Greetings
There was a need to find the area of intersection of two polygons.
Intersection (g1, g2) - there is a function in the manual.
But when I make a SELECT Intersection(P1.polygon, P2.polygon)
request SELECT Intersection(P1.polygon, P2.polygon)
, I get the error "Function does not exists", the other functions ( Intersects
, Within
, ...) work normally.
Why it happens?