PRAGMA WindowNewPipeline;
/* custom error: Inf is not allowed for RANGE frame bounds */

$data = [
    <|a: 1, count: 5|>,
    <|a: 2, count: 5|>,
    <|a: 3, count: 5|>,
    <|a: 5, count: 5|>,
    <|a: 6, count: 5|>,
];

$win_result = (
    SELECT
        COUNT(*) OVER w1 AS actual_count,
        count,
    FROM
        AS_TABLE($data)
    WINDOW
        w1 AS (
            ORDER BY
                a ASC
            RANGE BETWEEN Float("inf") PRECEDING AND Double("inf") FOLLOWING
        )
);

$str = ($x) -> {
    return CAST($x as String) ?? "null";
};

SELECT
    Ensure(actual_count, count IS NOT DISTINCT FROM actual_count, $str(actual_count))
FROM
    $win_result
;