feat: to allow to set grace period for mv

Author: AlexandrKhabarov

.changes/unreleased/Features-20250310-155741.yaml

@@ -0,0 +1,7 @@
+kind: Features
+body: To allow to set grace period for mv
+time: 2025-03-10T15:57:41.485966118+03:00
+custom:
+    Author: AlexandrKhabarov
+    Issue: ""
+    PR: "472"

dbt/include/trino/macros/materializations/materialized_view.sql

@@ -1,5 +1,9 @@
 {%- macro trino__get_create_materialized_view_as_sql(target_relation, sql) -%}
   create materialized view {{ target_relation }}
+  {%- set grace_period = config.get('grace_period') %}
+  {%- if grace_period is not none %}
+    grace period {{ grace_period }}
+  {%- endif %}
     {{ properties() }}
   as
   {{ sql }}

tests/functional/adapter/materialization/test_materialized_view.py

@@ -3,6 +3,7 @@
     check_relation_types,
     check_relations_equal,
     run_dbt,
+    run_dbt_and_capture,
     run_sql_with_adapter,
 )
 
@@ -280,3 +281,44 @@ def test_set_mv_properties(self, project):
         sql = f"SHOW CREATE MATERIALIZED VIEW {catalog}.{schema}.mat_view"
         results = run_sql_with_adapter(project.adapter, sql, fetch="all")
         assert "format = 'PARQUET'" in results[0][0]
+
+
+@pytest.mark.iceberg
+class TestIcebergMaterializedViewWithGracePeriod(TestIcebergMaterializedViewBase):
+    # Configuration in dbt_project.yml
+    @pytest.fixture(scope="class")
+    def project_config_update(self):
+        return {
+            "name": "mv_test",
+            "models": {
+                "+materialized": "materialized_view",
+                "+grace_period": "INTERVAL '3' SECOND",
+            },
+        }
+
+    # Everything that goes in the "seeds" directory
+    @pytest.fixture(scope="class")
+    def seeds(self):
+        return {
+            "seed.csv": seed_csv,
+        }
+
+    # Everything that goes in the "models" directory
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "mat_view.sql": model_sql,
+        }
+
+    def test_set_mv_properties(self, project):
+        # Seed seed
+        results = run_dbt(["seed"], expect_pass=True)
+        assert len(results) == 1
+
+        # Create MV
+        results, log_output = run_dbt_and_capture(["run", "--debug"], expect_pass=True)
+        assert len(results) == 1
+        assert "grace period INTERVAL '3' SECOND" in log_output
+
+        # Check if MVs were created correctly
+        check_relation_types(project.adapter, {"mat_view": "materialized_view"})