CheckConstraint

class lsst.dax.apdb.schema_model.CheckConstraint(name: str | None, id: str, deferrable: bool = False, initially: str | None = None, description: str | None = None, annotations: ~collections.abc.Mapping[str, ~typing.Any] = <factory>, expression: str = '')

Bases: Constraint

Description of check constraint.

Attributes Summary

annotations	Additional annotations for this constraint.
deferrable	If True then this constraint will be declared as deferrable.
description	Constraint description.
expression	Expression on one or more columns on the table, must be non-empty.
id	Felis ID for this constraint.
initially	Value for INITIALLY clause, only used of deferrable is True.
name	Constraint name.

Attributes Documentation

annotations: Mapping[str, Any] = <dataclasses._MISSING_TYPE object>

Additional annotations for this constraint.

deferrable: bool = False

If True then this constraint will be declared as deferrable.

description: str | None = None

Constraint description.

expression: str = ''

Expression on one or more columns on the table, must be non-empty.

id: str = <dataclasses._MISSING_TYPE object>

Felis ID for this constraint.

initially: str | None = None

Value for INITIALLY clause, only used of deferrable is True.

name: str | None = <dataclasses._MISSING_TYPE object>

Constraint name.