sql - How can I SUM a COUNT(*) subquery to find two string values per ID? -


i'm trying build sql server query spit out numbers. specifically, need know how many people both pizza , soda displayed showing proper count relationship.

i have 2 tables this:

people:

1 andy        relative 2 jim         friend 3 anderson    friend 4 pamela      relative

likes:

1  pizza 1  soda 2  pizza 3  soda 4  pizza 4  soda

my desired output following. list of how many relatives , how many friends pizza , soda:

relative 2 friend   0

this pretty i'm @ wholly incorrect:

select     relation,    (select count(*) likes lik id = lik.id , pizzavalue = 'pizza')     +     (select count(*) likes lik id = lik.id , pizzavalue = 'soda')      dbo.people inner join     likes lik on ps.id = lik.id

try:

select relation, count(*)  people p join likes l1 on l1.id = p.id , pizzavalue = 'pizza' join likes l2 on l2.id = p.id , pizzavalue = 'soda' group relation

this first join person table likes table , leave every person likes both soda , pizza. group return single count per relation.


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