---

{ “title”: “inner_product”, “language”: “en” }

inner_product

description

Syntax

DOUBLE inner_product(ARRAY<T> array1, ARRAY<T> array2)

Calculates the scalar product of two vectors of the same size. 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

sql> SELECT inner_product([1, 2], [2, 3]);
+-----------------------------------------+
| inner_product(ARRAY(1, 2), ARRAY(2, 3)) |
+-----------------------------------------+
|                                       8 |
+-----------------------------------------+

keywords

INNER_PRODUCT,DISTANCE,ARRAY