Add Manufacturer Search to nopCommerce's dbo.ProductLoadAllPaged (Not Working)

dbo.ProductLoadAllPaged.sql

USE [nopCommerce]
GO
/****** Object:  StoredProcedure [dbo].[ProductLoadAllPaged]    Script Date: 07/29/2016 10:28:58 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO


ALTER PROCEDURE [dbo].[ProductLoadAllPaged]
(
	@CategoryIds		nvarchar(MAX) = null,	--a list of category IDs (comma-separated list). e.g. 1,2,3
	@ManufacturerId		int = 0,
	@StoreId			int = 0,
	@VendorId			int = 0,
	@WarehouseId		int = 0,
	@ProductTypeId		int = null, --product type identifier, null - load all products
	@VisibleIndividuallyOnly bit = 0, 	--0 - load all products , 1 - "visible indivially" only
	@MarkedAsNewOnly	bit = 0, 	--0 - load all products , 1 - "marked as new" only
	@ProductTagId		int = 0,
	@FeaturedProducts	bit = null,	--0 featured only , 1 not featured only, null - load all products
	@PriceMin			decimal(18, 4) = null,
	@PriceMax			decimal(18, 4) = null,
	@Keywords			nvarchar(4000) = null,
	@SearchDescriptions bit = 0, --a value indicating whether to search by a specified "keyword" in product descriptions
	@SearchSku			bit = 0, --a value indicating whether to search by a specified "keyword" in product SKU
	@SearchProductTags  bit = 0, --a value indicating whether to search by a specified "keyword" in product tags
	@UseFullTextSearch  bit = 0,
	@FullTextMode		int = 0, --0 - using CONTAINS with <prefix_term>, 5 - using CONTAINS and OR with <prefix_term>, 10 - using CONTAINS and AND with <prefix_term>
	@FilteredSpecs		nvarchar(MAX) = null,	--filter by specification attribute options (comma-separated list of IDs). e.g. 14,15,16
	@LanguageId			int = 0,
	@OrderBy			int = 0, --0 - position, 5 - Name: A to Z, 6 - Name: Z to A, 10 - Price: Low to High, 11 - Price: High to Low, 15 - creation date
	@AllowedCustomerRoleIds	nvarchar(MAX) = null,	--a list of customer role IDs (comma-separated list) for which a product should be shown (if a subjet to ACL)
	@PageIndex			int = 0, 
	@PageSize			int = 2147483644,
	@ShowHidden			bit = 0,
	@OverridePublished	bit = null, --null - process "Published" property according to "showHidden" parameter, true - load only "Published" products, false - load only "Unpublished" products
	@LoadFilterableSpecificationAttributeOptionIds bit = 0, --a value indicating whether we should load the specification attribute option identifiers applied to loaded products (all pages)
	@FilterableSpecificationAttributeOptionIds nvarchar(MAX) = null OUTPUT, --the specification attribute option identifiers applied to loaded products (all pages). returned as a comma separated list of identifiers
	@TotalRecords		int = null OUTPUT,
	@SearchManufacturer	bit = 0 --a value indicating whether to search by a specified "keyword" in product SKU
)
AS
BEGIN
	
	/* Products that filtered by keywords */
	CREATE TABLE #KeywordProducts
	(
		[ProductId] int NOT NULL
	)

	DECLARE
		@SearchKeywords bit,
		@sql nvarchar(max),
		@sql_orderby nvarchar(max)

	SET NOCOUNT ON
	
	--filter by keywords
	SET @Keywords = isnull(@Keywords, '')
	SET @Keywords = rtrim(ltrim(@Keywords))
	IF ISNULL(@Keywords, '') != ''
	BEGIN
		SET @SearchKeywords = 1
		SET @SearchSku = 1
		SET @SearchManufacturer = 1
		
