Split SQL server string that has Decimal points into multiple Columns - sql

Question

I have the following table
Col
=========================
1270.8/847.2/254.16/106.9
And I would like to be split into columns like so:
Col1 Col2 Col3 Col4
============================================
1270.8 847.2 254.16 106.9
I have the code below, but it doesn't take the decimal into consideration.
Declare #Sample Table
(MachineName varchar(max))
Insert into #Sample
values ('1270.8/847.2/254.16');
SELECT
Reverse(ParseName(Replace(Reverse(MachineName), '/', ''), 1)) As [M1]
, Reverse(ParseName(Replace(Reverse(MachineName), '/', ''), 2)) As [M2]
, Reverse(ParseName(Replace(Reverse(MachineName), '/', ''), 3)) As [M3]
FROM #Sample

Answer 1

In SQL Server 2016+ you can use string_split().
In SQL Server pre-2016, using a CSV Splitter table valued function by Jeff Moden and conditional aggregation:
declare #Sample Table (id int not null identity(1,1), MachineName varchar(max));
insert into #Sample values ('1270.8/847.2/254.16'),('1270.8/847.2/254.16/106.9');
select
t.id
, m1 = max(case when s.ItemNumber = 1 then s.Item end)
, m2 = max(case when s.ItemNumber = 2 then s.Item end)
, m3 = max(case when s.ItemNumber = 3 then s.Item end)
, m4 = max(case when s.ItemNumber = 4 then s.Item end)
from #Sample t
cross apply dbo.delimitedsplit8K(MachineName,'/') s
group by id
rextester demo: http://rextester.com/WJVLB77682
returns:
+----+--------+-------+--------+-------+
| id | m1 | m2 | m3 | m4 |
+----+--------+-------+--------+-------+
| 1 | 1270.8 | 847.2 | 254.16 | NULL |
| 2 | 1270.8 | 847.2 | 254.16 | 106.9 |
+----+--------+-------+--------+-------+
splitting strings reference:
Tally OH! An Improved SQL 8K “CSV Splitter” Function - Jeff Moden
Splitting Strings : A Follow-Up - Aaron Bertrand
Split strings the right way – or the next best way - Aaron Bertrand
string_split() in SQL Server 2016 : Follow-Up #1 - Aaron Bertrand

Answer 2

Everyone should have a good split/parse function as illustrated by SQLZim (+1), but another option could be as follow:
Declare #YourTable table (ID int,Col varchar(max))
Insert Into #YourTable values
(1,'1270.8/847.2/254.16/106.9')
Select A.ID
,B.*
From #YourTable A
Cross Apply (
Select Col1 = xDim.value('/x[1]','float')
,Col2 = xDim.value('/x[2]','float')
,Col3 = xDim.value('/x[3]','float')
,Col4 = xDim.value('/x[4]','float')
From (Select Cast('<x>' + replace((Select replace(A.Col,'/','§§Split§§') as [*] For XML Path('')),'§§Split§§','</x><x>')+'</x>' as xml) as xDim) as A
) B
Returns
ID Col1 Col2 Col3 Col4
1 1270.8 847.2 254.16 106.9
EDIT - If 2012+, and just to be super-duper safe
Select A.ID
,B.*
From #YourTable A
Cross Apply (
Select Col1 = try_convert(float,xDim.value('/x[1]','varchar(100)'))
,Col2 = try_convert(float,xDim.value('/x[2]','varchar(100)'))
,Col3 = try_convert(float,xDim.value('/x[3]','varchar(100)'))
,Col4 = try_convert(float,xDim.value('/x[4]','varchar(100)'))
From (Select Cast('<x>' + replace((Select replace(A.Col,'/','§§Split§§') as [*] For XML Path('')),'§§Split§§','</x><x>')+'</x>' as xml) as xDim) as A
) B

Answer 3

If you are using SQL Server 2016, you can use String_Split()
;with cte as (
select RowN = row_number() over(order by (SELECT NULL)), * from string_split('1270.8/847.2/254.16/106.9','/')
) select * from cte
pivot (max(value) for RowN in ([1],[2],[3],[4])) p
If you are using less than SQL Server 2016 version then you might require to use custom split functions... Many ways to write custom split function one easier way is to write using xml
CREATE Function dbo.udf_split( #str varchar(max), #delimiter as varchar(5) )
RETURNS #retTable Table
( RowN int,
value varchar(max)
)
AS
BEGIN
DECLARE #xml as xml
SET #xml = cast(('<X>'+replace(#str,#delimiter ,'</X><X>')+'</X>') as xml)
INSERT INTO #retTable
SELECT RowN = Row_Number() over (order by (SELECT NULL)), N.value('.', 'varchar(MAX)') as value FROM #xml.nodes('X') as T(N)
RETURN
END
--Your query
;with cte as (
select * from udf_split('1270.8/847.2/254.16/106.9','/')
) select * from cte
pivot (max(value) for RowN in ([1],[2],[3],[4])) p
But mine is similar to John's solution... Just now only looking at that
If you are using in value in a table then you can use cross apply as below
create table #t (v varchar(50), i int)
insert into #t (v, i) values ('1270.8/847.2/254.16/106.9',1)
,('847.222/254.33/106.44',2)
select * from #t t cross apply string_split(t.v, '/')

Answer 4

create table #t (v varchar(50), i int)
insert into #t (v, i) values ('1270.8/847.2/254.16/106.9',1)
,('847.222/254.33/106.44',2)
--Just to get all the values
select * from #t t cross apply string_split(t.v, '/')
--Inorder to get into same row -pivoting the data
select * from (
select * from #t t cross apply (select RowN=Row_Number() over (Order by (SELECT NULL)), value from string_split(t.v, '/') ) d) src
pivot (max(value) for src.RowN in([1],[2],[3],[4])) p