l1_distance
description
Syntax
DOUBLE l1_distance(ARRAY<T> array1, ARRAY<T> array2)计算L1空间中两点（向量值为坐标）之间的距离 如果输入array为NULL，或者array中任何元素为NULL，则返回NULL
Notice
- 输入数组的子类型支持：TINYINT、SMALLINT、INT、BIGINT、LARGEINT、FLOAT、DOUBLE
- 输入数组array1和array2，元素数量需保持一致
example
sql> SELECT l1_distance([1, 2], [2, 3]);
+---------------------------------------+
| l1_distance(ARRAY(1, 2), ARRAY(2, 3)) |
+---------------------------------------+
| 2 |
+---------------------------------------+keywords
L1_DISTANCE,DISTANCE,L1,ARRAY