Stop setting cluster by to None (#806)

CHANGELOG.md

@@ -1,4 +1,8 @@
-## dbt-databricks TBD (TBD)
+## dbt-databricks 1.8.7 (TBD)
+
+### Fixes
+
+- Stop setting cluster by to None. If you want to drop liquid clustering, you will need to full-refresh ([806]https://github.com/databricks/dbt-databricks/pull/806)
 
 ## dbt-databricks 1.8.6 (September 18, 2024)
 

dbt/include/databricks/macros/relations/liquid_clustering.sql

@@ -9,19 +9,13 @@
 {%- endmacro -%}
 
 {% macro apply_liquid_clustered_cols(target_relation) -%}
-  {%- set file_format = config.get('file_format', default='delta') -%}
-  {%- set partition_by = config.get('partition_by', validator=validation.any[list, basestring], default=None) -%}
   {%- set cols = config.get('liquid_clustered_by', validator=validation.any[list, basestring]) -%}
   {%- if cols is not none %}
     {%- if cols is string -%}
       {%- set cols = [cols] -%}
-    {%- endif -%}      
+    {%- endif -%}
     {%- call statement('set_cluster_by_columns') -%}
         ALTER {{ target_relation.type }} {{ target_relation }} CLUSTER BY ({{ cols | join(', ') }})
     {%- endcall -%}
-  {%- elif not target_relation.is_hive_metastore() and file_format == "delta" and not partition_by -%}
-    {%- call statement('unset_cluster_by_columns') -%}
-        ALTER {{ target_relation.type }} {{ target_relation }} CLUSTER BY NONE
-    {%- endcall -%}
   {%- endif %}
 {%- endmacro -%}