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  1.  Home
  2. JAVA400-L
  3. June 2013

RE: JDBC connection string

I must have been dumb-lucky through the years that the user ids have been configured for ISO format; I've not used date format or time format in the url. All my stuff is switchable between SQL Server or DB2 for IBMi and I haven't had a problem reading info. I do use the JDBC escape format for writing date and time literals as mentioned in JoeSam's second reference. Maybe it's because I nearly always use timestamp fields instead of date fields.

-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of Jon Paris
Sent: Tuesday, June 18, 2013 5:24 PM
To: Java Programming on and around the IBM i
Subject: Re: JDBC connection string

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=nas125a815068ae879258625
6aaa0054f5fb


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/JD
BCProperties.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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Jon Paris

www.partner400.com
www.SystemiDeveloper.com




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Jon Paris

www.partner400.com
www.SystemiDeveloper.com




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