Do it this way:
Create Table copy ( sessionid int not null auto_increment,
username varchar(20 not null,
start int not null,
stop int not null,
ipaddress varchar(15),
Primary Key (sessionid),
Index altkey (username, start, stop)
);
Insert Into copy
Select NULL, username, start, stop, ipaddress
>From youroriginaltablename;
..chris
----- Original Message -----
Jaime Teng wrote:
> Hi,
>
> I have a mysql table:
> +-----------+------------------+------+-----+
> | Field | Type | Null | Key |
> +-----------+------------------+------+-----+
> | sessionid | int(10) unsigned | | PRI |
> | username | char(20) | | MUL |
> | start | int(10) unsigned | | MUL |
> | stop | int(10) unsigned | | MUL |
> | ipaddress | char(15) | YES | |
> +-----------+------------------+------+-----+
>
> sessionid is a unique key.
>
> Is there a way to change the values of sessionid such that
> the values will be numbered from 1 and increments by 1?
>
> ie, if the numbers were "1,20,22,25,40,45,47....."
> the new data will be "1,2,3,4,5,6,7,8,9....." ?
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