sqlalchemy.sql.schema.FetchedValue

class documentation

class FetchedValue(SchemaEventTarget):

A marker for a transparent database-side default.

Use .FetchedValue when the database is configured to provide some automatic default for a column.

E.g.:

Column('foo', Integer, FetchedValue())

Would indicate that some trigger or default generator will create a new value for the foo column during an INSERT.

See Also

Method	`__init__`	Undocumented
Method	`__repr__`	Undocumented
Method	`_as_for_update`	Undocumented
Method	`_clone`	Undocumented
Method	`_set_parent`	Associate with this SchemaEvent's parent object.
Class Variable	`has_argument`	Undocumented
Class Variable	`is_clause_element`	Undocumented
Class Variable	`is_server_default`	Undocumented
Class Variable	`reflected`	Undocumented
Instance Variable	`column`	Undocumented
Instance Variable	`for_update`	Undocumented

Inherited from SchemaEventTarget:

Method _set_parent_with_dispatch Undocumented

def __init__(self, for_update=False):

overridden in sqlalchemy.sql.schema.Computed, sqlalchemy.sql.schema.DefaultClause, sqlalchemy.sql.schema.Identity

Undocumented

def __repr__(self):

overridden in sqlalchemy.sql.schema.DefaultClause

Undocumented

def _as_for_update(self, for_update):

overridden in sqlalchemy.sql.schema.Computed, sqlalchemy.sql.schema.Identity

Undocumented

def _clone(self, for_update):

Undocumented

def _set_parent(self, column, **kw):

overrides sqlalchemy.sql.base.SchemaEventTarget._set_parent

overridden in sqlalchemy.sql.schema.Computed, sqlalchemy.sql.schema.Identity

Associate with this SchemaEvent's parent object.

has_argument: bool =

overridden in sqlalchemy.sql.schema.DefaultClause

Undocumented

is_clause_element: bool =

Undocumented

is_server_default: bool =

Undocumented

reflected: bool =

overridden in sqlalchemy.sql.schema.DefaultClause

Undocumented

column =

overridden in sqlalchemy.sql.schema.Computed, sqlalchemy.sql.schema.Identity

Undocumented

for_update =

Undocumented