RE: SQLSTATE 23513, get constraint name?

Just a note for when exploring a system to find constraints - the system
tables can be very helpful.

The SYSCST view contains one row for each constraint in the SQL schema.

The SYSCSTCOL view records the columns on which constraints are defined.
There is one row for every column in a unique, primary key, and check
constraint and the referencing columns of a referential constraint.

The SYSCSTDEP view records the tables on which constraints are defined.

The SYSKEYCST view contains one or more rows for each UNIQUE KEY, PRIMARY
KEY, or FOREIGN KEY in the SQL schema. There is one row for each column in
every unique or primary key constraint and the referencing columns of a
referential constraint.

The SYSREFCST view contains one row for each foreign key in the SQL schema

Example: SELECT * FROM sysrefcst where ...

Similar tables and views for triggers...
All the catalog tables, views and details
https://www-01.ibm.com/support/knowledgecenter/ssw_ibm_i_71/db2/rbafzcatalog
tbls.htm


Jim Franz

-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Charles
Wilt
Sent: Monday, January 04, 2016 4:33 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: Re: SQLSTATE 23513, get constraint name?

Something to consider..

Instead of just CHK_TESTDIAG as a name

1) You can use long names. CHECK_TEST_DIAGNOSTIC is perfectly valid and
makes more sense
2) Even better, CHECK_TEST_DIAGNOSTIC_ERR0100 where you postfix a message ID
to the constraint

Now you could extract the MSGID, and then retrieve more details about the
problem..

Stolen from here:
http://www.itjungle.com/fhg/fhg021710-story01.html

Charles


On Mon, Jan 4, 2016 at 2:50 PM, Justin Taylor <JUSTIN@xxxxxxxxxxxxx> wrote:

Somehow I missed your prior post. Your sample is perfect!

Thanks




-----Original Message-----
From: Luis Rodriguez [mailto:luisro58@xxxxxxxxx]
Sent: Wednesday, December 30, 2015 10:46 AM
To: RPG programming on the IBM i (AS/400 and iSeries) <
rpg400-l@xxxxxxxxxxxx>
Subject: Re: SQLSTATE 23513, get constraint name?

Justin,

I don't know if you got my prior post about using GET_DIAGNOSTICS...

Suppose you create the following table:




*Create table testdiag ( f1 char not null with default '', constraint
chk_testdiag check (f1 <> 'x') ) *
You can use the GET DIAGNOSTICS sentence into a program like this:










* HDebug(*yes) DC_Name S 128 Varying
/free exec sql insert into Testdiag (F1) values('X') ;
exec sql get diagnostics condition 1 :C_Name = Constraint_Name
; dump ;
return;
*

In this case, C_Name would return 'CHK_TESTDIAG'

Is this what you are asking about?

Regards,


Luis Rodriguez

--


On Wed, Dec 30, 2015 at 11:28 AM, Justin Taylor <JUSTIN@xxxxxxxxxxxxx>
wrote:

The corresponding SQLCODE message (SQL0545) gives the same text as
what GET DIAGNOSTICS EXCEPTION gave me. The message text in the
joblog is also the same. The Cause listed in the joglog does
include the constraint name. Any painless way to get that

programmatically?

-----Original Message-----
From: Vernon Hamberg [mailto:vhamberg@xxxxxxxxxxxxxxx]
Sent: Wednesday, December 30, 2015 8:08 AM
To: RPG programming on the IBM i (AS/400 and iSeries) <
rpg400-l@xxxxxxxxxxxx>
Subject: Re: SQLSTATE 23513, get constraint name?

Take a look at the job log - there are often more messages that were
logged before the one you are seeing. And getting an SQLSTATE, there
will definitely be some kind of messages out there

Also check SQLCODE for a value - that value is often made part of a
message ID - for example, if SQLCODE is 367, say, the message ID
will be SQL0367.

But that message, if any, will be part of the job log.

This is a WAG, but based on seeing lots of messages logged in other
error conditions for SQL.

HTH
Vern

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