select ( select max(c.idrow)+1 from provasql c ) , 'This is only a test';
Does changing max(c.idrow)+1 to coalesce(max(c.idrow),0)+1 solve
your problem?
--Pete
On Fri, Nov 04, 2005 at 04:56:26PM +0100, AESYS S.p.A. [Enzo Arlati] wrote:
For a while my application should support both mysql 4 and 5 ( teh same copy
on different sites of course ) so I should keep using a soluting wich should
works well on both revision.
I also have a couple of server with their database configured as master
slave, so I don't trust to use autoincrement.
When I can leave ther revision 4 at all I think to use the autoincrement
using a trigger and mybe something like the oracle sequence .
regards, Enzo
Mysql 5 is much more picky on things you shouldnt have been able to do in
the
first place.. Just change idrow to auto_increment and stop doing max.. Its
not needed. innodb properly handles auto_increment now.
Jeff
-Messaggio originale-
Da: Jeff Smelser [mailto:[EMAIL PROTECTED]
Inviato: venerd? 4 novembre 2005 16.42
A: mysql@lists.mysql.com
Oggetto: Re: MySQL 5.0 : error using max(idrow) on a null value
On Friday 04 November 2005 07:30 am, AESYS S.p.A. [Enzo Arlati] wrote:
Hi, I'm trying to migrate from MySQL 4.1.11 to MySQL 5.0 and I get a
problem with the new release.
I have this table...
provasql
CREATE TABLE `provasql`
`idrow` bigint(20) unsigned NOT NULL default '0',
`descr` varchar(50) default NULL,
PRIMARY KEY (`idrow`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
...this is the SQL command...
insert into provasql ( idrow, descr )
select ( select max(c.idrow)+1 from provasql c ) , 'This is only a test';
...and this is the error:
ERROR 1263 (22004): Column set to default value; NULL supplied to NOT NULL
colum
n 'idrow' at row 1
With MySQL 4.1.11 I'd never get this error message, but it happens with
the
5.0.15 version.
Can anyone help me?
Mysql 5 is much more picky on things you shouldnt have been able to do in
the
first place.. Just change idrow to auto_increment and stop doing max.. Its
not needed. innodb properly handles auto_increment now.
Jeff
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