TableSpec¶
- class lsst.daf.butler.ddl.TableSpec(fields: Iterable[FieldSpec], *, unique: Iterable[tuple[str, ...]] = (), indexes: Iterable[IndexSpec] = (), foreignKeys: Iterable[ForeignKeySpec] = (), exclusion: Iterable[tuple[str | type[TimespanDatabaseRepresentation], ...]] = (), recycleIds: bool = True, doc: str | None = None)¶
Bases:
object
A data class used to define a table or table-like query interface.
- Parameters:
- fields
Iterable
[FieldSpec
] Specifications for the columns in this table.
- unique
Iterable
[tuple
[str
] ], optional Non-primary-key unique constraints for the table.
- indexes
Iterable
[IndexSpec
], optional Indexes for the table.
- foreignKeys
Iterable
[ForeignKeySpec
], optional Foreign key constraints for the table.
- exclusion
Iterable
[tuple
[str
ortype
] ] Special constraints that prohibit overlaps between timespans over rows where other columns are equal. These take the same form as unique constraints, but each tuple may contain a single
TimespanDatabaseRepresentation
subclass representing a timespan column.- recycleIds
bool
, optional If
True
, allow databases that might normally recycle autoincrement IDs to do so (usually better for performance) on any autoincrement field in this table.- doc
str
, optional Documentation for the table.
- fields
Attributes Summary
Documentation for the table.
If
True
, allow databases that might normally recycle autoincrement IDs to do so (usually better for performance) on any autoincrement field in this table.Methods Summary
fromConfig
(config, *args, **kwargs)Attributes Documentation
- recycleIds: bool = True¶
If
True
, allow databases that might normally recycle autoincrement IDs to do so (usually better for performance) on any autoincrement field in this table.
Methods Documentation