REGEXP_LIKE statement help

Hello Experts

I have a little problem to solve the problem with REGEXP_LIKE as shown below.

All records are giving me the result desired, except the last in alph and digital and between the two spaces.

Can I please have the solution please. I tried with INSTR, but it does not work too.

Thanks in advance

Rajesh


WITH T AS
(SELECT '$000 444 888' STUDENT_ID FROM DUAL UNION ALL)
SELECT ' ^ ^ ^ ' STUDENT_ID FROM DUAL UNION ALL
SELECT "ABCDEFGH &' DOUBLE UNION ALL STUDENT_ID"
SELECT '! @ ' STUDENT_ID FROM DUAL UNION ALL
SELECT ' 123456 * 891' STUDENT_ID FROM DUAL UNION ALL
SELECT "AAA 77BBBBB" DOUBLE STUDENT_ID
)
SELECT student_id FROM T
IF not REGEXP_LIKE (trim (STUDENT_ID), ' ^ [[: alnum:]] * $')

Rb2000rb65 wrote:
Any help on this please.

You won't get much help unless you clearly explain the issue. Sven W. gave you the solution:

IF not REGEXP_LIKE (STUDENT_ID, ' ^ [[: alnum:]] * $"")

SQL> WITH T AS
  2  (SELECT '000 444$888' STUDENT_ID FROM DUAL UNION ALL
  3  SELECT '^^^^^^^^^^ ' STUDENT_ID FROM DUAL UNION ALL
  4  SELECT 'ABCDEFGH&' STUDENT_ID FROM DUAL UNION ALL
  5  SELECT '!@@@@@@@ ' STUDENT_ID FROM DUAL UNION ALL
  6  SELECT '123456*891 ' STUDENT_ID FROM DUAL UNION ALL
  7  SELECT 'AAA 77BBBBB ' STUDENT_ID FROM DUAL
  8  )
  9  SELECT student_id FROM T
 10  WHERE not REGEXP_LIKE(trim(STUDENT_ID), '^[[:alnum:] ]*$')
 11  /

STUDENT_ID
------------
000 444$888
^^^^^^^^^^
ABCDEFGH&
!@@@@@@@
123456*891

SQL> 

So if it's still not good for you, you need to explain why.

SY.

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