Function l2_norm

fn l2_norm(vector: VectorRef<'_>) -> F64

query R
SELECT round(vector_norm('[1,1]'::vector(2))::numeric, 5);
----
1.41421

query R
SELECT vector_norm('[3,4]'::vector(2));
----
5

query R
SELECT vector_norm('[0,1]'::vector(2));
----
1

query R
SELECT vector_norm('[3e18,4e18]'::vector(2))::real;
----
5e+18

query R
SELECT vector_norm('[0,0]'::vector(2));
----
0

query R
SELECT vector_norm('[2]'::vector(1));
----
2