8. The non-transitory computer-readable storage medium of claim 7 , further comprising instructions that cause the one or more computer systems to initialize the state of the one or more stateful query operators by constructing a list of tuples for the one or more identified query operators from the result set of data records.
9. The non-transitory computer-readable storage medium of claim 8 , wherein at least one tuple in the list of tuples is constructed based at least in part on a subset of attributes in the result set of data records.