SQL replace/ remove multiple date and time stamp from any part of a string - sql

Question

I have a nvarchar field that contains multiple date & time stamps and various text. The date and time can be at any position in the field.
I want to select only the text from the field. I have tried with REPLACE and PATINDEX to no avail.
Please can anyone share how i would write my select on this example notes field which contains this string:
ADMIN1 21/04/2017 02:01:01 This student is here and trying to gain a masters.
ITSYS2 09/05/2017 03:51:04 60 APL Credits on xout

Answer 1

The following will exclude dates and times from the note_detail. This is an in-line approach, but just about any split/parse function will do the trick as well.
Example
Declare #YourTable table(studend_id int,note_detail varchar(max))
Insert Into #YourTable values
(1,'CHIDLOL 21/04/2017 02:01:01 '+CHAR(13)+CHAR(10)+'This studend is here and trying to gain a masters. THOMASXC 09/05/2014 03:54:04 60 APL Credon on xout')
Select A.studend_id
,new_note_detail = B.S
From #YourTable A
Cross Apply (
Select S = Stuff((Select ' ' +RetVal
From (
Select RetSeq = Row_Number() over (Order By (Select null))
,RetVal = LTrim(RTrim(B.i.value('(./text())[1]', 'varchar(max)')))
From (Select x = Cast('<x>' + replace((Select replace(replace(replace(A.note_detail,char(13),' '),char(10),' '),' ','§§Split§§') as [*] For XML Path('')),'§§Split§§','</x><x>')+'</x>' as xml).query('.')) as A
Cross Apply x.nodes('x') AS B(i)
) B1
Where RetVal not like '%[0-9]/[0-9][0-9]/[0-9]%'
and RetVal not like '%[0-9]:[0-9][0-9]:[0-9]%'
Order by RetSeq
For XML Path ('')),1,1,'')
) B
Returns
studend_id new_note_detail
1 CHIDLOL This studend is here and trying to gain a masters. THOMASXC 60 APL Credon on xout
Edit - Option 2 with a Parse Function
Select A.studend_id
,new_note_detail = B.S
From #YourTable A
Cross Apply (
Select S = Stuff((Select ' ' +RetVal
From [dbo].[udf-Str-Parse](replace(replace(A.note_detail,char(13),' '),char(10),' '),' ') B1
Where RetVal not like '%[0-9]/[0-9][0-9]/[0-9]%'
and RetVal not like '%[0-9]:[0-9][0-9]:[0-9]%'
Order by RetSeq
For XML Path ('')),1,1,'')
) B
The UDF if Interested
CREATE FUNCTION [dbo].[udf-Str-Parse] (#String varchar(max),#Delimiter varchar(10))
Returns Table
As
Return (
Select RetSeq = Row_Number() over (Order By (Select null))
,RetVal = LTrim(RTrim(B.i.value('(./text())[1]', 'varchar(max)')))
From (Select x = Cast('<x>' + replace((Select replace(#String,#Delimiter,'§§Split§§') as [*] For XML Path('')),'§§Split§§','</x><x>')+'</x>' as xml).query('.')) as A
Cross Apply x.nodes('x') AS B(i)
);
--Thanks Shnugo for making this XML safe
--Select * from [dbo].[udf-Str-Parse]('Dog,Cat,House,Car',',')
--Select * from [dbo].[udf-Str-Parse]('John Cappelletti was here',' ')
--Select * from [dbo].[udf-Str-Parse]('this,is,<test>,for,< & >',',')