How to spilt a field in SQL

Question

Hi
How can I spilt this field to return only the codes starting with AB?  The AB code could be in any position in the column.  The length of the numbers are always the same.
GW12345 | QW12345 | AB12345
Ive tried a case statement, but it only works if the AB code is the first code in the column.  It is ignoring the code if it is in 2nd or 3rd position
Thanks

Answer 1

You may check this as well:
declare @ch varchar(100)
set @ch='GW12345 | QW12345 | AB12345'
--Method 1
select LTRIM(fn.data) as data from
(select @ch) t(ch)
cross apply sample_split(t.ch,'|') fn
where LTRIM(fn.data) like 'AB%'
--Method 2
select data
from
(select replace(@ch,' | ','.')) t(ch)
cross apply (select parsename(ch,1) as data UNION select parsename(ch,2) UNION select parsename(ch,3)) fn(Data)
where data like 'AB%'
Sample_Split:
CREATE FUNCTION dbo.sample_Split
@RowData nvarchar(2000),
@SplitOn nvarchar(5)
RETURNS @RtnValue table
Id int identity(1,1),
Data nvarchar(100)
AS
BEGIN
Declare @Cnt int
Set @Cnt = 1
While (Charindex(@SplitOn,@RowData)>0)
Begin
Insert Into @RtnValue (data)
Select
Data = ltrim(rtrim(Substring(@RowData,1,Charindex(@SplitOn,@RowData)-1)))
Set @RowData = Substring(@RowData,Charindex(@SplitOn,@RowData)+1,len(@RowData))
Set @Cnt = @Cnt + 1
End
Insert Into @RtnValue (data)
Select Data = ltrim(rtrim(@RowData))
Return
END
Thanks,
Jay
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