Combine multiple rows into multiple columns dynamically in SQL Server

Question

I have a large database table on which I need to perform the action below dynamically using Microsoft SQL Server.

From a result like this:

 badge   |         


        

Answer 1

Combine multiple rows and columns in a row and group by ID

IF OBJECT_ID('usr_CUSTOMER') IS NOT NULL 
DROP TABLE usr_CUSTOMER

--------------------------CRATE TABLE---------------------------------------------------

GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[usr_CUSTOMER](
    [Last_Name] [nvarchar](50) NULL,
    [First_Name] [nvarchar](50) NULL,
    [Middle_Name] [nvarchar](50) NOT NULL,
    [ID] [int] NULL
) ON [PRIMARY]


GO
INSERT [dbo].[usr_CUSTOMER] ([Last_Name], [First_Name], [Middle_Name], [ID]) VALUES (N'gal', N'ornon', N'gili', 111)
GO
INSERT [dbo].[usr_CUSTOMER] ([Last_Name], [First_Name], [Middle_Name], [ID]) VALUES (N'porat', N'Yahel', N'LILl', 44444)
GO
INSERT [dbo].[usr_CUSTOMER] ([Last_Name], [First_Name], [Middle_Name], [ID]) VALUES (N'Shabtai', N'Or', N'Orya', 2222)
GO
INSERT [dbo].[usr_CUSTOMER] ([Last_Name], [First_Name], [Middle_Name], [ID]) VALUES (N'alex', N'levi', N'dolev', 33)
GO
INSERT [dbo].[usr_CUSTOMER] ([Last_Name], [First_Name], [Middle_Name], [ID]) VALUES (N'oren', N'cohen', N'ornini', 44444)
GO
INSERT [dbo].[usr_CUSTOMER] ([Last_Name], [First_Name], [Middle_Name], [ID]) VALUES (N'ron', N'ziyon', N'amir', 2222)
GO



----------------------------script---------------------------------------------

IF OBJECT_ID('tempdb..#TempString') IS NOT NULL 
DROP TABLE #TempString

IF OBJECT_ID('tempdb..#tempcount') IS NOT NULL 
DROP TABLE #tempcount

IF OBJECT_ID('tempdb..#tempcmbnition') IS NOT NULL 
        DROP TABLE #tempcmbnition
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

SELECT  ID,
    [Last_Name] + '#' + [First_Name] + '#' + ISNULL([Middle_Name], '')  as StringRow 
    INTO #TempString  
FROM [dbo].[usr_CUSTOMER]  
ORDER BY StringRow


select distinct id 
into #tempcount
from usr_CUSTOMER


CREATE TABLE [dbo].[#tempcmbnition](
        [ID] [int] NULL,
        [combinedString] [nvarchar](max) NULL
) 

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

DECLARE @tableID table(ID int)  
insert into @tableID(ID) (select distinct Id from #tempcount)

DECLARE @CNT int
SET @CNT = (select count(*) from @tableID)


declare @lastRow int
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


WHILE (@CNT  >=1 )
    BEGIN       

        SET @lastRow = (SELECT TOP 1 id FROM #tempcount ORDER BY id DESC)
        DECLARE @combinedString VARCHAR(MAX) 
        set @combinedString = ''
        SELECT  @combinedString = COALESCE(@combinedString + '^ ', '') + StringRow
        from #TempString
        where ID = @lastRow
        insert into #tempcmbnition (ID, [combinedString]) values(@lastRow ,@combinedString)
        SET @CNT = @CNT-1
        DELETE #tempcount where ID = @lastRow
    END
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
-- if you what remove first char
--  UPDATE #tempcmbnition 
--  SET combinedString = RIGHT(combinedString, LEN(combinedString) - 1)
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

select *from #TempString
select * from #tempcmbnition