fix(drill): no rows returned

setup.py

@@ -154,7 +154,7 @@ def get_git_sha() -> str:
         ],
         "db2": ["ibm-db-sa>0.3.8, <=0.4.0"],
         "dremio": ["sqlalchemy-dremio>=1.1.5, <1.3"],
-        "drill": ["sqlalchemy-drill==0.1.dev"],
+        "drill": ["sqlalchemy-drill>=1.1.4, <2"],
         "druid": ["pydruid>=0.6.5,<0.7"],
         "duckdb": ["duckdb-engine>=0.9.5, <0.10"],
         "dynamodb": ["pydynamodb>=0.4.2"],

superset/db_engine_specs/drill.py

@@ -14,8 +14,11 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
+
+from __future__ import annotations
+
 from datetime import datetime
-from typing import Any, Optional
+from typing import Any
 from urllib import parse
 
 from sqlalchemy import types
@@ -60,8 +63,8 @@
 
     @classmethod
     def convert_dttm(
-        cls, target_type: str, dttm: datetime, db_extra: Optional[dict[str, Any]] = None
-    ) -> Optional[str]:
+        cls, target_type: str, dttm: datetime, db_extra: dict[str, Any] | None = None
+    ) -> str | None:
         sqla_type = cls.get_sqla_column_type(target_type)
 
         if isinstance(sqla_type, types.Date):
@@ -76,8 +79,8 @@
         cls,
         uri: URL,
         connect_args: dict[str, Any],
-        catalog: Optional[str] = None,
-        schema: Optional[str] = None,
+        catalog: str | None = None,
+        schema: str | None = None,
     ) -> tuple[URL, dict[str, Any]]:
         if schema:
             uri = uri.set(database=parse.quote(schema.replace(".", "/"), safe=""))
@@ -89,15 +92,15 @@
         cls,
         sqlalchemy_uri: URL,
         connect_args: dict[str, Any],
-    ) -> Optional[str]:
+    ) -> str | None:
         """
         Return the configured schema.
         """
         return parse.unquote(sqlalchemy_uri.database).replace("/", ".")
 
     @classmethod
     def get_url_for_impersonation(
-        cls, url: URL, impersonate_user: bool, username: Optional[str]
+        cls, url: URL, impersonate_user: bool, username: str | None
     ) -> URL:
         """
         Return a modified URL with the username set.
@@ -117,3 +120,23 @@
                 )
 
         return url
+
+    @classmethod
+    def fetch_data(
+        cls,
+        cursor: Any,
+        limit: int | None = None,
+    ) -> list[tuple[Any, ...]]:
+        """
+        Custom `fetch_data` for Drill.
+
+        When no rows are returned, Drill raises a `RuntimeError` with the message
+        "generator raised StopIteration". This method catches the exception and
+        returns an empty list instead.
+        """
+        try:
+            return super().fetch_data(cursor, limit)
+        except RuntimeError as ex:
+            if str(ex) == "generator raised StopIteration":
+                return []
+            raise