UniqueConstraint#

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

Bases: Constraint

Description of unique constraint.

Attributes Summary

`annotations`	Additional annotations for this constraint.
`columns`	List of columns in this constraint, all columns belong to the same table as the constraint itself.
`deferrable`	If `True` then this constraint will be declared as deferrable.
`description`	Constraint description.
`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.

columns: list[Column] = <dataclasses._MISSING_TYPE object>#: List of columns in this constraint, all columns belong to the same table as the constraint itself.

deferrable: bool = False#: If True then this constraint will be declared as deferrable.

description: str | None = None#: Constraint description.

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.