cosine_distance

description

Syntax

  1. DOUBLE cosine_distance(ARRAY<T> array1, ARRAY<T> array2)

Calculates the cosine distance between two vectors (the values of the vectors are the coordinates). Return NULL if input array is NULL or any element of array is NULL.

Notice

  • nested type of input array support: TINYINT, SMALLINT, INT, BIGINT, LARGEINT, FLOAT, DOUBLE
  • input array1 and array2 should have the same element size

example

  1. sql> SELECT cosine_distance([1, 2], [2, 3]);
  2. +-------------------------------------------+
  3. | cosine_distance(ARRAY(1, 2), ARRAY(2, 3)) |
  4. +-------------------------------------------+
  5. |                     0.0077221232863322609 |
  6. +-------------------------------------------+

keywords

  1. COSINE_DISTANCE,DISTANCE,COSINE,ARRAY