fix unnecessary imports for CloudSQL hook

airflow/providers/google/cloud/hooks/cloud_sql.py

@@ -59,8 +59,6 @@
  GoogleBaseHook,
  get_field,
 )
-from airflow.providers.mysql.hooks.mysql import MySqlHook
-from airflow.providers.postgres.hooks.postgres import PostgresHook
 from airflow.utils.log.logging_mixin import LoggingMixin
 
 if TYPE_CHECKING:
@@ -856,7 +854,7 @@ def __init__(
  # Port and socket path and db_hook are automatically generated
  self.sql_proxy_tcp_port = None
  self.sql_proxy_unique_path: str | None = None
- self.db_hook: PostgresHook | MySqlHook | None = None
+ self.db_hook: BaseHook | None = None
  self.reserved_tcp_socket: socket.socket | None = None
  # Generated based on clock + clock sequence. Unique per host (!).
  # This is important as different hosts share the database
@@ -1140,22 +1138,28 @@ def get_sqlproxy_runner(self) -> CloudSqlProxyRunner:
  gcp_conn_id=self.gcp_conn_id,
  )
 
- def get_database_hook(self, connection: Connection) -> PostgresHook | MySqlHook:
+ def get_database_hook(self, connection: Connection) -> BaseHook:
  """
  Retrieve database hook.
 
  This is the actual Postgres or MySQL database hook that uses proxy or
  connects directly to the Google Cloud SQL database.
  """
  if self.database_type == "postgres":
- db_hook: PostgresHook | MySqlHook = PostgresHook(connection=connection, database=self.database)
+ from airflow.providers.postgres.hooks.postgres import PostgresHook
+
+ db_hook: BaseHook = PostgresHook(connection=connection, database=self.database)
  else:
+ from airflow.providers.mysql.hooks.mysql import MySqlHook
+
  db_hook = MySqlHook(connection=connection, schema=self.database)
  self.db_hook = db_hook
  return db_hook
 
  def cleanup_database_hook(self) -> None:
  """Clean up database hook after it was used."""
+ from airflow.providers.postgres.hooks.postgres import PostgresHook
+
  if self.database_type == "postgres":
  if not self.db_hook:
  raise ValueError("The db_hook should be set")