57. The method of claim 56 , wherein the method further comprises the step of determining the alternative query block based on the first query block.
57. The method of claim 56 , wherein the method further comprises the step of determining the alternative query block based on the first query block. 61. The method of claim 57 , wherein the query contains a predicate, and the first query block is an inline view; and wherein the step of determining the alternative query block comprises: pushing the predicate into the inline view.