diff options
Diffstat (limited to 'lib/sqlalchemy/sql/schema.py')
| -rw-r--r-- | lib/sqlalchemy/sql/schema.py | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/schema.py b/lib/sqlalchemy/sql/schema.py index ce4182c54..5930df124 100644 --- a/lib/sqlalchemy/sql/schema.py +++ b/lib/sqlalchemy/sql/schema.py @@ -893,6 +893,18 @@ class Column(SchemaItem, ColumnClause): an explicit name, use the :class:`.UniqueConstraint` or :class:`.Index` constructs explicitly. + :param system: When ``True``, indicates this is a "system" column, + that is a column which is automatically made available by the + database, and should not be included in the columns list for a + ``CREATE TABLE`` statement. + + For more elaborate scenarios where columns should be conditionally + rendered differently on different backends, consider custom + compilation rules for :class:`.CreateColumn`. + + ..versionadded:: 0.8.3 Added the ``system=True`` parameter to + :class:`.Column`. + """ name = kwargs.pop('name', None) @@ -922,6 +934,7 @@ class Column(SchemaItem, ColumnClause): self.server_onupdate = kwargs.pop('server_onupdate', None) self.index = kwargs.pop('index', None) self.unique = kwargs.pop('unique', None) + self.system = kwargs.pop('system', False) self.quote = kwargs.pop('quote', None) self.doc = kwargs.pop('doc', None) self.onupdate = kwargs.pop('onupdate', None) |