1. A method comprising: performing at least one query operation; generating error information data based on at least an error encountered during performance of the query operation; generating a data result relating to any portion of the query operation that has successfully completed; continuing, as a function of at least one of a number of errors encountered and a class of error encountered, the query operation on data results relating to corresponding portions of the query operation that successfully completed; and processing the data results together with the error information data based on encountering the errors, the data results and the error information distinguishable by an indicator disposed therebetween; wherein an occurrence of the errors are encountered by an operator that is used to generate the data results, the occurrence of the errors causes the return of an error container instead of other regular data portion included in the data results; wherein the operator extracts partial results from the error container by consuming its input and passing through any non-error values as output.