ELSIF attr_def.phys_char_sf IS NOT NULL THEN -- a named Physical Characteristic, see config.marc21_physical_characteristic_*_map
SELECT m.value INTO attr_value
FROM biblio.marc21_physical_characteristics(NEW.id) v
- config.marc21_physical_characteristic_value_map m ON (m.id = v.value)
+ JOIN config.marc21_physical_characteristic_value_map m ON (m.id = v.value)
WHERE v.subfield = attr_def.phys_char_sf
LIMIT 1; -- Just in case ...