Select row of data based on specific conditions from other columns - sql

Question

I have this data:
ID_OWN ID_PET KEY NAME
123 1 11 JOY
123 1 11 JOY
123 2 12 JOY
123 2 12 JOY
456 1 13 HELLO
456 1 13 MAMA
456 2 14 HELLO
456 2 14 MAMA
SCENARIO IS:
If I SELECT DISTINCT, ID_OWN 123 will return 2 rows of data.
But for ID_OWN 456, it will still return 4 rows of data, because column NAME has all different values.
What I want is, if NAME has different values under the same ID_OWN, then I want those NAME values to be sticked together, so it will return 2 rows of data too (or N rows of data based on no. of ID_PET under the same ID_OWN, in this case, they are 1 and 2)
Below is expected return data:
ID_OWN ID_PET KEY NAME
123 1 11 JOY
123 2 12 JOY
456 1 13 HELLO MAMA
456 2 14 HELLO MAMA

Answer 1

In SQL Server, You can achieve it in this way, demo on db<>fiddle
;WITH cte_TempTable AS (
SELECT DISTINCT ID_OWN, ID_PET, Key_Number, Name
FROM TempTable
)
SELECT DISTINCT ID_OWN, ID_PET, Key_Number, SUBSTRING(
(
SELECT ' ' + Name
FROM cte_TempTable C1
WHERE C1.ID_OWN = C2.ID_OWN AND C1.ID_PET = C2.ID_PET AND C1.Key_Number = C2.Key_Number
FOR XML PATH ('')
), 2, 1000) AS "nAME"
FROM cte_TempTable C2
Output
ID_OWN ID_PET Key_Number nAME
123 1 11 JOY
123 2 12 JOY
456 1 13 HELLO MAMA
456 2 14 HELLO MAMA

Answer 2

If it is MySQL, you can use GROUP_CONCAT as below-
DEMO HERE
SELECT ID_OWN,ID_PET,`Key`, group_CONCAT(NAME)
FROM (
SELECT DISTINCT ID_OWN,ID_PET,`Key`, NAME FROM your_table
)A
GROUP BY ID_OWN,ID_PET,`Key`

Answer 3

Use XML in combo with stuff
select distinct ID_OWN , ID_PET, [KEY],
STUFF((Select ' '+ NAME
from yourtable T1
where T1.ID_OWN =T2.ID_OWN and T1.ID_PET =T2.ID_PET and T1.[KEY] =T2.[KEY]
FOR XML PATH('')),1,1,'') as stickedName from yourtable T2
Output is:
ID_OWN ID_PET KEY stickedName
123 1 11 JOY
123 2 12 JOY
456 1 13 HELLO,MAMA
456 2 14 HELLO,MAMA