inner_product

Description

Computes the scalar product of two vectors of the same size

Syntax

INNER_PRODUCT(<array1>, <array2>)

Parameters

Parameter	Description
<array1>	The first vector, the subtype of the input array supports: TINYINT, SMALLINT, INT, BIGINT, LARGEINT, FLOAT, DOUBLE, the number of elements must be consistent with array2
<array2>	The second vector, the subtype of the input array supports: TINYINT, SMALLINT, INT, BIGINT, LARGEINT, FLOAT, DOUBLE, the number of elements must be consistent with array1

Return Value

Returns the scalar product of two vectors of the same size. If the input array is NULL, or any element in array is NULL, then NULL is returned.

Examples

SELECT INNER_PRODUCT([1, 2], [2, 3]),INNER_PRODUCT([3, 6], [4, 7]);

+-------------------------------+-------------------------------+
| inner_product([1, 2], [2, 3]) | inner_product([3, 6], [4, 7]) |
+-------------------------------+-------------------------------+
|                             8 |                            54 |
+-------------------------------+-------------------------------+