SQL: Is it possible to calculate field by formula inside another field as text

Is it possible to make table or view, that have filed calculation by formula ,that specified in other field as text?

for example:

    A     B     C    formula    value
-   -     -     -   --------    -----
1.  2     1     3    (A+B)*C      9
2. 100   null   2      A/C       50

thanks and best regards