Victoria,
So I looked deeper in my PHP code (I wrote it in February 2002) and saw
I use a REPLACE statement:
class persistent
{
// put method to save properties into the DB
function put($thePrefix)
{
// job not done yet
$returnValue = FALSE;
// build table name and start the SQL REPLACE
statement
$sqlQuery = "REPLACE INTO
".$thePrefix.get_class($this)." SET ";
// build the SQL REPLACE query
foreach(get_object_vars($this) as
$property=>$value)
{
$sqlQuery .= $property." ='".$value."',
";
}
// remove the ", " at the end of the string
$sqlQuery = substr($sqlQuery, 0,
strlen($sqlQuery)-2);
// connect to the DB, put the object and close
the DB
if( $dbLink = mysql_connect(DBHOST, DBUSER,
DBPASSWD) )
{
if( mysql_select_db(DBNAME, $dbLink) )
{
if( mysql_query($sqlQuery,
$dbLink) ) $returnValue = TRUE; // job done
}
}
mysql_close($dbLink);
return($returnValue); // boolean
}
Etc....
This is PHP object code to make my member profiles (PHP objects)
persistent in the DB. I use REPLACE so the member->put() method can be
used to create or store change on member profiles.
Therefore I looked at MySQL Manual:
http://www.mysql.com/doc/en/REPLACE.html#IDX1431
<< REPLACE works exactly like INSERT, except that if an old record in
the table has the same value as a new record on a UNIQUE index or
PRIMARY KEY, the old record is deleted before the new record is
inserted. >>
So the result was predictible, sorry having sollicited the list.
JM
-----Original Message-----
From: Victoria Reznichenko [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 21, 2002 6:01 PM
To: [EMAIL PROTECTED]
Subject: re: RE : Duplicate key delete record with same key
BPF,
Thursday, November 21, 2002, 4:36:58 PM, you wrote:
BW> CREATE TABLE `reg_member` (
BW> `account` bigint(20) NOT NULL auto_increment,
BW> `userid` varchar(48) NOT NULL default 'Your name', `uilogin`
BW> tinyint(4) NOT NULL default '0', `id` varchar(48) NOT NULL default
BW> '', `password` varchar(10) NOT NULL default '',
BW> `joined` bigint(20) default NULL,
BW> `expired` bigint(20) default NULL,
BW> `status` varchar(20) NOT NULL default '',
BW> PRIMARY KEY (`account`),
BW> UNIQUE KEY `id` (`id`)
BW> ) TYPE=MyISAM
I tested it with 3.23.53 and it worked fine for me:
mysql> update `reg_member` set id=4 where id=2;
ERROR 1062: Duplicate entry '4' for key 2
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