How to avoid to duplicate a subquery in a query - sql-server

Question

I'm running a query that contains the same subquery two times, one used in a inner join condition and the another in a outer join. I'm highlighting the repeated subquery with **. How can I optimize this in order to run only once?
SELECT DISTINCT dbo.tb_contato.Nome, dbo.tb_contato.id_contato, dbo.tb_contato.Sexo, dbo.tb_contato.codigo, dbo.tb_email.email
FROM dbo.tb_contato INNER JOIN
dbo.tb_email ON dbo.tb_contato.id_contato = dbo.tb_email.id_contato INNER JOIN
dbo.tb_empresa ON dbo.tb_empresa.id_empresa = dbo.tb_contato.id_empresa LEFT OUTER JOIN
(SELECT dbo.tb_interacao.IDContato AS id_contato
FROM dbo.tb_interacao INNER JOIN
**(SELECT MAX(IDInteracao) AS IDIntMax, IDPerfilParticipante AS id_perfil_participante, IDProjeto, IDContato
FROM dbo.tb_interacao AS tb_interacao_2
GROUP BY IDPerfilParticipante, IDProjeto, IDContato)** AS IntMax1 ON dbo.tb_interacao.IDInteracao = IntMax1.IDIntMax INNER JOIN
dbo.tb_projeto ON dbo.tb_interacao.IDProjeto = dbo.tb_projeto.id_projeto INNER JOIN
dbo.tb_status_processo ON dbo.tb_interacao.IDStatusProcesso = dbo.tb_status_processo.id_status_processo
WHERE (dbo.tb_projeto.id_projeto = 2057) AND (dbo.tb_interacao.IDPerfilParticipante = 1) AND (dbo.tb_status_processo.id_status_processo = 7) OR
(dbo.tb_projeto.id_projeto = 2057) AND (dbo.tb_interacao.IDPerfilParticipante = 1) AND (dbo.tb_status_processo.id_status_processo = 6) OR
(dbo.tb_interacao.IDPerfilParticipante = 1) AND (dbo.tb_status_processo.id_status_processo = 6) AND (dbo.tb_projeto.id_grupo = 55) OR
(dbo.tb_interacao.IDPerfilParticipante = 1) AND (dbo.tb_status_processo.id_status_processo = 7) AND (dbo.tb_projeto.id_grupo = 55))
AS ConvidadosOut ON dbo.tb_contato.id_contato = ConvidadosOut.id_contato INNER JOIN
(SELECT tb_interacao_1.IDContato AS id_contato
FROM dbo.tb_interacao AS tb_interacao_1 INNER JOIN
**(SELECT MAX(IDInteracao) AS IDIntMax, IDPerfilParticipante AS id_perfil_participante, IDProjeto, IDContato
FROM dbo.tb_interacao AS tb_interacao_3
GROUP BY IDPerfilParticipante, IDProjeto, IDContato)** AS IntMax2 ON tb_interacao_1.IDInteracao = IntMax2.IDIntMax INNER JOIN
dbo.tb_projeto AS tb_projeto_1 ON tb_interacao_1.IDProjeto = tb_projeto_1.id_projeto INNER JOIN
dbo.tb_status_processo AS tb_status_processo_1 ON tb_interacao_1.IDStatusProcesso = tb_status_processo_1.id_status_processo
WHERE (tb_projeto_1.id_projeto = 181) AND (IntMax2.id_perfil_participante = 1) AND (tb_status_processo_1.id_status_processo = 4) OR
(tb_projeto_1.id_projeto = 1581) AND (IntMax2.id_perfil_participante = 1) AND (tb_status_processo_1.id_status_processo = 5) OR
(IntMax2.id_perfil_participante = 1) AND (tb_status_processo_1.id_status_processo = 6) AND (tb_projeto_1.id_grupo = 62)) AS ConvidadosIn ON
dbo.tb_contato.id_contato = ConvidadosIn.id_contato
WHERE (dbo.tb_email.email_visibility = 0 OR
dbo.tb_email.email_visibility IS NULL) AND (dbo.tb_empresa.id_pais = 1) AND (dbo.tb_contato.Fonte <> 'salesloft_orange' AND
dbo.tb_contato.Fonte <> 'salesloft_int_orange' OR
dbo.tb_contato.Fonte IS NULL) AND (dbo.tb_contato.id_contato_visibility = 1 OR
dbo.tb_contato.id_contato_visibility IS NULL) AND (ConvidadosOut.id_contato IS NULL)

Answer 1

I hope you are using SQL server 2005 or later. You can safely try using Common table expressions for the purpose as stated in your question.
Below is an example of script from adventureworks database:
USE AdventureWorks2008R2;
GO
-- Define the CTE expression name and column list.
WITH Sales_CTE (SalesPersonID, SalesOrderID, SalesYear)
AS
-- Define the CTE query.
(
SELECT SalesPersonID, SalesOrderID, YEAR(OrderDate) AS SalesYear
FROM Sales.SalesOrderHeader
WHERE SalesPersonID IS NOT NULL
)
-- Define the outer query referencing the CTE name.
SELECT SalesPersonID, COUNT(SalesOrderID) AS TotalSales, SalesYear
FROM Sales_CTE
GROUP BY SalesYear, SalesPersonID
ORDER BY SalesPersonID, SalesYear;
GO