l2_distance

Description

Calculate the distance between two points (vector values are coordinates) in Euclidean space

Syntax

L2_DISTANCE(<array1>, <array2>)

Parameters

Parameter	Description
<array1>	The first vector (the vector value is the coordinate),The subtypes of the input array are: TINYINT, SMALLINT, INT, BIGINT, LARGEINT, FLOAT, DOUBLE, The number of elements must be consistent with array2
<array2>	The second vector (the vector value is the coordinate), 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 distance between two points (vector values are coordinates) in Euclidean space. If the input array is NULL, or any element in the array is NULL, then NULL is returned.

Example

SELECT L2_DISTANCE([4, 5], [6, 8]),L2_DISTANCE([3, 6], [4, 5]);

+-----------------------------+-----------------------------+
| l2_distance([4, 5], [6, 8]) | l2_distance([3, 6], [4, 5]) |
+-----------------------------+-----------------------------+
|           3.605551275463989 |          1.4142135623730951 |
+-----------------------------+-----------------------------+