I have a polygon geometry and multilinestring geometry. How do i find the intersection of both these geometries. Both the geometries are in same reference system. Does st_intersection gives me the intersection point???
Yes and no. From ST_Intersection:
The result will probably a (Multi)Linestring, where they intersect. To get the points from an intersection of lines and polygons, you need to extract either the exterior ring or interior rings (if they exist) from the polygon. For example, if you just need the exterior ring: