a) SELECT ST_WITHIN(
POINT(11.780, 45.649), ST_BUFFER(geom, 300)
);
b) SELECT ST_OVERLAP(
ST_TRANSFORM( POINT(11.780, 45.649), 3003),
ST_BUFFER(geom, 300)
) FROM punti_ricarica;
c) SELECT ST_CONTAINS(
ST_TRANSFORM(ST_BUFFER(geom, 300),3003),
POINT(11.780, 45.649)
) FROM punti_ricarica;