		IF @UseFullTextSearch = 1
		BEGIN
			--remove wrong chars (' ")
			SET @Keywords = REPLACE(@Keywords, '''', '')
			SET @Keywords = REPLACE(@Keywords, '"', '')
			
			--full-text search
			IF @FullTextMode = 0 
			BEGIN
				--0 - using CONTAINS with <prefix_term>
				SET @Keywords = ' "' + @Keywords + '*" '
			END
			ELSE
			BEGIN
				--5 - using CONTAINS and OR with <prefix_term>
				--10 - using CONTAINS and AND with <prefix_term>

				--clean multiple spaces
				WHILE CHARINDEX('  ', @Keywords) > 0 
					SET @Keywords = REPLACE(@Keywords, '  ', ' ')

				DECLARE @concat_term nvarchar(100)				
				IF @FullTextMode = 5 --5 - using CONTAINS and OR with <prefix_term>
				BEGIN
					SET @concat_term = 'OR'
				END 
				IF @FullTextMode = 10 --10 - using CONTAINS and AND with <prefix_term>
				BEGIN
					SET @concat_term = 'AND'
				END

				--now let's build search string
				declare @fulltext_keywords nvarchar(4000)
				set @fulltext_keywords = N''
				declare @index int		
		
				set @index = CHARINDEX(' ', @Keywords, 0)

				-- if index = 0, then only one field was passed
				IF(@index = 0)
					set @fulltext_keywords = ' "' + @Keywords + '*" '
				ELSE
				BEGIN		
					DECLARE @first BIT
					SET  @first = 1			
					WHILE @index > 0
					BEGIN
						IF (@first = 0)
							SET @fulltext_keywords = @fulltext_keywords + ' ' + @concat_term + ' '
						ELSE
							SET @first = 0

						SET @fulltext_keywords = @fulltext_keywords + '"' + SUBSTRING(@Keywords, 1, @index - 1) + '*"'					
						SET @Keywords = SUBSTRING(@Keywords, @index + 1, LEN(@Keywords) - @index)						
						SET @index = CHARINDEX(' ', @Keywords, 0)
					end
					
					-- add the last field
					IF LEN(@fulltext_keywords) > 0
						SET @fulltext_keywords = @fulltext_keywords + ' ' + @concat_term + ' ' + '"' + SUBSTRING(@Keywords, 1, LEN(@Keywords)) + '*"'	
				END
				SET @Keywords = @fulltext_keywords
			END
		END
		ELSE
		BEGIN
			--usual search by PATINDEX
			SET @Keywords = '%' + @Keywords + '%'
		END
		--PRINT @Keywords

		--product name
		SET @sql = '
		INSERT INTO #KeywordProducts ([ProductId])
		SELECT p.Id
		FROM Product p with (NOLOCK)
		WHERE '
		IF @UseFullTextSearch = 1
			SET @sql = @sql + 'CONTAINS(p.[Name], @Keywords) '
		ELSE
			SET @sql = @sql + 'PATINDEX(@Keywords, p.[Name]) > 0 '


		--localized product name
		SET @sql = @sql + '
		UNION
		SELECT lp.EntityId
		FROM LocalizedProperty lp with (NOLOCK)
		WHERE
			lp.LocaleKeyGroup = N''Product''
			AND lp.LanguageId = ' + ISNULL(CAST(@LanguageId AS nvarchar(max)), '0') + '
			AND lp.LocaleKey = N''Name'''
		IF @UseFullTextSearch = 1
			SET @sql = @sql + ' AND CONTAINS(lp.[LocaleValue], @Keywords) '
		ELSE
			SET @sql = @sql + ' AND PATINDEX(@Keywords, lp.[LocaleValue]) > 0 '
	

		IF @SearchDescriptions = 1
		BEGIN
			--product short description
			SET @sql = @sql + '
			UNION
			SELECT p.Id
			FROM Product p with (NOLOCK)
			WHERE '
			IF @UseFullTextSearch = 1
				SET @sql = @sql + 'CONTAINS(p.[ShortDescription], @Keywords) '
			ELSE
				SET @sql = @sql + 'PATINDEX(@Keywords, p.[ShortDescription]) > 0 '


