select
    'chart'             as component,
    'bar'               as type,
    TRUE                as stacked;
select
   'item 01'  as series,
   'item 01'  as label,
   10       as value;
select 
   'item 02'  as series,
   'item 02'  as label,
   20       as value;
select
   'item 10' as series,
   'item 10' as label,
   21       as value;