How to make pivot for features dynamically based on feature name and f

Question

I work on sql server 2019 i can't make pivot for feature values based on feature name .

i need to apply pivot dynamically because may be tomorrow add new features so it will depend on features on table .

for original part id i have 4 features as

ProgramMemoryOriginal,NumberCoresOriginal,NumberADCsOriginal,NumberDACsOriginal

for RecomendationPartId i have 4 features as

ProgramMemoryRecomended,NumberCoresRecomended,NumberADCsRecomended,NumberDACsRecomended

i need to pivot every feature value under every feature name so feature name will display horizontally

if features not exist or remaining for parts as part id 2081978 then it will display as null

code as below

CREATE TABLE #partsrecomendation([OrignalPartId] [int] NOT NULL,[RecomendationPartId] [int] NOT NULL) ON [PRIMARY]GOINSERT #partsrecomendation ([OrignalPartId], [RecomendationPartId]) VALUES (20819956,1595758)INSERT #partsrecomendation ([OrignalPartId], [RecomendationPartId]) VALUES (20819770,2081978)CREATE TABLE #TechnologyPlPartsFeaturValues([PartID] [int] NOT NULL,[FeatureID] [int] NULL,[FeatureName] [nvarchar](508) NOT NULL,[FeatureValue] [nvarchar](500) NOT NULL) ON [PRIMARY]GOINSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (20819956, 1500500021, N'ProgramMemoryOriginal', N'FLASH')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (20819956, 1500500011, N'NumberCoresOriginal', N'1')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (20819956, 1500500066, N'NumberADCsOriginal', N'2')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (20819956, 1500500081, N'NumberDACsOriginal', N'1')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (1595758, 1500500021, N'ProgramMemoryRecomended', N'Light')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (1595758, 1500500011, N'NumberCoresRecomended', N'12')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (1595758, 1500500066, N'NumberADCsRecomended', N'75')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (1595758, 1500500081, N'NumberDACsRecomended', N'90')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (20819770, 1500500021, N'ProgramMemoryOriginal', N'Silicon')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (20819770, 1500500011, N'NumberCoresOriginal', N'509')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (20819770, 1500500066, N'NumberADCsOriginal', N'701')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (20819770, 1500500081, N'NumberDACsOriginal', N'208')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (2081978, 1500500021, N'Program Memory TypeRecomended', N'Electricity')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (2081978, 1500500011, N'NumberCoresRecomended', N'72')INSERT #TechnologyPlPartsFeaturValues ([PartID], [FeatureID], [FeatureName], [FeatureValue]) VALUES (2081978, 1500500066, N'NumberADCsRecomended', N'925')

expected result

Rajanikant Hawaldar · Answer

DECLARE @sql VARCHAR ( MAX ) DECLARE @Orignal_Columns VARCHAR ( MAX ) DECLARE @Recomend_Columns VARCHAR ( MAX ) DECLARE @All_Columns VARCHAR ( MAX ) SELECT @Orignal_Columns= ISNULL (@Orignal_Columns+ ''  '' )+QUOTENAME(FeatureName) FROM #partsrecomendation P JOIN #TechnologyPlPartsFeaturValues T ON P.OrignalPartId=T.PartID GROUP BY FeatureName --PRINT @Orignal_Columns SELECT @Recomend_Columns= ISNULL (@Recomend_Columns+ ''  '' )+QUOTENAME(FeatureName) FROM #partsrecomendation P JOIN #TechnologyPlPartsFeaturValues T ON P.RecomendationPartId=T.PartID GROUP BY FeatureName --PRINT @Recomend_Columns SELECT @All_Columns= ISNULL (@All_Columns+ ''  '' )+QUOTENAME(FeatureName) FROM #TechnologyPlPartsFeaturValues GROUP BY FeatureIDFeatureName ORDER BY FeatureID --PRINT @All_Columns SET @sql=N' ; WITH Orignal AS ( SELECT * FROM ( SELECT OrignalPartId[FeatureName] [FeatureValue] FROM #partsrecomendation P JOIN #TechnologyPlPartsFeaturValues T ON P.OrignalPartId=T.PartID)O PIVOT( MAX (FeatureValue) FOR FeatureName IN ( '+@Orignal_Columns+' ))P )Recomend AS ( SELECT * FROM ( SELECT RecomendationPartId[FeatureName] [FeatureValue] FROM #partsrecomendation P JOIN #TechnologyPlPartsFeaturValues T ON P.RecomendationPartId=T.PartID)R PIVOT( MAX (FeatureValue) FOR FeatureName IN ( '+@Recomend_Columns+' ))P ) SELECT P.* '+@All_Columns+' FROM #partsrecomendation P JOIN Orignal O ON P.OrignalPartId=O.OrignalPartId JOIN Recomend R ON P.RecomendationPartId=R.RecomendationPartId ' EXEC (@sql)