			--product full description
			SET @sql = @sql + '
			UNION
			SELECT p.Id
			FROM Product p with (NOLOCK)
			WHERE '
			IF @UseFullTextSearch = 1
				SET @sql = @sql + 'CONTAINS(p.[FullDescription], @Keywords) '
			ELSE
				SET @sql = @sql + 'PATINDEX(@Keywords, p.[FullDescription]) > 0 '



			--localized product short description
			SET @sql = @sql + '
			UNION
			SELECT lp.EntityId
			FROM LocalizedProperty lp with (NOLOCK)
			WHERE
				lp.LocaleKeyGroup = N''Product''
				AND lp.LanguageId = ' + ISNULL(CAST(@LanguageId AS nvarchar(max)), '0') + '
				AND lp.LocaleKey = N''ShortDescription'''
			IF @UseFullTextSearch = 1
				SET @sql = @sql + ' AND CONTAINS(lp.[LocaleValue], @Keywords) '
			ELSE
				SET @sql = @sql + ' AND PATINDEX(@Keywords, lp.[LocaleValue]) > 0 '
				

			--localized product full description
			SET @sql = @sql + '
			UNION
			SELECT lp.EntityId
			FROM LocalizedProperty lp with (NOLOCK)
			WHERE
				lp.LocaleKeyGroup = N''Product''
				AND lp.LanguageId = ' + ISNULL(CAST(@LanguageId AS nvarchar(max)), '0') + '
				AND lp.LocaleKey = N''FullDescription'''
			IF @UseFullTextSearch = 1
				SET @sql = @sql + ' AND CONTAINS(lp.[LocaleValue], @Keywords) '
			ELSE
				SET @sql = @sql + ' AND PATINDEX(@Keywords, lp.[LocaleValue]) > 0 '
		END

		--SKU
		IF @SearchSku = 1
		BEGIN
			SET @sql = @sql + '
			UNION
			SELECT p.Id
			FROM Product p with (NOLOCK)
			WHERE '
			IF @UseFullTextSearch = 1
				SET @sql = @sql + 'CONTAINS(p.[Sku], @Keywords) '
			ELSE
				SET @sql = @sql + 'PATINDEX(@Keywords, p.[Sku]) > 0 '
		END

		IF @SearchProductTags = 1
		BEGIN
			--product tag
			SET @sql = @sql + '
			UNION
			SELECT pptm.Product_Id
			FROM Product_ProductTag_Mapping pptm with(NOLOCK) INNER JOIN ProductTag pt with(NOLOCK) ON pt.Id = pptm.ProductTag_Id
			WHERE '
			IF @UseFullTextSearch = 1
				SET @sql = @sql + 'CONTAINS(pt.[Name], @Keywords) '
			ELSE
				SET @sql = @sql + 'PATINDEX(@Keywords, pt.[Name]) > 0 '

			--localized product tag
			SET @sql = @sql + '
			UNION
			SELECT pptm.Product_Id
			FROM LocalizedProperty lp with (NOLOCK) INNER JOIN Product_ProductTag_Mapping pptm with(NOLOCK) ON lp.EntityId = pptm.ProductTag_Id
			WHERE
				lp.LocaleKeyGroup = N''ProductTag''
				AND lp.LanguageId = ' + ISNULL(CAST(@LanguageId AS nvarchar(max)), '0') + '
				AND lp.LocaleKey = N''Name'''
			IF @UseFullTextSearch = 1
				SET @sql = @sql + ' AND CONTAINS(lp.[LocaleValue], @Keywords) '
			ELSE
				SET @sql = @sql + ' AND PATINDEX(@Keywords, lp.[LocaleValue]) > 0 '
		END

