In the field of query optimization, a tremendous amount of research has been delivered into fixing and adjusting existing optimizer solutions. Moreover, recent work has also shown that substantial performance gain can be achieved by setting query optimizer instructions appropriately. However, the sets of beneficial instructions may vary greatly for each query. In this contribution, we provide a state-of-the-art review on optimizer hinting and present some experimental evaluations showing hints should not be neglected during evaluation based on preliminary assumptions.