select
extractvalue(value(d), '/hint') as outline_hints
from
xmltable('/*/outline_data/hint'
passing (
select
xmltype(other_xml) as xmlval
from
dba_hist_sql_plan
where
sql_id = '&sql_id'
and plan_hash_value = &plan_hash_value
and other_xml is not null
)
) d;
