Consulta SQL para exibir vendas de produtos

--** Create test tables
DECLARE @SalesLog TABLE ( 
SalesID int IDENTITY(1,1) NOT NULL, 
MemoNo int NULL, 
ProductCode int NULL, 
Quantity int NULL, 
Price int NULL, 
ProductGroup int NULL)

DECLARE @Products TABLE( 
ProductId int IDENTITY(1,1) NOT NULL, 
pName nvarchar(50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL, 
pSize int NULL, 
pPrice int NULL, 
pPackQty int NULL, 
pGroup int NULL, 
pCode int NULL, 
pStock int NULL, 
pYrStock int NULL, 
pClearStock int NULL)

--** Setup test data
INSERT INTO @SalesLog ( MemoNo, ProductCode, Quantity, Price, ProductGroup)
SELECT   0, 1, 500, 0, 1 UNION
SELECT   0, 2, 700, 0, 1 UNION   
SELECT   0, 2, 333, 0, 1 UNION   
SELECT   0, 3, 200, 0, 2 UNION
SELECT   0, 4, 125, 0, 2 ;

INSERT INTO @Products (pName, pSize, pPrice, pPackQty, pGroup, pCode, pStock, pYrStock, pClearStock)
SELECT 'Beer', 350, 1 , 1, 1, 1, 0, 0, 0 UNION
SELECT 'Beer', 650, 1 , 1, 1, 2, 0, 0, 0 UNION
SELECT 'Beer', 1000, 1 , 1, 1, 3, 0, 0, 0 UNION
SELECT 'Wine', 750, 1 , 1, 2, 4, 0, 0, 0 UNION 
SELECT 'Wine', 1000, 1 , 1, 2, 5, 0, 0, 0 ;

--** Example query
SELECT t.pName AS 'Product'
     , MAX(CASE WHEN t.Col = 1 THEN t.pSize END) AS 'Item Size'
     , ISNULL(SUM(CASE WHEN t.Col = 1 THEN t.Quantity END),0) AS 'Quantity'
     , MAX(CASE WHEN t.Col = 2 THEN t.pSize END) AS 'Item Size'
     , ISNULL(SUM(CASE WHEN t.Col = 2 THEN t.Quantity END),0) AS 'Quantity'
     , MAX(CASE WHEN t.Col = 3 THEN t.pSize END) AS 'Item Size'
     , ISNULL(SUM(CASE WHEN t.Col = 3 THEN t.Quantity END),0) AS 'Quantity'
FROM (
SELECT pName
     , pCode
     , pGroup
     , pSize
     , sl.Quantity
     , DENSE_RANK() OVER(PARTITION BY p.pGroup ORDER BY p.pSize) AS Col
  FROM @Products AS p
  LEFT JOIN @SalesLog AS sl
    ON p.pGroup = sl.ProductGroup
   AND p.pCode = sl.ProductCode
     ) AS t
 GROUP BY t.pGroup
     , t.pName
;