fix: Address performance regression introduced in #11785 (#20893)

.pylintrc

@@ -134,7 +134,9 @@ include-naming-hint=no
 
 # List of decorators that produce properties, such as abc.abstractproperty. Add
 # to this list to register other decorators that produce valid properties.
-property-classes=abc.abstractproperty
+property-classes=
+    abc.abstractproperty,
+    sqlalchemy.ext.hybrid.hybrid_property
 
 # Regular expression matching correct argument names
 argument-rgx=[a-z_][a-z0-9_]{2,30}$

superset/connectors/sqla/models.py

@@ -66,6 +66,7 @@ from sqlalchemy import (
     update,
 )
 from sqlalchemy.engine.base import Connection
+from sqlalchemy.ext.hybrid import hybrid_property
 from sqlalchemy.orm import backref, Query, relationship, RelationshipProperty, Session
 from sqlalchemy.orm.exc import NoResultFound
 from sqlalchemy.orm.mapper import Mapper
@@ -741,7 +742,7 @@ class SqlaTable(Model, BaseDatasource):  # pylint: disable=too-many-public-metho
         "MAX": sa.func.MAX,
     }
 
-    def __repr__(self) -> str:
+    def __repr__(self) -> str:  # pylint: disable=invalid-repr-returned
         return self.name
 
     @staticmethod
@@ -835,11 +836,9 @@ class SqlaTable(Model, BaseDatasource):  # pylint: disable=too-many-public-metho
             raise DatasetInvalidPermissionEvaluationException()
         return f"[{self.database}].[{self.table_name}](id:{self.id})"
 
-    @property
-    def name(self) -> str:
-        if not self.schema:
-            return self.table_name
-        return "{}.{}".format(self.schema, self.table_name)
+    @hybrid_property
+    def name(self) -> str:  # pylint: disable=invalid-overridden-method
+        return self.schema + "." + self.table_name if self.schema else self.table_name
 
     @property
     def full_name(self) -> str:

superset/views/core.py

@@ -1207,7 +1207,16 @@ class Superset(BaseSupersetView):  # pylint: disable=too-many-public-methods
             max_tables = max_items * len(tables) // total_items
             max_views = max_items * len(views) // total_items
 
-        dataset_tables = {table.name: table for table in database.tables}
+        extra_dict_by_name = {
+            table.name: table.extra_dict
+            for table in (
+                db.session.query(SqlaTable).filter(
+                    SqlaTable.name.in_(  # # pylint: disable=no-member
+                        f"{table.schema}.{table.table}" for table in tables
+                    )
+                )
+            ).all()
+        }
 
         table_options = [
             {
@@ -1216,9 +1225,7 @@ class Superset(BaseSupersetView):  # pylint: disable=too-many-public-methods
                 "label": get_datasource_label(tn),
                 "title": get_datasource_label(tn),
                 "type": "table",
-                "extra": dataset_tables[f"{tn.schema}.{tn.table}"].extra_dict
-                if (f"{tn.schema}.{tn.table}" in dataset_tables)
-                else None,
+                "extra": extra_dict_by_name.get(f"{tn.schema}.{tn.table}", None),
             }
             for tn in tables[:max_tables]
         ]