UNION, INTERSECTION, DIFFERENCE and SYMDIFFERENCE - Aster Analytics

SELECT * FROM GeometryOverlay (
  ON {  table_name  |  view_name  | (query) } AS source PARTITION BY ANY
  ON {  table_name  |  view_name  | (query) } AS reference DIMENSION
  SourceLocationColumn ('source_location_column')
  ReferenceLocationColumn ('ref_location_column')
  ReferenceNameColumns
    ({ 'ref_name_column' | 'ref_name_column_range' }[,...])
  BoundaryOperator (
    { 'UNION' | 'INTERSECTION' | 'DIFFERENCE' | 'SYMDIFFERENCE' })
  [ OutputAll ({'true'|'yes'|'t'|'y'|'1'|'false'|'no'|'f'|'n'|'0'}) ]
  [ Accumulate
    ({ 'accumulate_column' | 'accumulate_column_range' }[,...]')]
);