revert docs changes, pin databases, fix mypy

ormar/fields/model_fields.py

@@ -381,7 +381,6 @@ if TYPE_CHECKING:  # pragma: nocover
     def Boolean(**kwargs: Any) -> bool:
         pass
 
-
 else:
 
     class Boolean(ModelFieldFactory, int):
@@ -545,7 +544,6 @@ if TYPE_CHECKING:  # pragma: nocover # noqa: C901
     ) -> Union[str, bytes]:
         pass
 
-
 else:
 
     class LargeBinary(ModelFieldFactory, bytes):

ormar/queryset/queryset.py

@@ -18,6 +18,15 @@ import databases
 import sqlalchemy
 from sqlalchemy import bindparam
 
+try:
+    from sqlalchemy.engine import LegacyRow
+except ImportError:
+    if TYPE_CHECKING:
+
+        class LegacyRow(dict):  # type: ignore
+            pass
+
+
 import ormar  # noqa I100
 from ormar import MultipleMatches, NoMatch
 from ormar.exceptions import ModelPersistenceError, QueryDefinitionError
@@ -605,7 +614,9 @@ class QuerySet(Generic[T]):
             model_cls=self.model_cls,  # type: ignore
             exclude_through=exclude_through,
         )
-        column_map = alias_resolver.resolve_columns(columns_names=list(rows[0].keys()))
+        column_map = alias_resolver.resolve_columns(
+            columns_names=list(cast(LegacyRow, rows[0]).keys())
+        )
         result = [
             {column_map.get(k): v for k, v in dict(x).items() if k in column_map}
             for x in rows