Zaujal jsem to, i když jsem si nebyl jistý, jak chcete vypočítat sloupec Procento rozdílu, takže se na to možná budete chtít podívat blíže.
CREATE TABLE #tempProduct
(
ID INT,
SellerName VARCHAR(100),
Total MONEY,
Availability VARCHAR(100),
Offer VARCHAR(100),
Competitors INT
)
INSERT INTO #tempProduct (ID, SellerName, Total, Availability, Offer)
SELECT DISTINCT p.id, pp.SellerName, pp.Price + ISNULL(pp.Shipping,0), pp.Available, pp.Offer
FROM Products p
JOIN Product_Price pp
ON p.id = pp.ProductId
-- Get Sears competitors
UPDATE tp
SET Competitors = pp.CompetitorCount
FROM #tempProduct tp
JOIN (
SELECT ProductId, COUNT(sellerName) [CompetitorCount]
FROM Product_Price
WHERE SellerName <> 'Sears' AND Price + ISNULL(Shipping,0) IS NOT NULL
GROUP BY ProductId
) pp
ON pp.ProductId = tp.ID
WHERE tp.SellerName = 'Sears'
SELECT DISTINCT
p.id,
p.ProductName,
p.ProductCategory,
p.ProductImage,
p.ProductUri,
stp.Total [SearsTotal],
stp.Availability [SearsAvailability],
stp.Offer [SearsOffer],
stp.Competitors [#Competitors],
100 - (((ISNULL(etp.Total,0) + ISNULL(atp.Total, 0))/stp.Competitors)/stp.Total) * 100 [DifferencePercentage(Sears & others)], -- Not sure how you want to calculate price difference
atp.Total,
atp.Availability [AmazonTotal],
atp.Offer [AmazonOffer],
etp.Total [eBayTotal],
etp.Availability [eBayAvailability],
etp.Offer [eBayOffer]
FROM Products p
JOIN Product_Price pp
ON pp.ProductId = p.ID
JOIN #tempProduct stp
ON stp.ID = p.id
JOIN #tempProduct etp
ON etp.ID = p.id
JOIN #tempProduct atp
ON atp.ID = p.id
WHERE stp.SellerName = 'Sears'
AND etp.SellerName = 'eBay'
AND atp.SellerName = 'Amazon'