4. The method of claim 1 , wherein applying each conditional expression further comprises: determining a set of storage regions to be scanned based on application of that conditional expression.
4. The method of claim 1 , wherein applying each conditional expression further comprises: determining a set of storage regions to be scanned based on application of that conditional expression. 6. The method of claim 4 , wherein applying each conditional expression further comprises: determining units of column data within a storage region to be scanned based on application of that conditional expression.