KeyRange

A range filter. Matches rows where min <= value <= max. At least one of either 'min' or 'max' must be set for this range to be valid.

Field	Type	Description
key	STRING	The column name to filter on.
min	STRING	The minimum value in the range (inclusive). At least one of either 'min' or 'max' must be set.
max	STRING	The maximum value in the range (inclusive). At least one of either 'min' or 'max' must be set.