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From Dave Birdsall <dave.birds...@esgyn.com>
Subject RE: [DISCUSS] Change the default setting of ALLOW_NULLABLE_UNIQUE_KEY_CONSTRAINT to ON
Date Tue, 02 Feb 2016 22:01:34 GMT
ANSI in general does not concern itself with physical issues. So no
partitioning, no indexing, and so on in ANSI.


-----Original Message-----
From: Eric Owhadi [mailto:eric.owhadi@esgyn.com]
Sent: Tuesday, February 2, 2016 1:59 PM
To: dev@trafodion.incubator.apache.org
Subject: RE: [DISCUSS] Change the default setting of
ALLOW_NULLABLE_UNIQUE_KEY_CONSTRAINT to ON

Great, so my 2 cts is that we should not worry about ANSI on the default not
supporting NULL, since ANSI did not account for partitioning...
Eric

-----Original Message-----
From: Roberta Marton [mailto:roberta.marton@esgyn.com]
Sent: Tuesday, February 2, 2016 3:55 PM
To: dev@trafodion.incubator.apache.org
Subject: RE: [DISCUSS] Change the default setting of
ALLOW_NULLABLE_UNIQUE_KEY_CONSTRAINT to ON

Store by is not ANSI standard.

   Roberta

-----Original Message-----
From: Eric Owhadi [mailto:eric.owhadi@esgyn.com]
Sent: Tuesday, February 2, 2016 1:53 PM
To: dev@trafodion.incubator.apache.org
Subject: RE: [DISCUSS] Change the default setting of
ALLOW_NULLABLE_UNIQUE_KEY_CONSTRAINT to ON

Do you happen to know if STORE BY is part of the ANSI standard, and if ANSI
mandate that anything in STORE BY must be part of the PK?
Eric

-----Original Message-----
From: Dave Birdsall [mailto:dave.birdsall@esgyn.com]
Sent: Tuesday, February 2, 2016 3:45 PM
To: dev@trafodion.incubator.apache.org
Subject: RE: [DISCUSS] Change the default setting of
ALLOW_NULLABLE_UNIQUE_KEY_CONSTRAINT to ON

Our default behavior would not be ANSI standard if this is changed. I don’t
know if that is a compelling reason not to do this though.

Dave

-----Original Message-----
From: Suresh Subbiah [mailto:suresh.subbiah60@gmail.com]
Sent: Tuesday, February 2, 2016 1:37 PM
To: dev@trafodion.incubator.apache.org
Subject: [DISCUSS] Change the default setting of
ALLOW_NULLABLE_UNIQUE_KEY_CONSTRAINT to ON

Hi,

Do you foresee potential problems if  we change the default setting for
ALLOW_NULLABLE_UNIQUE_KEY_CONSTRAINT to ON. ?
It does seem that users are asking for using and setting this CQD in their
individual applications.
Other than JIRA 1801, there are no known issues when this attribute is set
to ON.
Having the default set to ON could make Trafodion easier to use.

I can file a JIRA if there is agreement or if we think the discussion should
be moved to a JIRA.

Thank you
Suresh

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