Propagate Gotra
Set gotra on a person and cascade it through all their descendants who currently have no gotra (or override all descendants). Uses network.propagate_gotra().
Propagate Native Place (full table)
Copies nativeplace_id from every father to his children who have none — across the entire database in one pass. Safe — only fills nulls, never overwrites existing values.
Fill missing parent from marriages
For children who have only one parent linked: if that parent has exactly one entry in the marriages table the other spouse is unambiguous and is filled in automatically. Children whose known parent has multiple marriages are skipped. Safe — only fills nulls, never overwrites.