RE: Converting a numeric date value to a DATE in SQL

Jeff,

Using STRSQL over a file with a Decimal (8,0) field:

SELECT DATE( (substr(digits(datenump),01,04)) || '-' ||
(substr(digits(datenump),05,02)) || '-' ||
(substr(digits(datenump),07,02)) )
FROM tlib/sqldatep

Returns:
....+....1
DATE
2014-09-09

Also works with type numeric.
******** End of data ********


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Young
Sent: Tuesday, September 09, 2014 10:14 AM
To: Midrange Systems Technical Discussion
Subject: Re: Converting a numeric date value to a DATE in SQL

Alan,
Unfortunately, iDate is not an option for this customer (need to get permission to install *any* 3rd party software -including- utilities) I have tried to use SELECT DATE(field) from my file (where field is 20140905), but SQL did not like that and it returned ++++++++.
Is there an easy way to do this?



Jeff Young
Sr. Programmer Analyst

On Tue, Sep 9, 2014 at 11:46 AM, John Yeung <gallium.arsenide@xxxxxxxxx>
wrote:

On Tue, Sep 9, 2014 at 10:38 AM, Jeff Young <jyoung0950@xxxxxxxxx> wrote:

Using SQL, how do I convert a numeric value of a database field in
ISO

date

format (ccyymmdd) to a DATE data type for comparison?
I need to select all records with a date that is equal to a value
input

by

the user.

I think we all agree that the "right" way to do dates is with date
fields. However, if all you need is to check for equality, probably
the fastest thing to do is to convert your input to numeric ISO and do
a direct comparison with that.

And in your case, even if you had to check for earlier-than,
later-than, or between, you could still use the numeric ISO dates
as-is (this would not be the case for MDY, USA, or EUR numeric-field
dates).

That said, it is probably still worth having iDate. :)

John Y.
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