diff options
Diffstat (limited to 'alembic/ddl/impl.py')
| -rw-r--r-- | alembic/ddl/impl.py | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/alembic/ddl/impl.py b/alembic/ddl/impl.py index 728d1da..f11d1ed 100644 --- a/alembic/ddl/impl.py +++ b/alembic/ddl/impl.py @@ -665,6 +665,27 @@ class DefaultImpl(metaclass=ImplMeta): bool(diff) or bool(metadata_identity) != bool(inspector_identity), ) + def create_index_sig(self, index: Index) -> Tuple[Any, ...]: + # order of col matters in an index + return tuple(col.name for col in index.columns) + + def _skip_functional_indexes(self, metadata_indexes, conn_indexes): + conn_indexes_by_name = {c.name: c for c in conn_indexes} + + for idx in list(metadata_indexes): + if idx.name in conn_indexes_by_name: + continue + iex = sqla_compat.is_expression_index(idx) + if iex: + util.warn( + "autogenerate skipping metadata-specified " + "expression-based index " + f"{idx.name!r}; dialect {self.__dialect__!r} under " + f"SQLAlchemy {sqla_compat.sqlalchemy_version} can't " + "reflect these indexes so they can't be compared" + ) + metadata_indexes.discard(idx) + def _compare_identity_options( attributes, metadata_io, inspector_io, default_io |