Feature/create indexes

CHANGELOG.md

@@ -1,3 +1,18 @@
+### Next Version
+
+#### New Features
+* [ClickHouse indexes](https://clickhouse.com/docs/en/optimize/sparse-primary-indexes) are now fully supported for `table` materialization.
+The index config should be added to the model config. for instance: 
+  ```python
+  {{ config(
+         materialized='%s',
+         indexes=[{
+            'name': 'your_index_name',
+            'definition': 'your_column TYPE minmax GRANULARITY 2'
+         }]
+  ) }}
+  ```
+
 ### Release [1.8.7], 2025-01-05
 
 ### New Features

dbt/include/clickhouse/macros/materializations/table.sql

@@ -150,7 +150,9 @@
          {% if config.get('projections')%}
                 {{ projection_statement(relation) }}
          {% endif %}
-
+          {% if config.get('indexes') %}
+                {{ indexes_statement(relation) }}
+         {% endif %}
 
         {{ clickhouse__insert_into(relation, sql, has_contract) }}
     {%- endif %}
@@ -169,6 +171,16 @@
     {%- endfor %}
 {%- endmacro %}
 
+{% macro indexes_statement(relation) %}
+    {%- set indexes = config.get('indexes', default=[]) -%}
+
+    {%- for index in indexes %}
+         {% call statement('add_indexes') %}
+                ALTER TABLE {{ relation }} ADD INDEX {{ index.get('name') }} {{ index.get('definition') }}
+            {%endcall  %}
+    {%- endfor %}
+{%- endmacro %}
+
 {% macro create_table_or_empty(temporary, relation, sql, has_contract) -%}
     {%- set sql_header = config.get('sql_header', none) -%}