Fix legacy incremental materialization (#178)

Author: genzgd

Diff for: CHANGELOG.md

@@ -1,3 +1,7 @@
+### Release [1.4.7], 2023-08-09
+#### Bug Fix
+- Fixed an exception in "legacy" incremental materializations that are not distributed
+
 ### Release [1.4.6], 2023-07-27
 #### Bug fix
 - Lightweight deletes could fail in environments where the HTTP session was not preserved (such as clusters behind a non-sticky

Diff for: dbt/adapters/clickhouse/__version__.py

@@ -1 +1 @@
-version = '1.4.6'
+version = '1.4.7'

Diff for: dbt/include/clickhouse/macros/materializations/incremental.sql

@@ -137,14 +137,14 @@
 {% macro clickhouse__incremental_legacy(existing_relation, intermediate_relation, on_schema_change, unique_key, is_distributed=False) %}
     {% set new_data_relation = existing_relation.incorporate(path={"identifier": model['name'] + '__dbt_new_data'}) %}
     {{ drop_relation_if_exists(new_data_relation) }}
-    {%- set distributed_new_data_relation = existing_relation.incorporate(path={"identifier": model['name'] + '__dbt_distributed_new_data'}) -%}
 
     {%- set inserted_relation = intermediate_relation -%}
     {%- set inserting_relation = new_data_relation -%}
 
     -- First create a temporary table for all of the new data
     {% if is_distributed %}
       -- Need to use distributed table to have data on all shards
+      {%- set distributed_new_data_relation = existing_relation.incorporate(path={"identifier": model['name'] + '__dbt_distributed_new_data'}) -%}
       {%- set inserting_relation = distributed_new_data_relation -%}
       {{ create_distributed_local_table(distributed_new_data_relation, new_data_relation, existing_relation, sql) }}
     {% else %}
@@ -190,8 +190,10 @@
     {% endcall %}
 
     {% do adapter.drop_relation(new_data_relation) %}
-    {{ drop_relation_if_exists(distributed_new_data_relation) }}
-    {{ drop_relation_if_exists(distributed_intermediate_relation) }}
+    {% if is_distributed %}
+      {{ drop_relation_if_exists(distributed_new_data_relation) }}
+      {{ drop_relation_if_exists(distributed_intermediate_relation) }}
+    {% endif %}
 
 {% endmacro %}