/*
This macro converts a timestamp column from Unix epoch time (in milliseconds) 
to a UTC timestamp and a corresponding UTC date.

It generates two output fields:
1. The timestamp in UTC, with the alias formatted as <column_name>_at_utc.
2. The date in UTC, with the alias formatted as <column_name>_date_utc.

This macro is intended to be used within a SELECT statement 
and ensures that the output is properly formatted for further analysis.
*/
{% macro unix_ms_timestamp_to_utc(column_name, table_alias=None) %}
    {%- if table_alias -%}
        to_timestamp(
            {{ adapter.quote(table_alias) }}.{{ adapter.quote(column_name) }} / 1000
        ) at time zone 'UTC'
    {%- else -%}
        to_timestamp({{ adapter.quote(column_name) }} / 1000) at time zone 'UTC'

    {%- endif -%}

{% endmacro %}