Version 1.4
SELECT * FROM GeometryOverlay ( ON { table | view | (query) } USING SourceLocationColumn ('source_location_column') BoundaryOperator ('CONVEXHULL') [ Accumulate ({ 'accumulate_column' | accumulate_column_range }[,...]) ] ) AS alias;
SELECT * FROM GeometryOverlay ( ON { table | view | (query) } USING SourceLocationColumn ('source_location_column') BoundaryOperator ('CONVEXHULL') [ Accumulate ({ 'accumulate_column' | accumulate_column_range }[,...]) ] ) AS alias;