Validating text field based on the combination of alphabets and special characters

Question

Hi Everyone,
I am Using Oracle Apex 4.2 Version . I want to do validation for a textbox where it should accept all alphabets,numbers and special characters (abc12#$ , zbc, 123, nd12, 23_6!, @%77).
But it should NOT accept all special characters only.(@#$#!)
Pelase do help if any knows this.
Thanks in advance,
Nikhil.

Answer 1

Hi Nikhil,
Here is one way that could work.
CREATE TABLE t (x VARCHAR2 (30));
INSERT ALL
INTO t
VALUES ('XYZ123')
INTO t
VALUES ('XYZ 123')
INTO t
VALUES ('xyz 123')
INTO t
VALUES ('X1Y2Z3')
INTO t
VALUES ('123123')
INTO t
VALUES ('abc12#$')
INTO t
VALUES ('@%77')
INTO t
VALUES ('!@#$')
INTO t
VALUES ('~%^&*()_+')
INTO t
VALUES ('23_6!')
INTO t
VALUES ('zbc')
INTO t
VALUES ('123*456')
SELECT * FROM DUAL;
SELECT x
FROM   t
WHERE  ( Regexp_like (x, '[[:alpha:]]') -- include alpha characters
          OR Regexp_like (x, '[[:digit:]]') -- include numbers
          OR Regexp_like (x, '[[:punct:]]') ) -- include special character
       AND ( Regexp_like (x, '^[^%]*$');
             AND Regexp_like (x, '^[^*]*$') ) -- exlude special characters % and *
Jeff