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Re: upper case constraint?

From: Niall Litchfield <n-litchfield_at_audit-commission.gov.uk>
Date: Thu, 12 Feb 2004 15:56:50 -0000
Message-ID: <402ba243$0$10339$ed9e5944@reading.news.pipex.net>


the check constraint will work, but throw an error back to the user. an alternative uses a trigger

SQL*Plus: Release 9.2.0.4.0 - Production on Thu Feb 12 15:52:34 2004

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Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production With the Partitioning, OLAP and Oracle Data Mining options JServer Release 9.2.0.4.0 - Production

SQL> CREATE TABLE bla
  2 (
  3 firstname varchar2(10) CHECK(UPPER(firstname) = firstname)   4* );

Table created.

SQL> insert into bla values ('niall');
insert into bla values ('niall')
*
ERROR at line 1:
ORA-02290: check constraint (NIALL.SYS_C003332) violated

SQL> create or replace trigger trg_bla
  2 before insert or update on bla
  3 for each row
  4 begin
  5 :new.firstname := UPPER(:new.firstname);   6 end;
  7 /

Trigger created.

SQL> insert into bla values ('niall');

1 row created.

SQL> select * from bla
  2 ;

FIRSTNAME



NIALL which you prefer depends on whether you wish to educate users or correct them...
-- 
Niall Litchfield
Oracle DBA
Audit Commission UK
"Thomas Kellerer" <spam_eater_at_gmx.net> wrote in message
news:c0g67j$16fkdi$1_at_ID-13919.news.uni-berlin.de...

>
>
> On 12.02.2004 16:18 D. Alvarado wrote:
>
> > Hello, I'm working with Oracle 8.1.7 for Solaris. Is there any
> > constraint I can put on a VARCHAR2 column to force its characters
> > always be stored as upper case? Thanks - Dave
>
> what about
>
> CREATE TABLE bla
> (
> firstname varchar2(10) CHECK(UPPER(firstname) = firstname)
> );
>
> Haven't tried it though
>
> Thomas
Received on Thu Feb 12 2004 - 09:56:50 CST

Original text of this message

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