Update SQL update the price i) rise cost by 10% when cost <500; ii) less cost by 10% when cost>1000?

Update SQL update the price i) rise cost by 10% when cost <500; ii) less cost by 10% when cost>1000?

From the BUET MSC (ICT) May 2019 – Written exam, question 8 of 20.

More from this paper