MS Sql order by numeric parts of string - sql

Question

I need to order my query by numeric parts.
I have a lot of rows looks like:
'ABCD.1234.567'
'ABCD.1234-2345'
'ABCD.1234.1213.1'
So, I want firs order by first numeric part, then by second and then by therd.
Like this:
'ABCD.1234.567'
'ABCD.1234.1213.1'
'ABCD.1234-2345'
How can I do this?
UPD: I have tried to use PATINDEX function in order by, but can figure out how to do that for all numbers.
order by s.product, (case when Patindex('% ,.,-%', s.product)=0 then 0
else Cast(SUBSTRING(s.product, Patindex('%[0-9]%', s.product), len(s.product)) as int) end)

Answer 1

You could use a string split function
DECLARE #SampleData AS TABLE
(
Name varchar(100)
)
INSERT INTO #SampleData
VALUES
('ABCD.1234.567'),
('ABCD.1234-2345'),
('ABCD.1234.1213.1')
Your query would be
SELECT *
FROM #SampleData sd
OUTER APPLY
(
SELECT CAST(t.Value AS int) AS Part1
FROM [dbo].[SplitString](replace(sd.Name,'-', '.'),'.') t
WHERE t.Pos = 2
) p1
OUTER APPLY
(
SELECT CAST(t.Value AS int) AS Part2
FROM [dbo].[SplitString](replace(sd.Name,'-', '.'),'.') t
WHERE t.Pos = 3
) p2
OUTER APPLY
(
SELECT CAST(t.Value AS int) AS Part3
FROM [dbo].[SplitString](replace(sd.Name,'-', '.'),'.') t
WHERE t.Pos = 4
) p3
ORDER BY p1.[Part1], p2.[Part2], p3.Part3
And string split function
CREATE FUNCTION [dbo].[SplitString] (#Text varchar(max),#Delimiter varchar(10))
Returns Table
As
Return (
Select Pos = Row_Number() over (Order By (Select null))
,Value = LTrim(RTrim(B.i.value('(./text())[1]', 'varchar(max)')))
From (Select x = Cast('<x>'+ Replace(#Text,#Delimiter,'</x><x>')+'</x>' as xml).query('.')) as A
Cross Apply x.nodes('x') AS B(i)
);
Result:
Name Part1 Part2 Part3
---------------------------------------
ABCD.1234.567 1234 567 NULL
ABCD.1234.1213.1 1234 1213 1
ABCD.1234-2345 1234 2345 NULL

Answer 2

For 4 groups or less, PARSENAME makes a great string split function
DECLARE #foo TABLE (foo varchar(100));
INSERT #foo
VALUES
('ABCD.1234.567'),
('ABCD.1234-2345'),
('ABCD.1234.1213.1')
SELECT
Y.foo
FROM
(
SELECT
Element1 = REVERSE(PARSENAME(X.ProcessedFoo, 1)),
Element2 = REVERSE(PARSENAME(X.ProcessedFoo, 2)),
Element3 = REVERSE(PARSENAME(X.ProcessedFoo, 3)),
Element4 = REVERSE(PARSENAME(X.ProcessedFoo, 4)),
X.foo
FROM
(
SELECT
foo,
ProcessedFoo = REVERSE(REPLACE(foo, '-', '.'))
FROM #foo
) X
) Y
ORDER BY
Y.Element1,
CAST(Y.Element2 AS int),
CAST(Y.Element3 AS int),
CAST(Y.Element4 AS int);