Extract and Separate Numeric - sql-server

Question

I have a table below.
Client Name
-----------------------
Mukherjee_ 2697231 Gehrmann _ 298053524
Butt Glen_740708968 Amanda_259055000
Quirk Michael_ 65941412 and Leanne _817498908
Butt Glen_740708968 Amanda_259055000 Tristan 3939393939
Kryger Aaron _ 606506375
Krebs Paul
Haddrill Clare _ 333900499 McRedmond Patrick _557887778
I need to extract the numbers only and the numbers must be separated.
Numeric
----------------
2697231 298053524
740708968 259055000
65941412 817498908
740708968 259055000 3939393939
606506375
333900499 557887778
I have used the function below, however it concatenates all the numbers together.
ALTER FUNCTION [dbo].[UDF_GetNumeric]
(#strAlphaNumeric VARCHAR(256))
RETURNS VARCHAR(256)
AS
BEGIN
DECLARE #intAlpha INT
SET #intAlpha = PATINDEX('%[^0-9]%', #strAlphaNumeric)
BEGIN
WHILE #intAlpha > 0
BEGIN
SET #strAlphaNumeric = STUFF(#strAlphaNumeric, #intAlpha, 1, '' )
SET #intAlpha = PATINDEX('%[^0-9]%', #strAlphaNumeric )
END
END
RETURN ISNULL(#strAlphaNumeric,0)
END
I'm using SQL Server 2012.

Answer 1

Upon looking further into this problem, I came up with -->
-- partition into non-num and numeric strings, collapse non-num into single space, and copy numeric as is
-- complicating: multiple non-num and multiple numeric strings
-- further, allow for starting with EITHER non-num or numeric
-- further, can have no numeric at all, or can have no non-num at all
I put data into table dbo.separatenumber
And created UDF--> Revised Jan 15th--del If/Then/Set #next, add Set #LeftMost
/****** Object: UserDefinedFunction [dbo].[fnSeparateNonNumericCharacters] Script Date: 01/14/2020 21:41:42 ******/
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[fnSeparateNonNumericCharacters]') AND type in (N'FN', N'IF', N'TF', N'FS', N'FT'))
DROP FUNCTION [dbo].[fnSeparateNonNumericCharacters]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE Function [dbo].[fnSeparateNonNumericCharacters](#strText VARCHAR(1000)) RETURNS VARCHAR(1000) AS
BEGIN
Declare #outText as varchar(1000), #LeftMost as char(4), #ndx as int
Set #outText = ''
IF PATINDEX('[0-9]', SUBSTRING(#strText,1,1)) = 1 -- is the 1st char numeric?
Set #LeftMost = 'Nums'
ELSE
Set #LeftMost = 'Text'
;
WHILE LEN(#strText) > 0
BEGIN
IF #LeftMost = 'Text'
BEGIN
Set #ndx = PATINDEX('%[0-9]%', #strText) -- where is the next Numeric
If #ndx = 0 Break -- bail when no more
Set #strText = SUBSTRING(#strText, #ndx, LEN(#strText) - #ndx + 1) -- bypass Text
Set #LeftMost = 'Nums'
END
ELSE -- #LeftMost = 'Nums'
BEGIN
Set #ndx = PATINDEX('%[^0-9]%', #strText) -- where is next Text
If #ndx = 0 Set #ndx = LEN(#strText) + 1 -- use EOL plus one when no more
Set #outText += SUBSTRING(#strText, 1, #ndx - 1) + ' ' -- Grab Numbers plus a space
If #ndx = LEN(#strText) + 1 Break -- bail when no more
Set #strText = SUBSTRING(#strText, #ndx, LEN(#strText) - #ndx + 1 ) -- move past this Num
Set #LeftMost = 'Text'
END
;
END
RETURN #outText -- here it is
END
GO
select
*
, dbo.fnSeparateNonNumericCharacters(clientname) as Numbers
from dbo.separatenumber
Sample output
ClientID ClientName Numbers
11 Mukherjee_ 2697231 Gehrmann _ 298053524 2697231 298053524
22 Butt Glen_740708968 Amanda_259055000 740708968 259055000
33 Quirk Michael_ 65941412 and Leanne _817498908 65941412 817498908
44 Butt Glen_740708968 Amanda_259055000 Tristan 3939393939 740708968 259055000 3939393939
55 Kryger Aaron _ 606506375 606506375
66 Krebs Paul
77 Haddrill Clare _ 333900499 McRedmond Patrick _557887778 333900499 557887778