Models parameter type information and contains constants
for the different parameter types for the functions and operators that are recognized by SAS Query Services.
A prompted step that filters a data item based on start and end date period or can filter based where either the start or
end (or both) members are relative.
This action determines whether or not the result items from any parent
query are ignored when compiling a list of effective result items for the
getEffectiveResultItems() method.
