CASE WHEN in Oracle Versions

In wich Oracle Versions (8.1.5.0.0 or higher ) cant use CASE WHEN ?

Thanks.

You CAN'T in 8.1.5, you CAN in 8.1.7.
Not sure about 8.1.6, my guess is you CAN.

u r right ales. u can in 8.1.6

thank you for your support

u r right ales. u can in 8.1.6