update sql in batch (#24801)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: -LAN- <laipz8200@outlook.com>

api/services/model_load_balancing_service.py

@@ -3,7 +3,7 @@ import logging
 from json import JSONDecodeError
 from typing import Optional, Union
 
-from sqlalchemy import or_
+from sqlalchemy import or_, select
 
 from constants import HIDDEN_VALUE
 from core.entities.provider_configuration import ProviderConfiguration
@@ -322,16 +322,14 @@ class ModelLoadBalancingService:
         if not isinstance(configs, list):
             raise ValueError("Invalid load balancing configs")
 
-        current_load_balancing_configs = (
-            db.session.query(LoadBalancingModelConfig)
-            .where(
+        current_load_balancing_configs = db.session.scalars(
+            select(LoadBalancingModelConfig).where(
                 LoadBalancingModelConfig.tenant_id == tenant_id,
                 LoadBalancingModelConfig.provider_name == provider_configuration.provider.provider,
                 LoadBalancingModelConfig.model_type == model_type_enum.to_origin_model_type(),
                 LoadBalancingModelConfig.model_name == model,
             )
-            .all()
-        )
+        ).all()
 
         # id as key, config as value
         current_load_balancing_configs_dict = {config.id: config for config in current_load_balancing_configs}