# SQLAlchemy introduced generic types in version 2.0 making typing
-# inclompatiple with older versions. Add wrappers here so we don't have
+# incompatible with older versions. Add wrappers here so we don't have
# to litter the code with bare-string types.
if TYPE_CHECKING:
TypeAlias = str
SaSelect: TypeAlias = 'sa.Select[Any]'
+SaScalarSelect: TypeAlias = 'sa.ScalarSelect[Any]'
SaRow: TypeAlias = 'sa.Row[Any]'
-SaColumn: TypeAlias = 'sa.Column[Any]'
+SaColumn: TypeAlias = 'sa.ColumnElement[Any]'
+SaExpression: TypeAlias = 'sa.ColumnElement[bool]'
SaLabel: TypeAlias = 'sa.Label[Any]'
+SaFromClause: TypeAlias = 'sa.FromClause'
+SaSelectable: TypeAlias = 'sa.Selectable'
+SaBind: TypeAlias = 'sa.BindParameter[Any]'