diff --git a/.changes/unreleased/Under the Hood-20230727-223848.yaml b/.changes/unreleased/Under the Hood-20230727-223848.yaml
new file mode 100644
index 000000000..8aa19a7d3
--- /dev/null
+++ b/.changes/unreleased/Under the Hood-20230727-223848.yaml	
@@ -0,0 +1,6 @@
+kind: Under the Hood
+body: Use execute instead of raw execute to add the query comment as query header
+time: 2023-07-27T22:38:48.258012+02:00
+custom:
+  Author: Kayrnt
+  Issue: "808"
diff --git a/dbt/adapters/bigquery/impl.py b/dbt/adapters/bigquery/impl.py
index 50ce21f11..9b8f5a112 100644
--- a/dbt/adapters/bigquery/impl.py
+++ b/dbt/adapters/bigquery/impl.py
@@ -399,7 +399,7 @@ def get_column_schema_from_query(self, sql: str) -> List[BigQueryColumn]:
         :param str sql: The sql to execute.
         :return: List[BigQueryColumn]
         """
-        _, iterator = self.connections.raw_execute(sql)
+        _, iterator = self.connections.execute(sql)
         columns = [self.Column.create_from_field(field) for field in iterator.schema]
         flattened_columns = []
         for column in columns:
@@ -411,7 +411,7 @@ def get_columns_in_select_sql(self, select_sql: str) -> List[BigQueryColumn]:
         try:
             conn = self.connections.get_thread_connection()
             client = conn.handle
-            query_job, iterator = self.connections.raw_execute(select_sql)
+            query_job, iterator = self.connections.execute(select_sql)
             query_table = client.get_table(query_job.destination)
             return self._get_dbt_columns_from_bq_table(query_table)