maya-models/macros/tests/sequence_distinct_gaps.sql

{% macro sequence_distinct_gaps(
        table,
        column
    ) %}
    {%- set partition_sql = partition_by | join(", ") -%}
    {%- set previous_column = "prev_" ~ column -%}
    WITH source AS (
        SELECT
            {{ partition_sql + "," if partition_sql }}
            {{ column }},
            LAG(
                {{ column }},
                1
            ) over (
                ORDER BY
                    {{ column }} ASC
            ) AS {{ previous_column }}
        FROM (
            SELECT DISTINCT {{ column }} FROM {{ table }}
        )
           
    )
SELECT
    {{ previous_column }},
    {{ column }},
    {{ column }} - {{ previous_column }}
    - 1 AS gap
FROM
    source
WHERE
    {{ column }} - {{ previous_column }} <> 1
ORDER BY
    gap DESC
{% endmacro %}