How to Read the one Source Column data and Display the Results

Question

Hi All,
     I have one PR_ProjectType Column in my Mastertable,Based on that Column we need to reed the column data and Display the Results
Ex:
Pr_ProjectType
AD,AM
AD
AM
AD,AM,TS,CS.OT,TS
AD,AM          
like that data will come now we need 1. Ad,AM then same we need 2. AD also same we need 3. AM also we need
4.AD,AM,TS,CS.OT,TS in this string we need AD,AM  only.
this logic we need we have thousand of data in the table.Please help this is urgent issue
vasu

Answer 1

Hi Vasu,
Based on your description, you want to eliminate the substrings (eliminated by comma) that are not AD or AM in each value of the column. Personally, I don’t think this can be done by just using an expression in the Derived Column. To achieve your goal, here
are two approaches for your reference:
Method 1: On the query level. Replace the target substrings with different integer characters, and create a function to eliminate non-numeric characters, then replace the integer characters with the corresponding substrings. The statements
for the custom function is as follows:
CREATE 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
GO
The SQL commands used in the OLE DB Source is like:
SELECT
ID, REPLACE(REPLACE(REPLACE(REPLACE(dbo.udf_GetNumeric(REPLACE(REPLACE(REPLACE(REPLACE([ProjectType],'AD,',1),'AM,',2),'AD',3),'AM',4)),4,'AM'),3,'AD'),2,'AM,'),1,'AD,')
FROM MyTable
Method 2: Using a Script Component. Add a Derived Column Transform to replace the target substrings as method 1, use Regex in script to remove all non-numeric characters from the string, add another Derived Column to replace the integer
characters to the corresponding substring. The script is as follows:
using System.Text.RegularExpressions;
Row.OutProjectType= Regex.Replace(Row.ProjectType, "[^.0-9]", "");
References:
http://blog.sqlauthority.com/2008/10/14/sql-server-get-numeric-value-from-alpha-numeric-string-udf-for-get-numeric-numbers-only/ 
http://labs.kaliko.com/2009/09/c-remove-all-non-numeric-characters.html 
Regards,
Mike Yin
TechNet Community Support