Validate the value of the item only with the alphabets and hyphen
Hi Experts,
I have a text field element, I want to create a posting as
It must contain a hyphen as a separator
example: -.
valid entry
A B
AA-BB-CC
Invalid entry
-A, A-,AA-AB-,-BC-CC-etc.
I tried certain regular expressions but found no solution,
Please suggest me a solution
Kind regards
Jitendra
declare v_check_string varchar2(4000); v_error_message varchar2(32767); begin v_check_string := trim(:p1_text_field); if ( v_check_string is null or ( translate( v_check_string, '#ABCDEFGHIJKLMNOPQRSTUVWXYZ-', '#' ) is null -- only alfabetic and - and substr( v_check_string, 1, 1 ) != '-' -- first character not - and substr( v_check_string, -1 ) != '-' -- last character not - and instr( v_check_string, '--' ) = 0 -- not two ore more repeating - ) ) then null; -- valid string else v_error_message := 'String: "' || v_check_string || '" is not valid'; end if; return v_error_message; end;
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