perf: Optimize the speed of data querying

Author: XiaJunjie2020

backend/apps/datasource/crud/datasource.py

@@ -384,17 +384,19 @@ def get_table_schema(session: SessionDep, current_user: CurrentUser, ds: CoreDat
         else:
             schema_table += f", {table_comment}\n[\n"
 
-        field_list = []
-        for field in obj.fields:
-            field_comment = ''
-            if field.custom_comment:
-                field_comment = field.custom_comment.strip()
-            if field_comment == '':
-                field_list.append(f"({field.field_name}:{field.field_type})")
-            else:
-                field_list.append(f"({field.field_name}:{field.field_type}, {field_comment})")
-        schema_table += ",\n".join(field_list)
-        schema_table += '\n]\n'
+        if obj.fields:
+            field_list = []
+            for field in obj.fields:
+                field_comment = ''
+                if field.custom_comment:
+                    field_comment = field.custom_comment.strip()
+                if field_comment == '':
+                    field_list.append(f"({field.field_name}:{field.field_type})")
+                else:
+                    field_list.append(f"({field.field_name}:{field.field_type}, {field_comment})")
+            schema_table += ",\n".join(field_list)
+            schema_table += '\n]\n'
+
         t_obj = {"id": obj.table.id, "schema_table": schema_table}
         tables.append(t_obj)
         all_tables.append(t_obj)

backend/apps/datasource/crud/permission.py

@@ -37,6 +37,7 @@ def get_row_permission_filters(session: SessionDep, current_user: CurrentUser, d
                         if p_list is not None and u_list is not None and permission.id in p_list and (
                                 current_user.id in u_list or f'{current_user.id}' in u_list):
                             flag = True
+                            break
                     if flag:
                         res.append(transRecord2DTO(session, permission))
             where_str = transFilterTree(session, res, ds)
@@ -64,6 +65,7 @@ def get_column_permission_fields(session: SessionDep, current_user: CurrentUser,
                     if p_list is not None and u_list is not None and permission.id in p_list and (
                             current_user.id in u_list or f'{current_user.id}' in u_list):
                         flag = True
+                        break
                 if flag:
                     permission_list = json.loads(permission.permissions)
                     fields = filter_list(fields, permission_list)