Add alias argument to `deduplicate

README.md

@@ -36,7 +36,7 @@ For compatibility details between versions of dbt-core and dbt-utils, [see this
 
 - [SQL generators](#sql-generators)
     - [date_spine](#date_spine-source)
-    - [dedupe](#dedupe-source)
+    - [deduplicate](#deduplicate)
     - [haversine_distance](#haversine_distance-source)
     - [group_by](#group_by-source)
     - [star](#star-source)
@@ -716,7 +716,8 @@ This macro returns the sql required to remove duplicate rows from a model or sou
 {{ dbt_utils.deduplicate(
     relation=source('my_source', 'my_table'),
     group_by="user_id, cast(timestamp as day)",
-    order_by="timestamp desc"
+    order_by="timestamp desc",
+    alias="my_cte"
    )
 }}
 ```

macros/sql/deduplicate.sql

@@ -1,8 +1,8 @@
-{%- macro deduplicate(relation, group_by, order_by=none) -%}
-    {{ return(adapter.dispatch('deduplicate', 'dbt_utils')(relation, group_by, order_by=order_by)) }}
+{%- macro deduplicate(relation, group_by, order_by=none, alias=none) -%}
+    {{ return(adapter.dispatch('deduplicate', 'dbt_utils')(relation, group_by, order_by=order_by, alias=alias)) }}
 {% endmacro %}
 
-{%- macro default__deduplicate(relation, group_by, order_by=none) -%}
+{%- macro default__deduplicate(relation, group_by, order_by=none, alias=none) -%}
 
     select
         {{ dbt_utils.star(relation, relation_alias='deduped') | indent }}
@@ -15,7 +15,7 @@
                 order by {{ order_by }}
                 {%- endif %}
             ) as rn
-        from {{ relation }} as _inner
+        from {{ relation if alias is none else alias }} as _inner
     ) as deduped
     where deduped.rn = 1
 
@@ -39,7 +39,7 @@
                 {%- endif %}
                 limit 1
             )[offset(0)] as deduped
-        from {{ relation }} as original
+        from {{ relation if alias is none else alias }} as original
         group by {{ group_by }}
     )