ARRAY_CUMULATIVE_SUM
Returns an array of partial sums of elements from the source array (a cumulative sum). If the argument <func> is provided, the values of the array elements are converted by this function before summing.
Syntax
ARRAY_CUMULATIVE_SUM( [<func>,] arr)
| Parameter | Description |
|---|---|
<func> | The function used to convert the array members. |
<arr> | The array used for the sum calculations. |
Example
SELECT
ARRAY_CUMULATIVE_SUM(x -> x + 1, [ 1, 2, 3, 9 ]) AS res;
Returns: 2,5,9,19
SELECT
ARRAY_CUMULATIVE_SUM([ 1, 2, 3, 9 ]) AS res;
Returns: 1,3,6,15