I have this SQL in SQL Server:
SELECT 
    Itens.Mercadoria, Mercadoria.Nome, Cabecalho.Data, 
    SUM(ValorUnitario) AS Total, 
    SUM(Quantidade) AS Quantidade
FROM 
    Itens 
INNER JOIN 
    Mercadoria ON Itens.Mercadoria = Mercadoria.Codigo 
INNER JOIN 
    Cabecalho ON Cabecalho.Codigo = Itens.Cabecalho 
WHERE 
    Cabecalho.Data >= '2016-01-01' 
    AND Cabecalho.Data <= '2018-12-31'
GROUP BY 
    Itens.Mercadoria, Mercadoria.Nome, Cabecalho.Data 
ORDER BY 
    4 DESC
It is returning the following result.
The highlighted values are repeating, I do not want to be repeated, I want to show only once each item and that the Quantidade and Total fields are SUM.
For example:
`Camisa Polo` -> **Quantidade = 23**
`Calça Jeans` -> **Quantidade = 15** 
`Camiseta Estampada` -> **Quantidade = 21**

 
     
    