I have not yet tried Alan Campin's iDate utility having documentation which states it can handle *JDEJUL - CYYDDD Julian. Century Number (0 or 1) for J.D. Edward folks.

Reminds me of the *JDEJUL conversion offered by Howard Arner at http://www.sqlthing.com/Resources/JDDCONV.html
Howard lists the steps to create a user defined function that encapsulates this logic to display *JDE dates in mm/dd/yy format:
select DATE(DIGITS(DECIMAL(ABUPMJ +1900000,7,0))), ABUPMJ from F0101

That web page states: the code for the UDF.

CREATE FUNCTION MCEIS.JDDCONV
(JDEDATE DECIMAL(6,0))
RETURNS DATE
LANGUAGE SQL
SET OPTION DATFMT=*ISO
BEGIN
DECLARE F_OUTPUT DATE ;
DECLARE F_TEST INTEGER ;
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET F_TEST = 1 ;
SET F_TEST = 0;
SET F_OUTPUT = DATE(DIGITS(DECIMAL(JDEDATE+1900000,7,0)));
IF F_TEST = 0 THEN RETURN F_OUTPUT ;
ELSE RETURN NULL;
END IF;
END


-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Alan Campin
Sent: Wednesday, April 17, 2019 10:15 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: [External] Re: [EXT] Re: How can I detect an invalid date string in SQL?

Probably beating a dead horse but my iDate will return a null if the date is invalid.

Select IfNull(iDate(20190231,'*ISO'),20190228) from sysibm/sysdummy1

www.think400.dk/downloads.htm


On Wed, Apr 17, 2019 at 8:08 AM Mark Murphy <jmarkmurphy@xxxxxxxxx> wrote:

Dave, works the same way! Eric, my data has invalid dates,
Timestamp_format chokes on that. I have written my own UDF to validate
the date string, then I can do this

case when IsValidDate(storagedt) = '1' then dec(date(storagedt)) else
0 end

On Wed, Apr 17, 2019 at 10:31 AM DeLong, Eric
<EDeLong@xxxxxxxxxxxxxxx>
wrote:

Have you tried working with TIMESTAMP_FORMAT or TO_DATE?



https://www.ibm.com/support/knowledgecenter/en/SS6NHC/com.ibm.swg.im.d
ashdb.sql.ref.doc/doc/r0007107.html

Sent from my iPhone

On Apr 17, 2019, at 9:14 AM, "dlclark@xxxxxxxxxxxxxxxx<mailto:
dlclark@xxxxxxxxxxxxxxxx>" <dlclark@xxxxxxxxxxxxxxxx<mailto:
dlclark@xxxxxxxxxxxxxxxx>> wrote:

CAUTION: EXTERNAL EMAIL

********************************************************************
** "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxxxxxxxx<mailto:
midrange-l-bounces@xxxxxxxxxxxxxxxxxx>> wrote on 04/17/2019
09:36:22 AM:
In SQL, how can I detect a NULL returned by a function like DATE()
or DEC()?

This is my statement:

select storagedt, ifnull(dec(date(storagedt)), 0) as "as Decimal"
from mytable


What if you reversed that to the following?

dec(ifnull(date(storagedt), 0))


Sincerely,

Dave Clark
--
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direct: (937) 531-6378
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