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?

    1 answer 1

    There is a line that you may not have noticed

    These functions are not implemented in MySQL. (These functions are not implemented in MySQL.)