Re-writing a view that uses condition join [OR] - performance

Question

I have this view that is performing really bad, and the problem is its build on joins that use or conditions
I have tried re-writing this for the past 2 days, using CTE and UNION but the result is incorrect
Maybe you guys can help, just few ideas how to do it, because I am completely lost.
CREATE VIEW [dbo].[V_Amazon_Listings]
AS
SELECT
DISTINCT
ISNULL(a.MerchantId, b.MerchantId) AS MerchantId
, ISNULL(a.SKU, b.[seller-sku]) AS SKU
, ISNULL(a.Quantity, 0) AS NONFBAQTY
, ISNULL(b.[Quantity Available], 0) AS FBAQTY
, ISNULL(a.[ASIN], b.[ASIN]) AS [ASIN]
, CASE
WHEN salePrices.SKU IS NOT NULL THEN ISNULL(CONVERT(DECIMAL(18, 2), (salePrices.SalePrice * vamm.USDConversionRate)), 9999)
ELSE ISNULL(CONVERT(DECIMAL(18, 2), (a.Price * vamm.USDConversionRate)), 9999)
END AS Price
, CASE ISNULL(a.Quantity, 0)
WHEN 0 THEN ISNULL(b.[Quantity Available], 0)
ELSE ISNULL(a.Quantity, 0)
END AS Quantity
--a.ReportRequestId,
, CASE WHEN ISNULL(a.Quantity, 0) = 0 AND ISNULL(b.[Quantity Available], 0) > 0 THEN 1
ELSE 0
END AS IsFBAed
, CASE WHEN c.[seller-sku] IS NULL THEN 0
ELSE 1
END AS IsRestricted--,
--a.ReportRequestId RegReportRequestID, b.ReportRequestId FBAReportRequestID, c.ReportRequestID CancReportRequestID
FROM
(
SELECT
ID
, MerchantId
, SKU
, [ASIN]
, Price
, CASE Quantity
WHEN '' THEN 0
ELSE Quantity
END AS Quantity
, ReportRequestId
FROM dbo.Amazon_Listings_Raw WITH (NOLOCK)
WHERE RIGHT(SKU,4) <> '__ON'
AND ReportRequestId IN
(
SELECT
MAX(ReportRequestId)
FROM v_Amazon_Listings_Raw WITH (NOLOCK)
GROUP BY MerchantId
)
) AS a
FULL JOIN
(
SELECT
b.ID
, b.MerchantId
, b.[seller-sku]
, b.[fulfillment-channel-sku]
, b.[ASIN]
, b.[condition-type]
, b.[Warehouse-Condition-code]
, b.[Quantity Available]
, b.ReportRequestId
FROM dbo.[Amazon_FBA_Listings_Raw] AS b WITH (NOLOCK)
WHERE
ReportRequestId IN
(
SELECT
MAX(ReportRequestId)
FROM [v_Amazon_FBA_Listings_Raw] WITH (NOLOCK)
GROUP BY MerchantId
)
AND [Warehouse-Condition-code] = 'Sellable'
) AS b
ON a.MerchantId = b.MerchantId
AND a.SKU = b.[seller-sku]
LEFT JOIN
(
SELECT
ID
, MerchantId
, [item-name]
, [item-description]
, [seller-sku]
, Price
, Quantity
, [image-url]
, [item-is-marketplace]
, [product-id-type]
, [zshop-shipping-fee]
, [item-note]
, [item-condition]
, [zshop-category1]
, [zshop-browse-path]
, [zshop-storefront-feature]
, asin1
, asin2
, asin3
, [will-ship-internationally]
, [expedited-shipping]
, [zshop-boldface]
, [product-id]
, ReportRequestId
FROM dbo.[Amazon_Cancelled_Listings_Raw] WITH (NOLOCK)
WHERE RIGHT([seller-sku],4) <> '__ON'
AND ReportRequestId IN
(
SELECT MAX(ReportRequestId)
FROM [v_Amazon_Cancelled_Listings_Raw] WITH (NOLOCK)
GROUP BY MerchantId
)
) AS c
ON (a.MerchantId = c.MerchantId OR b.MerchantId = c.MerchantId)
AND (b.[seller-sku] = c.[seller-sku] OR a.SKU = c.[seller-sku])
INNER JOIN V_Amazon_Marketplace_Merchants vamm
ON (a.MerchantId = vamm.MerchantID OR b.MerchantId = vamm.MerchantId)
LEFT JOIN AmazonOurPrices salePrices WITH (NOLOCK)
ON vamm.MerchantId = salePrices.MerchantId
AND a.SKU = salePrices.SKU
AND salePrices.SalePrice <> salePrices.RegularPrice
This is what I have come up with, its runs really fast 20 seconds,
but the data is off, not sure what I am missing or doing wrong.
