ES|QL ST_INTERSECTION function

Returns the geometric intersection of two geometries.

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geomA

Expression of type geo_point, geo_shape, cartesian_point or cartesian_shape. If null, the function returns null.

geomB

Expression of type geo_point, geo_shape, cartesian_point or cartesian_shape. Must share the same coordinate reference system as the first parameter. If null, the function returns null.

Returns the geometric intersection of two geometries. The result is a geometry representing the portion that both input geometries have in common. Returns an empty geometry if the inputs do not intersect. Both geometries must share the same coordinate reference system.

ROW a = TO_GEOSHAPE("POLYGON ((0 0, 3 0, 3 3, 0 3, 0 0))"),
    b = TO_GEOSHAPE("POLYGON ((1 1, 4 1, 4 4, 1 4, 1 1))")
| EVAL intersected = ST_INTERSECTION(a, b)
| KEEP intersected
		

Intersection of two overlapping polygons

The intersection is the shared area of both polygons.

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