- table.extract() and the sqlite-utils extract command now skip rows
where every extracted column is null: the new foreign key column is
left null and no all-null record is added to the lookup table. Rows
with at least one non-null extracted column are extracted as before.
- The extracts= option to insert() and friends keeps None values as
null instead of creating a lookup record for them - previously each
insert batch added a duplicate null row to the lookup table.
- table.lookup() compares values using IS rather than = so lookup
values containing None match existing rows correctly, instead of
inserting a duplicate row on every call.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
