Thanks Joe Sam,

As you say that does explain it. The funny thing is the more definitive of the two (the second reference) specifically mentions all of the areas where it comes into play - and then references the JDBC properties documentation which is clearly wrong!

If anyone on the JT400 project is listening maybe they could initiate some documentation changes so others don't waste time on this in the future.

Thanks again. Nice to know there is some documentation to back up my own discoveries. Makes me feel it is real and not just me!


On 2013-06-18, at 6:16 PM, "Joe Sam Shirah" <joe_sam@xxxxxxxxxxxxx> wrote:


Hi Jon,

You've hit upon an oldie, but not so goodie where the toolbox differs from
the standard. I have a standard way of going from and to java.sql.Date
strings based on the spec, which saves a *lot* of coding that most
programmers ignore or are ignorant of, to ensure proper values. Because of
the items below, it doesn't work on the AS/400. Don't know why they think
they know better than the rest of the world, but it's been that way for a
long time.

See:

http://www-03.ibm.com/systems/i/software/toolbox/faqjdbc.html#faqB5

http://www-01.ibm.com/support/docview.wss?uid=nas125a815068ae8792586256aaa0054f5fb


Joe Sam

Joe Sam Shirah - www.conceptgo.com (904) 302-6870
conceptGO - Consulting/Development/Outsourcing
Java Filter Forum: www.ibm.com/developerworks/java
Just the JDBC FAQs: www.jguru.com/faq/JDBC
Going International? www.jguru.com/faq/I18N
Que Java400? www.jguru.com/faq/Java400

-----Original Message-----
From: Jon Paris
Sent: Tuesday, June 18, 2013 5:37 PM
To: Java Programming on and around the IBM i
Subject: Re: JDBC connection string

That was my first thought Dan - but not so.

If I set the format to ISO in the connection string (and make zero other
changes) then the format of the returned result changes to ISO. Similarly if
I select *MDY as the format on the connection in Run SQL scripts in Nav then
I get the same results as the default for Data Studio.


On 2013-06-18, at 4:27 PM, Dan Kimmel <dkimmel@xxxxxxxxxxxxxxx> wrote:

Jon,

I think it's probably Data Studio trying to format your dates in the
display using whatever the locale in your environment. The JDBC
specification is very specific (duh!) in the format a date or timestamp
field is presented to the java layer. The driver is bound to make the same
presentation whether it is JT400 or Oracle or ????. It puts the date into
a java.sql.Date object. Then whatever presentation layer Data Studio is
using converts the java.sql.Date object into the format it thinks you want
to see based on your locale object.

DK

-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx
[mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of Jon Paris
Sent: Tuesday, June 18, 2013 2:24 PM
To: Java400
Subject: JDBC connection string

I'm not sure if this is a doc error or just me but ...

When I use the JT400/JDBC driver in Data Studio, unless I specify the date
format on the connection string all displays of dates from a SQL statement
are shown in MDY. If I specify ISO I get the results I want. OK but the
docs
(http://javadoc.midrange.com/jtopen/com/ibm/as400/access/doc-files/JDBCProperties.html#format)
say that the date format is only used for date literals - so why does it
affect my non-literal results? Is the doc just wrong? The same issue
seems to exist on IBM's ODBC driver which has a similar description.


Jon Paris

www.partner400.com
www.SystemiDeveloper.com




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www.SystemiDeveloper.com




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Jon Paris

www.partner400.com
www.SystemiDeveloper.com





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