SQL single row to multiple rows separated by comma - sql-server

Question

I would like to get a list of data from SQL Server including the data separated by comma in new rows.
Note : I have only single column name DATA
I have a value like
DATA
new
old,yes,now
ok,for
no
My required output is:
DATA
new
old
yes
now
ok
for
no

Answer 1

What you need is a split functions , Just see if this works for you
CREATE FUNCTION FNC_SPLIT(#MYSTR VARCHAR(500), #DELIMITER CHAR(1))
RETURNS #MYTBL TABLE (idx smallint, value varchar(8000))
AS
BEGIN
DECLARE #RET VARCHAR(500)
DECLARE #INDEX INT
DECLARE #COUNTER smallint
--Get the first position of delimiter in the main string
SET #INDEX = CHARINDEX(#DELIMITER,#MYSTR)
SET #COUNTER = 0
--Loop if delimiter exists in the main string
WHILE #INDEX > 0
BEGIN
--extract the result substring before the delimiter found
SET #RET = SUBSTRING(#MYSTR,1, #INDEX-1 )
--set mainstring right part after the delimiter found
SET #MYSTR = SUBSTRING(#MYSTR,#INDEX+1 , LEN(#MYSTR) - #INDEX )
--increase the counter
SET #COUNTER = #COUNTER + 1
--add the result substring to the table
INSERT INTO #MYTBL (idx, value)
VALUES (#COUNTER, #RET)
--Get the next position of delimiter in the main string
SET #INDEX = CHARINDEX(#DELIMITER,#MYSTR)
END
--if no delimiter is found then simply add the mainstring to the table
IF #INDEX = 0
BEGIN
SET #COUNTER = #COUNTER + 1
INSERT INTO #MYTBL (idx, value)
VALUES (#COUNTER, #MYSTR)
END
RETURN
END
GO
declare #table table(dt varchar(100));
insert into #table values
('DATA'),
('new'),
('old,yes,now'),
('ok,for');
select * from #table
select value from #table t cross apply dbo.FNC_SPLIT(t.dt,',')