any help would be glady appreciated
CREATE VIEW AMZ_NOTUSED_12_22_2017
as
WITH A ( MerchantID,Sku,Asin,Price,Quantity, [Seller-Sku],SalePrice,USDConversionRate,salePricesSKU,[Quantity Available])
AS
(
SELECT a.MerchantId,a.SKU,a.ASIN,a.Price,a.Quantity, c.[seller-sku],salePrices.SalePrice,vamm.USDConversionRate,salePrices.SKU AS salePricesSKU,'' [Quantity Available]
FROM
(
SELECT
ID
, MerchantId
, SKU
, [ASIN]
, Price
, CASE Quantity
WHEN '' THEN 0
ELSE Quantity
END AS Quantity
, ReportRequestId
FROM dbo.Amazon_Listings_Raw WITH (NOLOCK)
WHERE RIGHT(SKU,4) <> '__ON'
AND ReportRequestId IN
(
SELECT
MAX(ReportRequestId)
FROM v_Amazon_Listings_Raw WITH (NOLOCK)
GROUP BY MerchantId
)
) AS a
LEFT JOIN
(
SELECT
ID
, MerchantId
, [item-name]
, [item-description]
, [seller-sku]
, Price
, Quantity
, [image-url]
, [item-is-marketplace]
, [product-id-type]
, [zshop-shipping-fee]
, [item-note]
, [item-condition]
, [zshop-category1]
, [zshop-browse-path]
, [zshop-storefront-feature]
, asin1
, asin2
, asin3
, [will-ship-internationally]
, [expedited-shipping]
, [zshop-boldface]
, [product-id]
, ReportRequestId
FROM dbo.[Amazon_Cancelled_Listings_Raw] WITH (NOLOCK)
WHERE RIGHT([seller-sku],4) <> '__ON'
AND ReportRequestId IN
(
SELECT MAX(ReportRequestId)
FROM [v_Amazon_Cancelled_Listings_Raw] WITH (NOLOCK)
GROUP BY MerchantId
)
) AS c
ON a.MerchantId = c.MerchantId and a.SKU = c.[seller-sku]
INNER JOIN V_Amazon_Marketplace_Merchants vamm
ON a.MerchantId = vamm.MerchantID
LEFT JOIN AmazonOurPrices salePrices WITH (NOLOCK)
ON vamm.MerchantId = salePrices.MerchantId
AND a.SKU = salePrices.SKU
AND salePrices.SalePrice <> salePrices.RegularPrice
)
,
B AS
(
SELECT b.MerchantId,
b.[Seller-SKU] AS Sku,
b.ASIN,
c.Price,
c.quantity ,
c.[seller-sku],
salePrices.SalePrice,
vamm.USDConversionRate,
salePrices.SKU AS salePricesSKU,
b.[Quantity Available]
FROM
(
SELECT
b.ID
, b.MerchantId
, b.[seller-sku]
, b.[fulfillment-channel-sku]
, b.[ASIN]
, b.[condition-type]
, b.[Warehouse-Condition-code]
, b.[Quantity Available]
, b.ReportRequestId
FROM dbo.[Amazon_FBA_Listings_Raw] AS b WITH (NOLOCK)
WHERE
ReportRequestId IN
(
SELECT
MAX(ReportRequestId)
FROM [v_Amazon_FBA_Listings_Raw] WITH (NOLOCK)
GROUP BY MerchantId
)
AND [Warehouse-Condition-code] = 'Sellable'
) AS b
LEFT JOIN
(
SELECT
ID
, MerchantId
, [item-name]
, [item-description]
, [seller-sku]
, Price
, Quantity
, [image-url]
, [item-is-marketplace]
, [product-id-type]
, [zshop-shipping-fee]
, [item-note]
, [item-condition]
, [zshop-category1]
, [zshop-browse-path]
, [zshop-storefront-feature]
, asin1
, asin2
, asin3
, [will-ship-internationally]
, [expedited-shipping]
, [zshop-boldface]
, [product-id]
, ReportRequestId
FROM dbo.[Amazon_Cancelled_Listings_Raw] WITH (NOLOCK)
WHERE RIGHT([seller-sku],4) <> '__ON'
AND ReportRequestId IN
(
SELECT MAX(ReportRequestId)
FROM [v_Amazon_Cancelled_Listings_Raw] WITH (NOLOCK)
GROUP BY MerchantId
)
) AS c
ON
b.[seller-sku] = c.[seller-sku] and b.MerchantId = c.MerchantId
INNER JOIN V_Amazon_Marketplace_Merchants vamm
ON b.MerchantId = vamm.MerchantId
LEFT JOIN AmazonOurPrices salePrices WITH(NOLOCK)
ON vamm.MerchantId = salePrices.MerchantId
AND b.[Seller-SKU] = salePrices.SKU
AND salePrices.SalePrice <> salePrices.RegularPrice
)
SELECT
DISTINCT
a.MerchantId AS MerchantId
, a.SKU
, a.Quantity AS NONFBAQTY
, ISNULL(a.[Quantity Available],0) AS FBAQTY
, a.[ASIN] AS [ASIN]
, CASE
WHEN salePricesSKU IS NOT NULL THEN ISNULL(CONVERT(DECIMAL(18, 2), (SalePrice * USDConversionRate)), 9999)
ELSE ISNULL(CONVERT(DECIMAL(18, 2), (a.Price * USDConversionRate)), 9999)
END AS Price
, CASE ISNULL(a.Quantity, 0)
WHEN 0 THEN ISNULL(a.[Quantity Available], 0)
ELSE ISNULL(a.Quantity, 0)
END AS Quantity
, CASE WHEN ISNULL(a.Quantity, 0) = 0 AND ISNULL(a.[Quantity Available], 0) > 0 THEN 1
ELSE 0
END AS IsFBAed
, CASE WHEN a.[seller-sku] IS NULL THEN 0
ELSE 1
END AS IsRestricted
FROM
(
SELECT * FROM a
UNION
SELECT * FRom B
) a