You will have to edit the stored procedure for loading products like this (the change is in bold and used to be ORDER BY do.DisplayOrder):
CREATE PROCEDURE [dbo].[Nop_ProductLoadAllPaged]
(
@CategoryID int = 0,
@ManufacturerID int = 0,
@FeaturedProducts bit = null, --0 featured only , 1 not featured only, null - load all products
@PriceMin money = null,
@PriceMax money = null,
@Keywords nvarchar(MAX),
@SearchDescriptions bit = 0,
@ShowHidden bit = 0,
@PageIndex int = 0,
@PageSize int = 2147483644,
@FilteredSpecs nvarchar(300) = null, --filter by attributes (comma-separated list). e.g. 14,15,16
@TotalRecords int = null OUTPUT
)
AS
BEGIN
--init
SET @Keywords = isnull(@Keywords, '')
SET @Keywords = '%' + rtrim(ltrim(@Keywords)) + '%'
SET @PriceMin = isnull(@PriceMin, 0)
SET @PriceMax = isnull(@PriceMax, 2147483644)
--display order
CREATE TABLE #DisplayOrder
(
ProductID int not null PRIMARY KEY,
DisplayOrder int not null
)
IF @CategoryID IS NOT NULL AND @CategoryID > 0
BEGIN
INSERT #DisplayOrder
SELECT pcm.ProductID, pcm.DisplayOrder
FROM [Nop_Product_Category_Mapping] pcm WHERE pcm.CategoryID = @CategoryID
END
ELSE IF @ManufacturerID IS NOT NULL AND @ManufacturerID > 0
BEGIN
INSERT #DisplayOrder
SELECT pmm.ProductID, pmm.Displayorder
FROM [Nop_Product_Manufacturer_Mapping] pmm WHERE pmm.ManufacturerID = @ManufacturerID
END
ELSE
BEGIN
INSERT #DisplayOrder
SELECT p.ProductID, 1
FROM [Nop_Product] p
ORDER BY p.[Name]
END
--filter by attributes
SET @FilteredSpecs = isnull(@FilteredSpecs, '')
CREATE TABLE #FilteredSpecs
(
SpecificationAttributeOptionID int not null
)
INSERT INTO #FilteredSpecs (SpecificationAttributeOptionID)
SELECT CAST(data as int) FROM dbo.[NOP_splitstring_to_table](@FilteredSpecs, ',');
DECLARE @SpecAttributesCount int
SELECT @SpecAttributesCount = COUNT(1) FROM #FilteredSpecs
--paging
DECLARE @PageLowerBound int
DECLARE @PageUpperBound int
DECLARE @RowsToReturn int
SET @RowsToReturn = @PageSize * (@PageIndex + 1)
SET @PageLowerBound = @PageSize * @PageIndex
SET @PageUpperBound = @PageLowerBound + @PageSize + 1
CREATE TABLE #PageIndex
(
IndexID int IDENTITY (1, 1) NOT NULL,
ProductID int NOT NULL,
DisplayOrder int NOT NULL,
)
INSERT INTO #PageIndex (ProductID, DisplayOrder)
SELECT DISTINCT p.ProductID, do.DisplayOrder
FROM Nop_Product p with (NOLOCK)
LEFT OUTER JOIN Nop_Product_Category_Mapping pcm with (NOLOCK) ON p.ProductID=pcm.ProductID
LEFT OUTER JOIN Nop_Product_Manufacturer_Mapping pmm with (NOLOCK) ON p.ProductID=pmm.ProductID
LEFT OUTER JOIN Nop_ProductVariant pv with (NOLOCK) ON p.ProductID = pv.ProductID
JOIN #DisplayOrder do on p.ProductID = do.ProductID
WHERE
(
(
@ShowHidden = 1 OR p.Published = 1
)
AND
(
@ShowHidden = 1 OR pv.Published = 1
)
AND
(
p.Deleted=0
)
AND (
@CategoryID IS NULL OR @CategoryID=0
OR (pcm.CategoryID=@CategoryID AND (@FeaturedProducts IS NULL OR pcm.IsFeaturedProduct=@FeaturedProducts))
)
AND (
@ManufacturerID IS NULL OR @ManufacturerID=0
OR (pmm.ManufacturerID=@ManufacturerID AND (@FeaturedProducts IS NULL OR pmm.IsFeaturedProduct=@FeaturedProducts))
)
AND (
pv.Price BETWEEN @PriceMin AND @PriceMax
)
AND (
patindex(@Keywords, isnull(p.name, '')) > 0
or patindex(@Keywords, isnull(pv.name, '')) > 0
or patindex(@Keywords, isnull(pv.sku , '')) > 0
or (@SearchDescriptions = 1 and patindex(@Keywords, isnull(p.ShortDescription, '')) > 0)
or (@SearchDescriptions = 1 and patindex(@Keywords, isnull(p.FullDescription, '')) > 0)
or (@SearchDescriptions = 1 and patindex(@Keywords, isnull(pv.Description, '')) > 0)
)
AND
(
@ShowHidden = 1
OR
(getutcdate() between isnull(pv.AvailableStartDateTime, '1/1/1900') and isnull(pv.AvailableEndDateTime, '1/1/2999'))
)
AND
(
--filter by specs
@SpecAttributesCount = 0
OR
(
NOT EXISTS(
SELECT 1
FROM #FilteredSpecs [fs]
WHERE [fs].SpecificationAttributeOptionID NOT IN (
SELECT psam.SpecificationAttributeOptionID
FROM dbo.Nop_Product_SpecificationAttribute_Mapping psam
WHERE psam.AllowFiltering = 1 AND psam.ProductID = p.ProductID
)
)
)
)
)
ORDER BY p.Name
--total records
SET @TotalRecords = @@rowcount
SET ROWCOUNT @RowsToReturn
--return
SELECT
p.*
FROM
#PageIndex [pi]
INNER JOIN Nop_Product p on p.ProductID = [pi].ProductID
WHERE
[pi].IndexID > @PageLowerBound AND
[pi].IndexID < @PageUpperBound
ORDER BY
IndexID
SET ROWCOUNT 0
DROP TABLE #DisplayOrder
DROP TABLE #FilteredSpecs
DROP TABLE #PageIndex
END
GO