add table alias optional argument to macro

macros/unix_ms_timestamp_to_utc.sql

@@ -9,6 +9,14 @@ It generates two output fields:
 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) %}
+{% 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 %}