want to multiply 'quantity'
and 'costperunit'
columns and store the result in 'totalcost'
column of same table.
I have tried this:
insert into SALES(totalcost) select quantity*costperunit as res from SALES
But It failed!
Somebody please help me in achieving this.. Thanks in Advance