		--Manufacturer
		IF @SearchManufacturer = 1
		BEGIN
			SET @sql = @sql + '
			UNION
			SELECT pmm.ProductId
			FROM Manufacturer m with (NOLOCK)
			JOIN Product_Manufacturer_Mapping pmm with (NOLOCK)
				ON pmm.ManufacturerId = m.Id
			WHERE '
			IF @UseFullTextSearch = 1
				--Toggle the below lines if you index these tables (Full-Text)
				--SET @sql = @sql + 'CONTAINS(m.[Name], @Keywords) '
				SET @sql = @sql + 'PATINDEX(@Keywords, m.[Name]) > 0 '
			ELSE
				SET @sql = @sql + 'PATINDEX(@Keywords, m.[Name]) > 0 '
		END

		--PRINT (@sql)
		EXEC sp_executesql @sql, N'@Keywords nvarchar(4000)', @Keywords

	END
	ELSE
	BEGIN
		SET @SearchKeywords = 0
	END

	--filter by category IDs
	SET @CategoryIds = isnull(@CategoryIds, '')	
	CREATE TABLE #FilteredCategoryIds
	(
		CategoryId int not null
	)
	INSERT INTO #FilteredCategoryIds (CategoryId)
	SELECT CAST(data as int) FROM [nop_splitstring_to_table](@CategoryIds, ',')	
	DECLARE @CategoryIdsCount int	
	SET @CategoryIdsCount = (SELECT COUNT(1) FROM #FilteredCategoryIds)

	--filter by customer role IDs (access control list)
	SET @AllowedCustomerRoleIds = isnull(@AllowedCustomerRoleIds, '')	
	CREATE TABLE #FilteredCustomerRoleIds
	(
		CustomerRoleId int not null
	)
	INSERT INTO #FilteredCustomerRoleIds (CustomerRoleId)
	SELECT CAST(data as int) FROM [nop_splitstring_to_table](@AllowedCustomerRoleIds, ',')
	
	--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 #DisplayOrderTmp 
	(
		[Id] int IDENTITY (1, 1) NOT NULL,
		[ProductId] int NOT NULL
	)

	SET @sql = '
	INSERT INTO #DisplayOrderTmp ([ProductId])
	SELECT p.Id
	FROM
		Product p with (NOLOCK)'
	
	IF @CategoryIdsCount > 0
	BEGIN
		SET @sql = @sql + '
		LEFT JOIN Product_Category_Mapping pcm with (NOLOCK)
			ON p.Id = pcm.ProductId'
	END
	
	IF @ManufacturerId > 0
	BEGIN
		SET @sql = @sql + '
		LEFT JOIN Product_Manufacturer_Mapping pmm with (NOLOCK)
			ON p.Id = pmm.ProductId'
	END
	
	IF ISNULL(@ProductTagId, 0) != 0
	BEGIN
		SET @sql = @sql + '
		LEFT JOIN Product_ProductTag_Mapping pptm with (NOLOCK)
			ON p.Id = pptm.Product_Id'
	END
	
	--searching by keywords
	IF @SearchKeywords = 1
	BEGIN
		SET @sql = @sql + '
		JOIN #KeywordProducts kp
			ON  p.Id = kp.ProductId'
	END
	
	SET @sql = @sql + '
	WHERE
		p.Deleted = 0'
	
	--filter by category
	IF @CategoryIdsCount > 0
	BEGIN
		SET @sql = @sql + '
		AND pcm.CategoryId IN (SELECT CategoryId FROM #FilteredCategoryIds)'
		
		IF @FeaturedProducts IS NOT NULL
		BEGIN
			SET @sql = @sql + '
		AND pcm.IsFeaturedProduct = ' + CAST(@FeaturedProducts AS nvarchar(max))
		END
	END
	
	--filter by manufacturer
	IF @ManufacturerId > 0
	BEGIN
		SET @sql = @sql + '
		AND pmm.ManufacturerId = ' + CAST(@ManufacturerId AS nvarchar(max))
		
