write a procedure to check if the input string contain character than it show error

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i have to validate the input string

my input string is in varchar2 datatype and if the user inputs :

09090a779

than it should show error message :
"character not allowed"

Posted 21-Jun-14 0:03am

syedwajid

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OriginalGriff 21-Jun-14 6:53am

And?
What have you tried?
Where are you stuck?

[no name] 21-Jun-14 7:16am

Why? The user input string that you show here is perfectly valid for a varchar2.

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-06-21T19:26:00

Solution 1

No, it should not show this message. It just makes no sense and would be a huge abuse. If you need to enter only digits, you probably need one of numeric types.

—SA

Posted 21-Jun-14 19:26pm

Sergey Alexandrovich Kryukov