ClickHouse/tests/queries/0_stateless/02020_exponential_smoothing.sql

SELECT number = 0 AS value, number AS time, exponentialMovingAverage(1)(value, time) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS exp_smooth FROM numbers(10);
SELECT value, time, round(exp_smooth, 3) FROM (SELECT number = 0 AS value, number AS time, exponentialMovingAverage(10)(value, time) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS exp_smooth FROM numbers(10));

SELECT number AS value, number AS time, exponentialMovingAverage(1)(value, time) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS exp_smooth FROM numbers(10);

SELECT
    value,
    time,
    round(exp_smooth, 3),
    bar(exp_smooth, 0, 1, 50) AS bar
FROM
(
    SELECT
        (number = 0) OR (number >= 25) AS value,
        number AS time,
        exponentialMovingAverage(10)(value, time) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS exp_smooth
    FROM numbers(50)
);

SELECT
    value,
    time,
    round(exp_smooth, 3),
    bar(exp_smooth, 0, 1, 50) AS bar
FROM
(
    SELECT
        (number % 5) = 0 AS value,
        number AS time,
        exponentialMovingAverage(1)(value, time) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS exp_smooth
    FROM numbers(50)
);