		IF @FeaturedProducts IS NOT NULL
		BEGIN
			SET @sql = @sql + '
		AND pmm.IsFeaturedProduct = ' + CAST(@FeaturedProducts AS nvarchar(max))
		END
	END
	
	--filter by vendor
	IF @VendorId > 0
	BEGIN
		SET @sql = @sql + '
		AND p.VendorId = ' + CAST(@VendorId AS nvarchar(max))
	END
	
	--filter by warehouse
	IF @WarehouseId > 0
	BEGIN
		--we should also ensure that 'ManageInventoryMethodId' is set to 'ManageStock' (1)
		--but we skip it in order to prevent hard-coded values (e.g. 1) and for better performance
		SET @sql = @sql + '
		AND  
			(
				(p.UseMultipleWarehouses = 0 AND
					p.WarehouseId = ' + CAST(@WarehouseId AS nvarchar(max)) + ')
				OR
				(p.UseMultipleWarehouses > 0 AND
					EXISTS (SELECT 1 FROM ProductWarehouseInventory [pwi]
					WHERE [pwi].WarehouseId = ' + CAST(@WarehouseId AS nvarchar(max)) + ' AND [pwi].ProductId = p.Id))
			)'
	END
	
	--filter by product type
	IF @ProductTypeId is not null
	BEGIN
		SET @sql = @sql + '
		AND p.ProductTypeId = ' + CAST(@ProductTypeId AS nvarchar(max))
	END
	
	--filter by "visible individually"
	IF @VisibleIndividuallyOnly = 1
	BEGIN
		SET @sql = @sql + '
		AND p.VisibleIndividually = 1'
	END
	
	--filter by "marked as new"
	IF @MarkedAsNewOnly = 1
	BEGIN
		SET @sql = @sql + '
		AND p.MarkAsNew = 1
		AND (getutcdate() BETWEEN ISNULL(p.MarkAsNewStartDateTimeUtc, ''1/1/1900'') and ISNULL(p.MarkAsNewEndDateTimeUtc, ''1/1/2999''))'
	END
	
	--filter by product tag
	IF ISNULL(@ProductTagId, 0) != 0
	BEGIN
		SET @sql = @sql + '
		AND pptm.ProductTag_Id = ' + CAST(@ProductTagId AS nvarchar(max))
	END
	
	--"Published" property
	IF (@OverridePublished is null)
	BEGIN
		--process according to "showHidden"
		IF @ShowHidden = 0
		BEGIN
			SET @sql = @sql + '
			AND p.Published = 1'
		END
	END
	ELSE IF (@OverridePublished = 1)
	BEGIN
		--published only
		SET @sql = @sql + '
		AND p.Published = 1'
	END
	ELSE IF (@OverridePublished = 0)
	BEGIN
		--unpublished only
		SET @sql = @sql + '
		AND p.Published = 0'
	END
	
	--show hidden
	IF @ShowHidden = 0
	BEGIN
		SET @sql = @sql + '
		AND p.Deleted = 0
		AND (getutcdate() BETWEEN ISNULL(p.AvailableStartDateTimeUtc, ''1/1/1900'') and ISNULL(p.AvailableEndDateTimeUtc, ''1/1/2999''))'
	END
	
	--min price
	IF @PriceMin is not null
	BEGIN
		SET @sql = @sql + '
		AND (
				(
					--special price (specified price and valid date range)
					(p.SpecialPrice IS NOT NULL AND (getutcdate() BETWEEN isnull(p.SpecialPriceStartDateTimeUtc, ''1/1/1900'') AND isnull(p.SpecialPriceEndDateTimeUtc, ''1/1/2999'')))
					AND
					(p.SpecialPrice >= ' + CAST(@PriceMin AS nvarchar(max)) + ')
				)
				OR 
				(
					--regular price (price isnt specified or date range isnt valid)
					(p.SpecialPrice IS NULL OR (getutcdate() NOT BETWEEN isnull(p.SpecialPriceStartDateTimeUtc, ''1/1/1900'') AND isnull(p.SpecialPriceEndDateTimeUtc, ''1/1/2999'')))
					AND
					(p.Price >= ' + CAST(@PriceMin AS nvarchar(max)) + ')
				)
			)'
	END
	
