inner_product
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