Validation on Domain Name

Question

Hi,
I need to do validation on domain name, There is a filed where user enters his domain address like WWW.DOMAIN.COM, If user dont enter proper domain name as mentioned it must return a message.
eg: it must only allow domain name only starting with name www. and end with some .com or .in or .net any thing which ends with . (period)
Need a suggestion how to validate this in plsql
Thanks
Sudhir

Answer 1

Check this if works for U
With t
as
SELECT 'WWW.DOMAIN.IN' txt from dual UNION ALL
SELECT 'WWW.DOMAIN..IN' txt from dual UNION ALL
SELECT 'WW.TEST.IN' txt from dual  UNION ALL
SELECT 'WWW.TEST.COM' txt from dual  UNION ALL
SELECT 'WWW.TEST.IN' txt from dual  
SELECT txt,
   CASE
      WHEN  REGEXP_LIKE ( txt
            , '^(WWW.)[A-Z]+(.COM|.IN|.NET)$'
      THEN  'Okay'
      ELSE  'Not Okay'
  END      AS is_correct_web_address
FROM t
TXT            IS_CORRECT_WEB_ADDRESS
WWW.DOMAIN.IN  Okay
WWW.DOMAIN..IN Not Okay
WW.TEST.IN     Not Okay
WWW.TEST.COM   Okay
WWW.TEST.IN    Okay
  For case in-sensitive
With t
as
SELECT 'WWW.DOMAIN.in' txt from dual UNION ALL
SELECT 'WWW.DOMAIN..IN' txt from dual UNION ALL
SELECT 'WW.TEST.IN' txt from dual  UNION ALL
SELECT 'WWW.TEST.IN' txt from dual  
SELECT txt,
   CASE
      WHEN  REGEXP_LIKE ( txt
            , '^(WWW.)[A-Z]+(.COM|.IN|.NET)$','i'
      THEN  'Okay'
      ELSE  'Not Okay'
  END      AS is_correct_web_address
FROM t 
TXT            IS_CORRECT_WEB_ADDRESS
WWW.DOMAIN.in  Okay
WWW.DOMAIN..IN Not Okay
WW.TEST.IN     Not Okay
WWW.TEST.IN    Okay
   Sudhir_Meru wrote:     
Thanks Kiran and loknath this worked for me. Thank you very much for you reply
>
Most welcome...That what forum is intended :-)
Edited by: Lokanath Giri on १९ अप्रैल, २०१२ ६:४८ अपराह्न