Re: SQL function equivalent to TestN?

On Dec 22, 2016, at 10:59 AM, Luis Rodriguez <luisro58@xxxxxxxxx> wrote:

Michael,

AFAIK, the answer is no, but you could create a function that emulates
TestN...

Regards,
Luis

Sent from my Moto G phone. Please excuse my brevity.

On Dec 22, 2016 11:47, "Koester, Michael" <mkoester@xxxxxxxxxxxxx> wrote:

Is there anything in SQL that can test a string for a valid numeric?
I am looking to extract the minimum value from a character column in
selected rows, but I only want to consider those where the column has a
numeric value.
Simplified, I'm looking for something like:

Exec sql
select min(columnOfwhoKnowsWhat)
from table1
where [columnOfwhoKnowsWhat (a 10-character field) only contains some
whole number between 1 and 99,999 (possibly with a comma) ];

The column I need to test is a number of feet from a location, but being a
"miscellaneous" field, may instead have all manner of other data instead,
including values with more than one decimal point, e.g. ".057 .034 .032"
(yeah, there's even an embedded space).

I know I can declare a cursor, fetch each row and test with RPG, but if
SQL can do it, that would be preferable.

Had to ask...
Thanks.

Michael Koester

--
This is the RPG programming on the IBM i (AS/400 and iSeries) (RPG400-L)
mailing list
To post a message email: RPG400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/rpg400-l.

Please contact support@xxxxxxxxxxxx for any subscription related
questions.

Help support midrange.com by shopping at amazon.com with our affiliate
link: http://amzn.to/2dEadiD

--
This is the RPG programming on the IBM i (AS/400 and iSeries) (RPG400-L) mailing list
To post a message email: RPG400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/rpg400-l.

Please contact support@xxxxxxxxxxxx for any subscription related questions.

Help support midrange.com by shopping at amazon.com with our affiliate link: http://amzn.to/2dEadiD