If you wanted to use MyISAM tables and peform an initial select to determine whether you should insert, you could lock the table you would be selecting/insert from. 'LOCK TABLES table_name WRITE' Don't forget to unlock the table when you are done 'UNLOCK TABLES', otherwise you will likely have deadlocks.
~Wynne -----Original Message----- From: Wileynet [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 26, 2003 2:04 PM To: 'mysql users' Subject: Beginner question - Preventing Duplicate Entries Is there a sql statement that would not allow the same entry twice. Something like INSERT into myTable s WHERE s != Value(?). I don't know if that makes sense but I thought I would give it a shot. Basically I want to know if it is possible and if so can you point me to a webpage or give me an example if you can? Thanks in advance - Wiley -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
