==== Post v1.0 PINES-specific additions ====
  * For indexing consideration
    * field_class: subject, name: title, format: mods <code>//mods:mods/mods:subject/mods:title</code>  As a stop-gap measure to avoid having to reindex the entire dataset (and until Ingest gets partial indexing logic), after adding the xpath setting above: <code sql>
-- insert into metabib.subject_field_entry (field, source, value)
select
    -- (select id from config.metabib_field where field_class = 'subject' and name = 'title'),
    record,
    array_to_string( array_accum( value ), ' ' )
  from 
    metabib.full_rec
  where
    tag='630'
    and subfield in ('a','d','f','h','k','l','o','r')
  group by 1 --, 2
;
</code>Just uncomment the hidden bits to perform the insertion after testing.

==== Post v1.0 generic additions ====
  * New index type of "description"??  This would contain publisher info, physical description and date data, etc.  IOW, non-content info.