ERROR:  query string argument of EXECUTE is null
CONTEXT:  PL/pgSQL function "facet_normalize_trigger" line 17 at EXECUTE statement
SQL statement "INSERT INTO metabib.facet_entry (field, source, value)
                VALUES (ind_data.field, ind_data.source, ind_data.value)"
PL/pgSQL function "reingest_metabib_field_entries" line 38 at SQL statement
SQL statement "SELECT metabib.reingest_metabib_field_entries(NEW.id)"
PL/pgSQL function "indexing_ingest_or_delete" line 139 at PERFORM