Different SQL Select query - sql

Question

I need to write SQL query in order to extract some data.
i have this data in my table:
ID Store Value
1 9921 NOK
2 9921 NOK1
3 9921 OK3
what i need is to get data from select query like this form:
9921 NOK,NOK1,OK3
Any help please ?

Answer 1

You can use STUFF:
SELECT DISTINCT Store,
STUFF((SELECT ',' + Value
FROM Your_Table
WHERE Store = 9921
FOR XML PATH('')), 1, 1, '')
FROM Your_Table

Answer 2

Try to accomplish your excepted output by using COALESCE;
Create a sample table for testing purpose
CREATE TABLE SampleData (id INT ,store INT ,value NVARCHAR(50))
INSERT INTO SampleData VALUES (1 ,9921 ,'NOK')
INSERT INTO SampleData VALUES (2 ,9921 ,'NOK1')
INSERT INTO SampleData VALUES (3 ,9921 ,'NOK2')
Create a Scalar-Valued Function
Alter FUNCTION fun_GetCombinedData
(
#store int
)
RETURNS nvarchar(max)
AS
BEGIN
-- Declare the return variable here
DECLARE #CombineValue nvarchar(max)
SELECT #CombineValue = COALESCE(#CombineValue + ', ', '') + value
FROM SampleData where store=#store
RETURN #CombineValue
END
GO
Final Query,
SELECT store
,dbo.fun_GetCombinedData(store) AS value
FROM SampleData
GROUP BY store
Expected Output:
store | value
------------------------
9921 | NOK,NOK1,NOK2
This is one of the way to simplify your select query.

Answer 3

Using T-SQL we can do it this way:
declare #store int = 9921, #values varchar(max) = ''
select #values = #values
+ case
when #values = '' then ''
else ','
end + value
from table_name
where store = #store
order by id
select #store, #values

Answer 4

Go through this below example
Demo: [SQLFiddle]
The SQL I used is as below,
SELECT
store,
STUFF(
(SELECT DISTINCT ',' + value
FROM SampleData
WHERE store = a.store
FOR XML PATH (''))
, 1, 1, '') AS CombineValues
FROM SampleData AS a
GROUP BY store
you will see your expected result as "CombineValues"
store CombineValues
9921 NOK,NOK1,NOK2