Max count SQL Server - sql

Question

I will explain my question with a practical example so that it is easier to visualize the issue. I have build this query:
Select
E.Tipo_Esp, F.Nome, F.Apelido,
count (Ac.id_acto) as total_consultas
from
Especialidade as E
right join
Funcionario as F on F.id_Esp = E.id_Esp
inner join
Acto as Ac on Ac.id_func = F.id_func
inner join
TipoActo as TA on TA.id_Tipo_acto = Ac.id_Tipo_acto
where
TA.Descricao_Acto = 'Consulta'
group by
E.Tipo_Esp, F.Nome, F.Apelido
order by
count(Ac.id_acto) DESC
to arrive to the following result:
Tipo_Esp Nome Apelido total_consultas
Ortopedia Maria Antonia 3
Ortopedia Luis Cruz 1
Cirurgia André Martins 2
Cirurgia Diogo Martins 1
However what I need to arrive is this:
Tipo_Esp Nome Apelido total_consultas
Ortopedia Maria Antonia 3
Cirurgia André Martins 2
meaning I only need the higher count for each "Tipo_Esp". I have tried to apply the max count function with the above query as a subquery but it did went well as expected. can someone help me with this issue please? thanks in advance

Answer 1

You could do this:
with orig as (
Select E.Tipo_Esp, F.Nome, F.Apelido, count (Ac.id_acto) as total_consultas from
Especialidade as E
right join Funcionario as F on F.id_Esp = E.id_Esp
inner join Acto as Ac on Ac.id_func = F.id_func
inner join TipoActo as TA on TA.id_Tipo_acto = Ac.id_Tipo_acto
WHERE TA.Descricao_Acto = 'Consulta'
GROUP BY E.Tipo_Esp, F.Nome, F.Apelido
ORDER BY count(Ac.id_acto) DESC
)
select o.*
from orig o
inner join (
select tipo_esp, max(total_consultas) as maxtotal
from orig
group by tipo_esp
) t on o.tipo_esp = t.tipo_esp and o.total_consultas = t.maxtotal