SUM() OVER ...

All functions > WINDOW FUNCTION > SUM() OVER ...

Returns the sum of values in the window frame.

Syntax

SUM(expr) [FILTER (WHERE condition) | WITHIN (WHERE condition)] OVER ([PARTITION BY expr [, ...]] [ORDER BY sort_item [, ...]] [ROWS|RANGE|GROUPS frame])

Notes

  • Calculates sum over a window of rows
  • Useful for running totals and cumulative sums
  • Returns same type as input expression
  • NULL values are ignored in the calculation

See also

Examples

FeatureQL
SELECT
    -- Running sum (default frame to current row; v permuted so totals differ from v)
    f1 := ZIP(ARRAY(1, 2, 3, 4) AS id, ARRAY(30, 10, 20, 5) AS v).TRANSFORM(
        SELECT SUM(v) OVER (ORDER BY id ASC)
    ).UNWRAP(),
    -- Running sum counting only rows where v > 15 (10 and 5 excluded from the frame)
    f2 := ZIP(ARRAY(1, 2, 3, 4) AS id, ARRAY(30, 10, 20, 5) AS v).TRANSFORM(
        SELECT SUM(v) FILTER (WHERE v > 15) OVER (ORDER BY id ASC)
    ).UNWRAP()
;
Result
f1 ARRAYf2 ARRAY
[30, 40, 60, 65][30, 30, 50, 50]

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Last update at: 2026/06/20 10:08:10