Check the below input data and expected output to merge the driven car’s data like which car has driven by which drivers and form the aggregate the result for the same car.

Input Data:

CarName    Rout                 Driver     Year
---------- -------------------- ---------- -----------
Mobilio    hyd - ahd            Anvesh     2017
HCity      ahd - raj            Mukesh     2016
Mobilio    kadi - abu           Mukesh     2016
Duster     mha - dlh            Nupur      2017
Duster     hyd - ahd            Anvesh     2016
Duster     bha - ahd            Manish     2015

Expected Output:

CarName    DrivenDetails
---------- ------------------------------------------------------------------------------------------------------
Duster     Rout:mha - dlh, driven by Nupur in Year  2017, Rout:hyd - ahd, driven by Anvesh in Year  2016, Rout:bha - ahd, driven by Manish in Year  2015
HCity      Rout:ahd - raj, driven by Mukesh in Year  2016
Mobilio    Rout:hyd - ahd, driven by Anvesh in Year  2017, Rout:kadi - abu, driven by Mukesh in Year  2016

Create a table with sample data:

CREATE TABLE Cars 
(
	CarName VARCHAR(10)
	,Rout VARCHAR(20)
	,Driver VARCHAR(10)
	,Year INT
)
GO
 
INSERT INTO Cars VALUES
('Mobilio','hyd - ahd', 'Anvesh',2017)
,('HCity','ahd - raj', 'Mukesh',2016)
,('Mobilio','kadi - abu', 'Mukesh',2016)
,('Duster','mha - dlh', 'Nupur',2017)
,('Duster','hyd - ahd', 'Anvesh',2016)
,('Duster','bha - ahd', 'Manish',2015)
GO

Solution:

SELECT b.CarName 
	,STUFF 
	((
	SELECT ', Rout:' + Rout + ', driven by ' + CAST(Driver AS VARCHAR(MAX)) + ' in Year  ' + CAST(Year AS VARCHAR(MAX))
	FROM Cars a
	WHERE ( a.CarName = b.CarName )
	FOR XML PATH('')
	) ,1,2,'') 
	AS DrivenDetails
FROM Cars b
GROUP BY b.CarName

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