ClickHouse/tests/queries/0_stateless/01096_array_reduce_in_ranges.sql

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SELECT
arrayReduceInRanges(
'groupArray',
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[(1, 3), (2, 3), (3, 3)],
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['a', 'b', 'c', 'd', 'e']
);
SELECT
arrayReduceInRanges(
'sum',
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[
(-6, 0), (-4, 0), (-2, 0), (0, 0), (2, 0), (4, 0),
(-6, 1), (-4, 1), (-2, 1), (0, 1), (2, 1), (4, 1),
(-6, 2), (-4, 2), (-2, 2), (0, 2), (2, 2), (4, 2),
(-6, 3), (-4, 3), (-2, 3), (0, 3), (2, 3), (4, 3)
],
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[100, 200, 300, 400]
);
WITH
arrayMap(x -> x + 1, range(50)) as data
SELECT
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arrayReduceInRanges('groupArray', [(a, c), (b, d)], data) =
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[arraySlice(data, a, c), arraySlice(data, b, d)]
FROM (
SELECT
cityHash64(number + 100) % 40 as a,
cityHash64(number + 200) % 60 as b,
cityHash64(number + 300) % 20 as c,
cityHash64(number + 400) % 30 as d
FROM numbers(20)
);