How to get "," instead of "and" in the rows in SQL Server - sql-server

Question

I have a table Test with 1 column
Module_name
Table
Computer
Laptop
Chair
My expected output:
Table,Computer,Laptop and Chair
My Query:
declare #module_name varchar(50)
SELECT #Module_Name = COALESCE(#Module_Name + ' and ', '') + module_name FROM
(SELECT DISTINCT module_name FROM Test) T
select #module_name
I am getting the output as:
Table and Computer and Laptop and Chair
My concern is how to get the "," instead of "and".

Answer 1

Have you tried xml method with stuff() function ?
declare #Module_names varchar(max)
set #Module_names = stuff((select distinct ',' +Module_name
from table t
for xml path('')),1,1, '')
select REVERSE(STUFF(REVERSE(#Module_names),
CHARINDEX(',', REVERSE(#Module_names)), 1,' dna ')) as Module_names

Answer 2

I don't endorse this solution, like I said in the comments, "grammarisation" should be done in your presentation layer.. You can, however, achieve this in SQL like so:
Edit: Slight update to cater for a single value return.
CREATE TABLE #Sample (Module varchar(10));
INSERT INTO #Sample
VALUES ('Table'),
('Computer'),
('Laptop'),
('Chair');
GO
WITH RNs AS (
SELECT Module,
ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) AS RN --SELECT NULL as there is no ID field to work with here, thus the order will be random
FROM #Sample)
SELECT STUFF((SELECT CASE WHEN RN = MAX(RN) OVER () AND RN != 1 THEN ' and ' ELSE ', ' END + Module
FROM RNs
ORDER BY RN
FOR XML PATH('')),1,2,'');
GO
DROP TABLE #Sample;

Answer 3

Use the following. First gather all records together with comma, then replace just the last one with "and". Will have to make sure that your column values don't contain comma or it will be misplaced with an "and" if on last occurence.
DECLARE #result VARCHAR(MAX) = STUFF(
(
SELECT DISTINCT
', ' + T.module_name
FROM
Test AS T
FOR XML
PATH('')
),
1, 2, '')
SET #result =
REVERSE(
STUFF( -- Replace
REVERSE(#result), -- ... in the reversed string
CHARINDEX(',', REVERSE(#result)), -- ... at the first position of the comma (the last one on the original string)
1, -- just 1 character (the comma)
'dna ') -- for the reversed " and"
)
SELECT #result

Answer 4

Used Row_number to capture last row,
CREATE TABLE test
([Module_name] varchar(8))
;
INSERT INTO test
([Module_name])
VALUES
('Table'),
('Computer'),
('Laptop'),
('Chair')
;
SELECT STUFF((SELECT CASE WHEN RN = MAX(RN) OVER () THEN ' and ' ELSE ', ' END + Module_name
from
(
SELECT Module_name,
ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) AS RN
FROM test
) rns
ORDER BY RN
FOR XML PATH('')),1,2,'');