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Actually, the "required characters" for this spec was for at least a number, a lower-case letter, and an uppercase letter. I had a solution that quite nicely found the number, and if letters were there, would detect that there was an upper-case, and a lowercase. The trouble that I had was when no letters were included, it failed.

Birgitta's solution was exactly what I was looking for, but I did not know how to code it until I saw her example.
I modified that to:

exec sql set :result = case
when RegexP_Instr(:Password, '[0-9]') > 0
and RegexP_Instr(:Password, '[a-z]') > 0
and RegexP_Instr(:Password, '[A-Z]') > 0
then '1' else '0' end;

and that tests out nicely for all three conditions.

Thanks to all for the ideas.


Michael Koester

-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
Birgitta Hauser
Sent: Wednesday, December 09, 2015 12:57 PM
To: 'RPG programming on the IBM i (AS/400 and iSeries)'
Subject: AW: How to detect a letter?

You may also try regular expressions with SQL. REGEXP_INSTR returns the
position of the first occurrence. If the returned position is higher than
*zeros any character a-z/A-Z is included.

Exec SQL Set :isFound = Case When RegexP_Instr(:YourText, '[a-zA-Z]') > 0
Then '1' Else '0' End;


Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok) "What is
worse than training your staff and losing them? Not training them and
keeping them!"

-----Ursprüngliche Nachricht-----
Von: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im Auftrag von
Koester, Michael
Gesendet: Wednesday, 09.12 2015 17:54
An: RPG400-L@xxxxxxxxxxxx
Betreff: How to detect a letter?

I'm guessing that someone has already had to do this:
I need to validate that a string contains a letter (A-Z or a-z) as part of
an edit routine for valid email passwords.

I could brute-force this with for-loops scanning for each letter, but I
suspect there is a more elegant solution. Ideas? Preferred solution would
be RPG and/or SQL supported by v7.1.

(Hoped to find a previous discussion of this in the archives, but my
creativity failed me for getting the right search words.) Many thanks.

Michael Koester
Programmer/Analyst
DataEast - Granite State Communications



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