* Marco Andriolo-Stagno 
> One of my friend, with MySQL v. 3.22.32 and with this commands :
> 
> CREATE TABLE phpgw_chat_channel (con int(11) auto_increment, name
> varchar(10) NOT NULL, title char(50) NOT NULL, UNIQUE(con))
> 
> have this error:
> 
> MySQL complains:
> Column 'con' is used with UNIQUE or INDEX but is not defined as NOT
> NULL
> 
> 
> I have v. 3.23.53-log  and with the same statment I have no error; I
> guess because the new version add 'not null' automagically. 
> 
> Is it right?

Yes.

> Can someone tell me from which version is it true?

>From 3.23.0:

<URL: http://www.mysql.com/doc/en/News-3.23.0.html >

-- 
Roger

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