Missing affector material paths imply improper Codification

[justmars]

Need a more robust method to check for missing values.

For instance, this SQL query reveals no missing statute ids after the updating function is completed:

select * from lex_tbl_codification_events_statute where affector_statute_id is null -- 0 rows

In contrast, the following material paths are missing from the same table:

select * from lex_tbl_codification_events_statute where affector_material_path is null group by statute -- 80 individual rows, but when group by is utilized, reveals that it involves 38 statutes