how to which person has all the things ? mysql -

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below table

person  things   tv   car   mobile   house b   tv c   tv c   car c   mobile c   house d   tv e   tv f   tv

above can see , c has things.

as per book example able find thing every person has ? using below query , 

select things tbl_happiness x  not exists  (  select person  tbl_happiness y  not exists  (  select 1 tbl_happiness z  z.person = y.person  , z.things = x.things  ) );

is possible use same query change in alias name , find

which person has things ?

i approach these "set-within-sets" queries using group by , having:

select person table t group person having count(distinct thing) = (select count(distinct thing) table t);

if there no duplicates, can use:

having count(*) = (select count(distinct thing) table t);

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