	--max price
	IF @PriceMax is not null
	BEGIN
		SET @sql = @sql + '
		AND (
				(
					--special price (specified price and valid date range)
					(p.SpecialPrice IS NOT NULL AND (getutcdate() BETWEEN isnull(p.SpecialPriceStartDateTimeUtc, ''1/1/1900'') AND isnull(p.SpecialPriceEndDateTimeUtc, ''1/1/2999'')))
					AND
					(p.SpecialPrice <= ' + CAST(@PriceMax AS nvarchar(max)) + ')
				)
				OR 
				(
					--regular price (price isnt specified or date range isnt valid)
					(p.SpecialPrice IS NULL OR (getutcdate() NOT BETWEEN isnull(p.SpecialPriceStartDateTimeUtc, ''1/1/1900'') AND isnull(p.SpecialPriceEndDateTimeUtc, ''1/1/2999'')))
					AND
					(p.Price <= ' + CAST(@PriceMax AS nvarchar(max)) + ')
				)
			)'
	END
	
	--show hidden and ACL
	IF @ShowHidden = 0
	BEGIN
		SET @sql = @sql + '
		AND (p.SubjectToAcl = 0 OR EXISTS (
			SELECT 1 FROM #FilteredCustomerRoleIds [fcr]
			WHERE
				[fcr].CustomerRoleId IN (
					SELECT [acl].CustomerRoleId
					FROM [AclRecord] acl with (NOLOCK)
					WHERE [acl].EntityId = p.Id AND [acl].EntityName = ''Product''
				)
			))'
	END
	
	--show hidden and filter by store
	IF @StoreId > 0
	BEGIN
		SET @sql = @sql + '
		AND (p.LimitedToStores = 0 OR EXISTS (
			SELECT 1 FROM [StoreMapping] sm with (NOLOCK)
			WHERE [sm].EntityId = p.Id AND [sm].EntityName = ''Product'' and [sm].StoreId=' + CAST(@StoreId AS nvarchar(max)) + '
			))'
	END
	
	--filter by specification attribution options
	SET @FilteredSpecs = isnull(@FilteredSpecs, '')	
	CREATE TABLE #FilteredSpecs
	(
		SpecificationAttributeOptionId int not null
	)
	INSERT INTO #FilteredSpecs (SpecificationAttributeOptionId)
	SELECT CAST(data as int) FROM [nop_splitstring_to_table](@FilteredSpecs, ',')
	DECLARE @SpecAttributesCount int	
	SET @SpecAttributesCount = (SELECT COUNT(1) FROM #FilteredSpecs)
	IF @SpecAttributesCount > 0
	BEGIN
		--do it for each specified specification option
		DECLARE @SpecificationAttributeOptionId int
		DECLARE cur_SpecificationAttributeOption CURSOR FOR
		SELECT [SpecificationAttributeOptionId]
		FROM [#FilteredSpecs]
		OPEN cur_SpecificationAttributeOption
		FETCH NEXT FROM cur_SpecificationAttributeOption INTO @SpecificationAttributeOptionId
		WHILE @@FETCH_STATUS = 0
		BEGIN
			SET @sql = @sql + '
			AND p.Id in (select psam.ProductId from [Product_SpecificationAttribute_Mapping] psam with (NOLOCK) where psam.AllowFiltering = 1 and psam.SpecificationAttributeOptionId = ' + CAST(@SpecificationAttributeOptionId AS nvarchar(max)) + ')'
			--fetch next identifier
			FETCH NEXT FROM cur_SpecificationAttributeOption INTO @SpecificationAttributeOptionId
		END
		CLOSE cur_SpecificationAttributeOption
		DEALLOCATE cur_SpecificationAttributeOption
	END
	
