Fixed #31333 -- Added BaseDatabaseIntrospection.get_table_description().

django/db/backends/base/introspection.py

@@ -54,6 +54,16 @@ class BaseDatabaseIntrospection:
         """
         raise NotImplementedError('subclasses of BaseDatabaseIntrospection may require a get_table_list() method')
 
+    def get_table_description(self, cursor, table_name):
+        """
+        Return a description of the table with the DB-API cursor.description
+        interface.
+        """
+        raise NotImplementedError(
+            'subclasses of BaseDatabaseIntrospection may require a '
+            'get_table_description() method.'
+        )
+
     def get_migratable_models(self):
         from django.apps import apps
         from django.db import router

tests/backends/base/test_introspection.py

@@ -16,6 +16,11 @@ class SimpleDatabaseIntrospectionTests(SimpleTestCase):
         with self.assertRaisesMessage(NotImplementedError, msg):
             self.introspection.get_table_list(None)
 
+    def test_get_table_description(self):
+        msg = self.may_require_msg % 'get_table_description'
+        with self.assertRaisesMessage(NotImplementedError, msg):
+            self.introspection.get_table_description(None, None)
+
     def test_get_sequences(self):
         msg = self.may_require_msg % 'get_sequences'
         with self.assertRaisesMessage(NotImplementedError, msg):