Separating comma delimeted values from a variable - sql-server

Question

I need the script as shown in the expected output but whatever i do, whatever i use, i end up with script shown in current output.
DECLARE #query varchar(max),
#col varchar(250) = 'd1,d2,d3'
Set #query = 'INSERT INTO [dbo].[MYTABLE](
'+#col+'
)
SELECT ''~N'' AS ['+#col+']'
print #query
current output
INSERT INTO [dbo].[MYTABLE](
d1,d2,d3
)
SELECT '~N' AS [d1,d2,d3]
Expected output
INSERT INTO [dbo].[MYTABLE](
d1,d2,d3
)
SELECT '~N' AS [d1],
'~N' AS [d2],
'~N' AS [d3]

Answer 1

Should work for any data split by comma and do what You wanted.
DECLARE #query varchar(max),
#col varchar(250) = 'd1,d2,d3', #word varchar(250) =''
Set #query = 'INSERT INTO [dbo].[MYTABLE](
'+#col+'
)'
while CHARINDEX( ',', #col)> 1
BEGIN
set #word = SUBSTRING(#col, 0,CHARINDEX(',', #col))
set #col = SUBSTRING(#col,CHARINDEX( ',', #col)+1, LEN(#col))
set #query = #query +
' SELECT ''~N'' AS ['+#word+']'
END
set #query = #query +
' SELECT ''~N'' AS ['+#col+']'
print #query

Answer 2

Your table output is wrong and this type of solutions doesn't scale,try simplfying your schema to avoid this..
At a high level,this can be achieved by
1.splitting comma seperated values which will return a column list
2.Then Convert column to rows..
Demo:
I used one of the split string functions from here..
--create table #temp
--(
--d1 varchar,
--d2 varchar,
--d3 varchar
--)
declare #q varchar(10)
set #q='d1,d2,d3'
;with cte
as
(select * from
[dbo].[SplitStrings_Numbers](#q,',')
)
insert into #temp
select
max(case when item='d1' then item end) as d1,
max(case when item='d2' then item end) as d2,
max(case when item='d3' then item end) as d3
from cte

Answer 3

DECLARE #query varchar(max),
`#col varchar(250) = 'd1,d2,d3',`
`#col1 varchar(250) = ''`
`Set #query = 'INSERT INTO [dbo].[MYTABLE](`
` '+#col+'`
` )' `
`SELECT #col=COALESCE(#col+',','')`
` WHILE(CHARINDEX(',',#col) > 0)`
<br/>
`BEGIN`
`SET #col1= left(#col, charindex(',', #col+',')-1)`
<br/>
`set #query=#query+'SELECT ''~N'' AS ['+#col1+'],'`
<br/>
`IF(CHARINDEX(',',#col) > 0 )`
<br/>
`BEGIN`
<br/>
`SET #col = STUFF(#col, 1, CHARINDEX(',', #col+''), '') `
<br/>
`END`
<br/>
`ELSE`<br/>
`IF(LEN(#col)>0)`<br/>
`BEGIN`<br/>
`SET #col = STUFF(#col, 1,LEN(#col) , '') ` <br/>
`END`<br/>
`END`<br/>
`SET #query = STUFF(#query, len(#query), 1, '') `<br/>
`print #query`

Answer 4

My answer
Declare #SQLString varchar(max)
Declare #SQLString2 varchar(max)
DECLARE #col_by_dim varchar(8000) = 'd1,d2,d3,d4',
#dim_name1 varchar(250) = 'CarrierEnrollment'
Set #SQLString = 'INSERT INTO [dbo].[zzz_'+#dim_name1+'](
'+#col_by_dim+'
)
Select '
DECLARE #pos INT
DECLARE #len INT
DECLARE #value varchar(8000)
set #pos = 0
set #len = 0
WHILE CHARINDEX(',', #col_by_dim, #pos+1)>0
BEGIN
set #len = CHARINDEX(',', #col_by_dim, #pos+1) - #pos
set #value = SUBSTRING(#col_by_dim, #pos, #len)
set #SQLString2 = '
''~N'' AS ['+#value+'],'
set #pos = CHARINDEX(',', #col_by_dim, #pos+#len) +1
Set #SQLString = #SQLString + #SQLString2
END
print #SQLString + '
''~N'' AS '+ '['+SUBSTRING(#col_by_dim, #pos, #len)+']'

Answer 5

DECLARE #query varchar(max),
#col varchar(250) = 'd1,d2,d3',#value varchar(max)
set #query='INSERT INTO [dbo].[MYTABLE](
'+#col+'
)
SELECT '
declare c cursor for
select val from Split(#col, ',')
open c
fetch next from c into #value
while ##FETCH_STATUS=0
begin
Set #query = #query+ '''~N'''+' AS ['+#value+']'+','+CHAR(13)+char(9)+char(9)+char(9)+char(9)+char(9)+char(9)+char(9)
fetch next from c into #value
end
close c
deallocate c
set #query= substring(#query,1,len(#query))
print #query