	--sorting
	SET @sql_orderby = ''	
	IF @OrderBy = 5 /* Name: A to Z */
		SET @sql_orderby = ' p.[Name] ASC'
	ELSE IF @OrderBy = 6 /* Name: Z to A */
		SET @sql_orderby = ' p.[Name] DESC'
	ELSE IF @OrderBy = 10 /* Price: Low to High */
		SET @sql_orderby = ' p.[Price] ASC'
	ELSE IF @OrderBy = 11 /* Price: High to Low */
		SET @sql_orderby = ' p.[Price] DESC'
	ELSE IF @OrderBy = 15 /* creation date */
		SET @sql_orderby = ' p.[CreatedOnUtc] DESC'
	ELSE /* default sorting, 0 (position) */
	BEGIN
		--category position (display order)
		IF @CategoryIdsCount > 0 SET @sql_orderby = ' pcm.DisplayOrder ASC'
		
		--manufacturer position (display order)
		IF @ManufacturerId > 0
		BEGIN
			IF LEN(@sql_orderby) > 0 SET @sql_orderby = @sql_orderby + ', '
			SET @sql_orderby = @sql_orderby + ' pmm.DisplayOrder ASC'
		END
		
		--name
		IF LEN(@sql_orderby) > 0 SET @sql_orderby = @sql_orderby + ', '
		SET @sql_orderby = @sql_orderby + ' p.[Name] ASC'
	END
	
	SET @sql = @sql + '
	ORDER BY' + @sql_orderby
	
	--PRINT (@sql)
	EXEC sp_executesql @sql

	DROP TABLE #FilteredCategoryIds
	DROP TABLE #FilteredSpecs
	DROP TABLE #FilteredCustomerRoleIds
	DROP TABLE #KeywordProducts

	CREATE TABLE #PageIndex 
	(
		[IndexId] int IDENTITY (1, 1) NOT NULL,
		[ProductId] int NOT NULL
	)
	INSERT INTO #PageIndex ([ProductId])
	SELECT ProductId
	FROM #DisplayOrderTmp
	GROUP BY ProductId
	ORDER BY min([Id])

	--total records
	SET @TotalRecords = @@rowcount
	
	DROP TABLE #DisplayOrderTmp

	--prepare filterable specification attribute option identifier (if requested)
	IF @LoadFilterableSpecificationAttributeOptionIds = 1
	BEGIN		
		CREATE TABLE #FilterableSpecs 
		(
			[SpecificationAttributeOptionId] int NOT NULL
		)
		INSERT INTO #FilterableSpecs ([SpecificationAttributeOptionId])
		SELECT DISTINCT [psam].SpecificationAttributeOptionId
		FROM [Product_SpecificationAttribute_Mapping] [psam] with (NOLOCK)
		WHERE [psam].[AllowFiltering] = 1
		AND [psam].[ProductId] IN (SELECT [pi].ProductId FROM #PageIndex [pi])

		--build comma separated list of filterable identifiers
		SELECT @FilterableSpecificationAttributeOptionIds = COALESCE(@FilterableSpecificationAttributeOptionIds + ',' , '') + CAST(SpecificationAttributeOptionId as nvarchar(4000))
		FROM #FilterableSpecs

		DROP TABLE #FilterableSpecs
 	END

	--return products
	SELECT TOP (@RowsToReturn)
		p.*
	FROM
		#PageIndex [pi]
		INNER JOIN Product p with (NOLOCK) on p.Id = [pi].[ProductId]
	WHERE
		[pi].IndexId > @PageLowerBound AND 
		[pi].IndexId < @PageUpperBound
	ORDER BY
		[pi].IndexId
	
	DROP TABLE #PageIndex
END