select
        identity_public_id
        , data
        , i.created_at
        , i.deleted_at
from secd.identity       i
join secd.identity_email_validation iev using (identity_id)
join secd.email_validation          ev  using (email_validation_id)
join secd.email                     e   using (email_id)
where (($1 is null) or (i.identity_public_id = $1))
and   (($2 is null) or (e.address = $2));